mercedes w204 coolant temperature sensor location

Is there a fault code for the sensor? According to epc, the current part number for the coolant temperature sensor is as follows; A0009056102 (please contact local Mercedes dealer to check for supercessions in our systems). Replacement is not that difficult but you will be working with the coolant so take proper precautions; first. $710. Item location: Dortmund, Germany. Doesn't matter if you're in Sweden or Saudi Arabia. Will replacing the coolant temperature sensor fix this? Privacy Statement - If so, does it have to be done each time until the water runs clean? I am unable to find the engine block drain plug on a 2012 Mercedes Benz c250 4 cylinder engine. Find out what the symptoms are and how much it will cost to replace it. On my 2012 C300, the fan runs at full speed as soon as I start the car not even warmed up yet. https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement Check out the diagrams (Below). I noticed a whining noise from the auxiliary water pump when I turn on heater now. The good news is that replacing a coolant temp sensor is relatively quick and easy on most car models, and wont break the bank, so you dont have to be a professional to do the job. 7 Signs Of A Bad Intake Air Temp Sensor and Replacement Cost, Symptoms Of A Bad Airbag Sensor and Replacement Cost, 5 Symptoms Of A Bad Engine Control Unit and Replacement Cost, 5 Symptoms Of A Bad Engine Control Module and Replacement Cost, 15 Different Types of Sensors in a Car and Their Functions, 5 Symptoms Of A Bad Knock Sensor and Replacement Cost, 6 Signs Of A Bad Accelerator Pedal Sensor and Replacement Cost, 10 Symptoms Of A Bad MAP Sensor and Replacement Cost, 5 Symptoms Of A Bad Motor Mount and Replacement Cost, Electric Parking Brake Problems Causes & Fixes, Oil Coming Out Of Exhaust Causes & Fixes, 10 Symptoms Of A Bad Fuel Pump & Replacement Cost. I have a 2013 c220 cdi 2.1 is this the same location? - Nick at Pelican Parts. - Nick at Pelican Parts. Let the car cool so you don't have to work around a hot engine.You will need to remove the two air inlet ducts as well as the front engine cover to get access to the coolant temperature sensor on the front of the engine. Step 4 The coolant temperature sensor is located on the rear of the left cylinder head. Remove each duct by compressing them towards the engine and slipping them off the air inlet. Suspecting a bad or faulty sensor. They are different about 4 inches longer. What is the problem? You can mess up your car real bad as you have to remove the air intake which have rings that can fall in to the engine. - Nick at Pelican Parts. I'd have about 2 gallons on hand to fill it. An electronically controlled heater element is integrated into the engine coolant thermostat. Search the forum for oil temp sensor. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Munich area. i am replacing the thermostat and coolant. You must log in or register to reply here. Free shipping for many products! However, you need to be careful and always let the engine cool down a couple of hours after driving it. Reply Like The following 2 users liked this post by sickSVT: BLKROKT (04-24-2023), DarkMirror (04-23-2023) 04-24-2023, 10:07 AM # 3 2012_C63AMG Junior Member And I'm guessing if you are filling the hose that goes into the thermostat, it should be opened after doing the distilled water flush? - Nick at Pelican Parts. Wear protective gloves, protective clothing and eye protection. If the value is wrong, replace the sensor. - Nick at Pelican Parts. It is a good tutorial and guide! . The horizon is well defined and the outline of objects might be visible without artificial light. But it should be similar. My heater isn't blowing hot air where can I find the heater control valve. With your vehicle info handy, give The Pelican Parts parts specialists a call at 1-888-280-7799. In true AMG fashion, each engine is assembled by a single technician with that tech's name engraved on a plaque fastened to the engine. The average coolant temperature sensor replacement cost is between $50 and $250, depending on the car model and labor costs. getting little fluctuations on the oil gauge temperature sensor.already did the Thermostat last year. Location: Texas Posts: 246 Likes: 87 Received 322 Likes on 123 Posts E63 I believe there's two engine coolant sensors, one on the engine block and another one under the thermostat housing. Now I gotta change out that sensor too : Maybe gotta plug back in the crankshaft sensor before taking the coolant sensor out next time. RELATED: 7 Causes Why Car Temperature Gauge Stays on Cold. Best-selling products: Coolant temperature sending unit suitable for MERCEDES-BENZ C-Class Saloon (W204) vehicles Find many great new & used options and get the best deals for Coolant Air Ambient Temperature Sensor fit for Mercedes C/CLS/G/E 0075421318 at the best online prices at eBay! . where can I find lug nuts for c300 4matic. The amount of fuel getting injected into the engine is critical at the moment you start your car. - Nick at Pelican Parts, Thanks, Nick, what must I do, must I replace the Coolant Temperature Sensorme the owner go for this or the whole Thermostatmy mechanic advise this but its expensive, Always go with your mechanic's advice, as they have seen the vehicle and better understand what is going on. After change antifreeze the temperature fluctuate 75-95 C, w212, 170ps. I should have the part tomorrow hopefully. 12AM 3AM 6AM 9AM 12PM 3PM 6PM 9PM 12AM 41 41.5 42 42.5 43. Check your repair manual for the correct ohm value at a given temperature. Left when seated in vehicle. RELATED: Radiator Fan Is Not Working? Ive been looking everywhere for an answer but nothing shows up, Engine 271 The most common symptoms of a bad coolant temperature sensor include poor mileage, cooling fans not coming on, engine performance issues, an overheating engine, and a check engine light on your dashboard. Contact Us - If you feel that the engine performance is not what it has been before, it may be due to a faulty engine coolant temperature sensor. Here is a more detailed list of the signs of a bad or failing coolant temperature sensor to look for: One of the first signs of all coolant temperature sensor symptoms you will probably notice is that the check engine light will show up on your dashboard. Thanks for the Info. The sensor modifies a voltage signal from the Engine Control Module ( ECM ). Would a bad sensor cause random temperature spikes? Page may contain affiliate links. The only difference between the 2 is that your coolant runs 3 degrees Celsius hotter at the high end during normal operation. Loosen it to release some coolant. This exact question was just resolved less than a week ago. The cooling fan, which is behind the radiator grille, removes heat from the engines coolant. It should be mounted in the read of the cylinder head. if yes, can i back flush w a garden hose somehow? Temperature (F) 0 0.2 0.4 0.6 0.8 1. If you have two pins on the coolant temperature sensor, you can try measuring the ohm value between these two pins. The thread is probably even still on the first page if searching is too difficult. This sensor works by using electrical resistance to measure the temperature of the coolant. I highly, highly recommend you disconnect the battery, as the chance of harming yourself and the vehicle is greatly increased once everything is wet with coolant. - Nick at Pelican Parts, I have a 2014 E220 W212 I bought from garage 2 weeks ago.My coolant level light has come on and even after topping up the water keeps dropping below sensor level.As I fill it up I can see the water disappearing and dropping.i brought it to the garage and they said they pressure tested it and found 2 leaks by the fuel filter and water pump.I drove it home today and once again light is on.Ive gone from bmw to Mercedes and already kind of regretting it.What should I do next?im kind of getting the impression the garage arent being honest with me and Im hoping this isnt going to be the start of ongoing trouble.Surely a 4 year old Mercedes cant be that much trouble.Also is this a common problem with it?the garage has told me it is and I want to see if they are having me on.Thank you, I would pressure test the cooling system. Thanks, Yes, just to make space. Thanks for the feedback. - Nick at Pelican Parts, Is the procedures to replace this sensor on a 2011 C300 the same as this procedure? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. - Nick at Pelican Parts, How many gallons of antifreeze can the M272 W204 C300 V6 engine retain after being flushed? coolant sensor location 2010 w204 220cdi Thread starter davemb; Start date Oct 2, 2019; . - Nick at Pelican Parts, Oky Nick, I was responding from South Africa, sorry the Faulty COde was P0128, This is usually a coolant temp sensor that has failed or a stuck open thermostat. Ansaugschlauch Luftfilter Schlauch Luftversorgung fr Mercedes W204 S204 W212 . Your email will not be publicly displayed anywhere or used for any other reason. up to -45C .. 