If the fuel mixture becomes excessively rich to the point where the fuel cannot be adequately burned in the combustion chamber, it will burn up in the exhaust pipes and cause black smoke. The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engineâs coolant. The cooling fans in the front of the vehicle move air through the radiator to cool off hot coolant being circulated out of the engine. Ford Taurus - Vehicle Engine Electrical - Los Angeles, California. ((2005 Chevy Impala 3.4Liter 6 cylinder)) Sometimes during driving also the heat gauge works normally but most of the time it remains below C. Like every other component, the ECT sensor can also get damaged, resulting in a number of engine-related problems. Check that the temperature value of the CTS is around 80-90c when the engine is hot. This will cause the fuel economy to drop and decrease the engine’s performance. LEARN MORE. Location of the Coolant Temperature Sensor, How to Ensure a Long Life-Span of Engine Coolant Temperature Sensor, Coolant Temperature Sensor Replacement Cost, Head Gasket Symptoms, Function & Replacement Cost, Oil in Coolant Reservoir - Causes, Testing & Solutions, EGR Temperature Sensor Symptoms, Function & Replacement Cost, Intake Air Temperature Sensor (IAT) Symptoms &…. I am in the UK & have a 2015 Seat Leon 1.4tsi 150bhp car. The Intake boot is known to crack around the Intake Temp sensor. Would definitely recommend. Clean the hole where the sensor is located in order to remove any interference. Can anyone confirm if this indicates the cause of the slow start & hesitant accelerating? As well. Locate the coolant temperature sensor in your vehicle by referring to the service manual. Turned car off code is not there anymore but p0300 popped up again. If the coolant temperature sensor goes bad … I really need help in getting this problem solved what do you think it could be and what should be done? Otherwise, you may also try to go for a do it yourself replacement as it is relatively easy and simple, as described in our guide. And inside the ribs of the boot. YourMechanic All rights reserved. This will cause the engine to vibrate or shake when the car is at low speed and lead to other power losses and strange behaviours. For this reason, if you suspect that your coolant temperature sensor is having an issue, have the vehicle inspected by a professional technician from YourMechanic. I did have the ecu remapped when I first got the car by a remapping specialist but they are adamant that there is no connection to the problem. Bad coolant temp sensor symptoms . But now I am wondering if that is the cause. to check the Ohm between the pins. Also, you can't beat that its backed by a 12,000 mile warranty, better than most service shops that cost A