3.3 liters - Nick at Pelican Parts, How many litres ATF is required if I wish to change.Should I flush everything torque converter etc or change only what bleeds from pan and drain plug.Mercedes C200k2008 Vin No WDD2040416L011349, We don't have that model in the US, I don't have info for it. - Nick at Pelican Parts. Precipitation (in) 12AM 3AM 6AM 9AM 12PM 3PM 6PM 9PM . I believe my stating may have been related to a leaking EHA valve. If it is way off the range, check the wirings, and replace the sensor. With the ducts off remove the front engine cover. Do you have to drain the coolant to replace the temperature sensor? Replacement is not that difficult but you will be working with the coolant so take proper precautions; first make sure the coolant is below 40 degrees Celsius. The temperature reading at a high level means that coolant is not being released from the engine, so it is producing an uncontrolled amount of heat, thus leading to it overheating. I removed it out.compare that one to the sensor picture all online. By logging into your account, you agree to our, 2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast. Yes, should be about the same drained. The ECT sensor is a high-authority sensor whenever the engine is cold because ignition timing is tailored according to the engine coolant temperature. If the system will not hold pressure and there are no external leaks the head gasket may be faulty. The engine coolant temperature sensors job is to measure the coolant temperature for the engine control module. Ordinary outdoor activities are not possible at this time without extra illumination. Is this normal? Due to an incorrect engine temperature signal, the ECU may enrich the fuel mixture to a point where the combustion process becomes difficult. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. If you want, get a second opinion. I would recommend checking your owners manual in the "Capacities" section. If we get the chance to create the video, we will! Parking sensor Reverse/Parking aid/sensor. If I recall correctly, the 3 prong sensor is Engine Temperature and reflects on the Instrument Cluster. The Copper collar around the sensor is not completely inside the cylinder head. - Nick at Pelican Parts, Need to know my car has engine timing belt or timing chain Mercedes W204 C200kompressor 2008 VIN No.WDD2040416L011349 ENGINE No.27195031095337, Should I change and Timing or Tensioner related part.Its 94000kms done but no problem.And how to know it has Timing Belt or Chain.Its Mercedes W204 C200kompressor 2008 engine no.27195031095337, if not an issue, i would leave it alone. Simple DIY of coolant flush solve the problem? The W204's temperature can increase up to 90-95 degrees while running, which is considered completely normal. Possibly. - Nick at Pelican Parts. Thereafter, at least every second day or 100 one hundred KM the coolant level warning is displayed - 8 days later I have used 9.0 litres of coolant. In addition, I've used other URO parts with success too - some rubber trim pieces, and their Steering Coupler. The modified signal returns to the ECM as the engine coolant temperature input. Can you confirm you have the right part number? - Nick at Pelican Parts. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! - Nick at Pelican Parts. However, if you are fast with replacing the sensor, there is often no need to tap out the coolant, but this requires some skill. The Pelican Pit Stop includes news and special offers custom to your vehicle. This fan is electrically controlled and relies on the signal from the onboard computer. Copyright 2023 Mechanic Base. Mercedes-Benz C350 (2008-14) I am just a bit confused by that statement. Thank you for that sir but I have already replaced the accumulator, filters, pumps, injectors so this is my next go! Look behind the oil filter housing, locate the fuel rail, just below the fuel rail sensor is the coolant sensor. - Nick at Pelican Parts. Find many great new & used options and get the best deals for Sensor coolant temperature for VW Golf Polo Passat Audi 90 100 200 Coupe Seat at the best online prices at eBay! Thanks, JC, In the rear of the left side cylinder head. Is it 100% necessary to drain the block to flush the cooling system? Munich Weather Forecasts. (7 Causes & How to Fix). The sensor is located near the front of the engine on a coolant hose fitting. Excellent videos, guys. Where is it located and what does it look like. I do not have that information. Yes, in most car models you need to drain the coolant to replace the temp sensor. Squeeze the electrical connector and remove it from the sensor. PLEASE CONTACT US AND PROVIDE THE COMPLETE VIN NUMBER OF YOUR CAR. Replacing the coolant temperature sensor is a relatively easy job if you have a lot of patience. I would recommend checking the owners manual "Capacities" section for further guidance - Casey at Pelican Parts. A coolant temperature sensor costs $30 to $100, and the labor costs $20 to $150. the thermostat will not be open it reaches the correct temp. 2008 c350.. had small rad leak. INCLUDING / YEAR / MAKE / MODEL. my sensor has failed, no gauge and code read failed coolant temp sensor. - Nick at Pelican Parts. We appreciate it. Either Mercedes is dumb or tricky. If it seems fine, check the wirings and connectors between the coolant temperature sensor and the engine control module. - Nick at Pelican Parts, More like oddly experienced.- Nick at Pelican Parts, Nick what is DME and my car fan motor is DC motor or AC motor C200kompressor 2008 WDD2040416L011349, Mercedes C200kompressor 2008 VIN WDD2040416L011349 58500kms run Its A/C was weak since I bought in 2015 but few days back its temp rose n a/c started blowing hot air.Its fan moved and sometimes stopped but now fan doesn't start but when I removed and gave direct current DC 12 volts before module it ran full speed, With the engine hot, check the fan control circuit, if the signal does not change to control fan on, the DME may be missing the temp signal. A couple of safety precautions/instructions you may want to observe before beginning: Allow the cooling system to cool down to a coolant temperature of less than 80 degrees C. Open the cap of the cooling system slowly; turn a conventional coolant cap as far as the first detent and turn a screwed coolant cap approx. See attached. Afternoon I had an engine light illuminating, I put a diagnostic tool, it provides a faulty code, P0228, Coolant Temparature Sensor, I have bought. . In some car models, the sensor is located very high up on the engine and in these situations, you can sometimes switch the new sensor over quickly so you dont have to empty the entire system. The coolant temperature sensor itself is often quite cheap, and you can often find them for around $40 for a quality one. you may have double stacked orings. If doing yourself, you will have to drain the majority of it. - Nick at Pelican Parts, Should I replace automatic transmission fluid for my Mercedes W204 C200kompressor 2008 ;93500 kms done and if yes please specify grade n quantity.Can changing ATF lead to transmission problems as in few sites due to change in viscosity and contaminates going in new filter, Yes I would replace it. Using a " drive socket and extension and the correct sized socket (usually 19mm), loosen the sensor from the engine block and remove it entirely. We deliver enhanced functionality for your browsing experience by setting these cookies. down to -37C .. 2.8 liters so i bought the blue coolant. All Rights Reserved. Thanks! getting little fluctuations on the oil gauge temperature sensoralready did. OES Genuine Coolant/Antifreeze 1 Gallon Step-by-step instructions Locate the thermostat. I saw one of the sensor. It also provides input for idle air control (IAC) position, oxygen sensor closed-loop status, on/off times for the canister purge, and idle speed. - Nick at Pelican Parts. Due to a faulty ECT sensor, the fuel mixture will adjust. Or not seat correctly. I pushed it in as much as i could. Where is the coolant temperature sensor located on a 2013 c250? Here is a diagrams for both engines, (below) and a guide that will walk you through the steps of changing the coolant temperature sensor. Questions about how MBWorld.org worksnot for car questions. Check if the fluid level is correct. Thanks for the additional info and feedback. Unfortunately I don't know the answer, but just to say that many modern engines have a temp sensor that connects directly to the ECU, and a separate temp sender that connects to the engine temp gauge on the dash, so you need to buy the right unit. Or can you confirm the signal from the sensor to the DME, what temp is it displaying? Make sure to clean the sensor's insert area before you reinstall the temperature sensor. Compare . The sensor is actually held in place by a small clip that sits in a channel created by both the thermostat on one side and coolant pump on the other. after doing a part search, . We use essential cookies to make this site work, and optional cookies to enhance your experience. At the bottom of the radiator of your Mercedes-Benz, there should be a drain plug. Mercedes-Benz C350 (2008-14) If you are going to drain the coolant from the block you are going to be working around the starter motor, as the block drain plug is located right beside the starter. NEW VW BEETLE 9C COOLANT TEMPERATURE SENSOR 1J0959625 GENUINE (#284496094047) See all feedback. The Fora platform includes forum software by XenForo. when coolant pours, it will flood the sensor, possible seeping inside the sensor housing and it will be a serious issue as SAM commented December 4, 2020. Filled. It is a high-revving engine with four-valves-per-cylinder, variable valve timing, and a variable-length magnesium intake manifold. Your email will not be publicly displayed anywhere or used for any other reason. - Nick at Pelican Parts, I have a 2012 Mercedes c250 and I was just wondering how many gallons of coolant it takes? - Nick at Pelican Parts, Do you know where the coolant sensor is on a C class W204 c class 220 cdi 2007, It is located at the front left side of the engine. Try bleeding it again. The horizon should be clearly defined and the brightest stars should be visible under good atmospheric conditions (i.e. - Nick at Pelican Parts. It just helps to fill the engine. 2008 Mercedes-Benz C230 2.5 W204 ( 08-14) Avantgarde Sedan. Slide the clip off to the side and pull the sensor out from the engine. - Nick at Pelican Parts. Wind Gusts 6 mph. For Sale: 2014 C63 AMG 507 Edition (Toronto) ($56,000 CAD), Currently Active Users Viewing This Thread: 1, The following errors occurred with your submission, Location of Oil temp sensor on a 2011 W204 C63, MBWorld Featured Car of the Month Contest, E55, E63, E53, E43 AMGs (W210, W211, W212, W213), CLS63, CLS55, CLS53 AMG (C219, C218, C257), S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222), S63 AMG 4MATIC Coupe, S65 AMG Coupe (C217), Convert. NEVER pour coolant into beverage bottles, cups, etc.. Hey! The standard temperature for the car at rest position is 80-85 degrees. There are cheaper ones on the market, but I heavily recommend buying a quality one like Bosch to skip the headaches. We appreciate it. What is an Engine Coolant Temperature Sensor? I followed your information , I still cant find the sensor! Mercedes-Benz GLK350 (2010-14) Provide to get notified when a staff member responds to your question. Water Temp Temperature Joint Pipe Sensor Gauge Radiator Hose Adapter Clamps Aluminum (Color : 32MM) Cooling System Coolant Hose Sensor Adapter Coolant Hose Sensor Adapter 21 $3757 $16 A-Premium Engine Coolant Temperature Sensor Compatible with Infiniti FX35 FX50 G20 G35 QX56 Mercury Villager Nissan 300ZX 350Z 370Z Altima Frontier Murano Xterra Capacity of anticorrosion/antifreeze agent - Casey at Pelican Parts. Located at the front of engine in the coolant housing. The temperature gauge on your car's onboard dash indicates the temperature of the coolant in the radiator. If the computer detects any problem with the sensors circuit, it will illuminate the check engine light, indicating that the car needs an inspection. They can figure out what part or repair kit you need. Turn the tensioner all the way counter-clockwise and insert a retaining pin between the rotating part and the tensioner base. JavaScript is disabled. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The sensor itself is located below the air pump and between the thermostat and coolant pump housing. I will let you know! To diagnose the coolant temperature sensor, you need a repair manual for your car model to find what measurement values you should expect from the coolant temperature sensor. Remember to always make sure the coolant temperature is low when doing this kind of work!! It is often installed on a plastic hose on the coolants inlet. You will find it installed conveniently on a plastic hose on the coolant's inlet. Hello I have a 2008 Mercedes c300 4 matic no pzev just regular model,we recently went into a ditch smashed radiator fan and ac condenser I just purchased all new parts, my question is ,is there anything special I need to do when re adding coolant back into the reservoir?it has to be pretty much drained by now so how much coolant would I need to re add? Coolant temperature sensors are also known as engine coolant temperature sensors or ECT sensors. Thank you. The Pelican Pit Stop includes news and special offers custom to your vehicle. be careful, a lot of coolant will flow out. Answer. Wundermap. I do not have access to that specific information. Thanks for the Info. The engine coolant temperature sensor can have a hard impact on the air-fuel mixture. - Nick at Pelican Parts. (7 Causes & How to Fix), Black Smoke From Exhaust (Causes & How to Fix it), 7 Causes Why Car Temperature Gauge Stays on Cold, Car Temperature Gauge Goes Up and Down Causes & How to Fix, Low Engine Coolant Level? You are using an out of date browser. I am still able to wiggle the sensor around though. - Nick at Pelican Parts, What the purpose of removing MAF sensor and wire for the crankshaft-positioning sensor? Mercedes Benz 300 SEL,W 126,front bumper same bumper on all W 126 models in good con 300 also have other parts pls call ., 1311700537 I change termostat. do i drain the engine block the same way shown above on the GLK or can i just drain through the radiator? Replacement is not that difficult but you will be working with the coolant so take proper precautions; first make sure the coolant is below 40 degrees Celsius. Give The Pelican Parts parts specialists a call at 1-888-280-7799. My gauge reads 115 degrees also my iCarsoft i980 coolant temperature reading is high, but when i check the motor with a infrared heat reader I get near normal temperature readings from the thermostat housing, upper/lower radiator hoses and radiator?? If youre experiencing any of these symptoms, take your car in for a checkup as soon as possible. or heater core clogged now? - Nick at Pelican Parts. Next here, you have to check for the coolant temperature sensor and this can be checked with multi-meter. The Coolant Temperature Sensor's Function This device works on the principle of dependence of potential difference in temperature. No, possible the sensor is bottomed out. Thanks for the feedback. Capacity Bumper Tuck looks really sharp on black cars. In most cars, you have two separate temperature sensors for the fans, a dashboard gauge, and engine management. Step 8: Remove the coolant temperature sensor. We will review the data in question. Daily Weekly Monthly. https://mbworld.org/forums/c63-amg-wr-located.html, Do Not Sell or Share My Personal Information. However, most coolant temperature sensors take about 30 to 60 minutes to replace. Dang! A quick and dirty check is to test the Metal Temperature sensors with a Multimeter: Often times hot restart problems are because of a defective Accumulator. Locate the coolant temperature sensor in your vehicle by referring to the service manual. Open the hood of your C-Class. Can you please help to locate the coolant temperature sensor on 2012 s550. Pelican Parts specializes in performance and OEM-quality replacement parts for Porsche, BMW, Mercedes-Benz, MINI and other European marques. You have not went into the store to grab something and then come back out less then 10 minutes later? Do not fill the coolant hose completely, as it will make a mess when you reconnect it back to the radiator. - Nick at Pelican Parts, Mercedes W204 C200kompressor 2008,when I use left turn signal it starts ok and then starts blinking,instrument cluster also show check left signal and Importantly Parking Bulb on rear glows in stead of signal bulb Right one ok.Checked by reversing rear light plates but problem stays on left, Check if the sockets or harness is melted at the taillight. This will cause the engine tovibrate or shakewhen the car is at low speed and lead to other power losses and strange behaviors. Ok for anyone else with this issue you loose gauge and random high speed fan activation. However, the coolant temperature sensor is often located right on the cylinder head or engine block. Thank you for reporting this station. For a better experience, please enable JavaScript in your browser before proceeding. Thanks. Do this a few times, and you should be good to go. Wear gloves and be prepared to catch the coolant and dispose of it in accordance with the regulations in your area. How many are they ? - Nick at Pelican Parts. A 2011 Mercedes Benz C180 CGI last serviced end of October 2017. - Nick at Pelican Parts. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Thanks. Open vs. Limited Slip Differentials: What Is The Difference? Will the engine coolant temperature sensor keep a car from starting? What could be the problem? Give our parts specialists a call at 1-888-280-7799. Mercedes-Benz W204 Coolant Flush and Replacement. - Nick at Pelican Parts. where is it located in my 2012 C180 Mercedes Benz. We appreciate it. OK, i just discovered that the 272 engine block has a SECOND block drain on the driver's side directly across from the one on the passenger side by the starter. It makes it seem like its something easy you can do. There are 50C and 70C metal temperature sensors under the Air Cleaner. Hi everyone, I had searched and read and have tried to understand so please dont yell at me. Hi: Is this sensor location the same for a S550 2010? An actual video of this would be awesome. This will cause the fuel economy to drop and decrease the engines performance. Radiator Fan Is Not Working? Symptoms Of A Bad Coolant Temperature Sensor. Do Not Sell or Share My Personal Information -. What keeps the thermostat open to let water into the block? Some cars use the engine coolant temperature sensor to control the electric cooling fans. The back near the firewall is very tight about 1 inch and there is nothing next to the thermostat in the front. Once everything is cool slowly open the reservoir cap to release the pressure. My oil temp level is not showing on the cluster i have replaced coolant temp sensor but still no change.

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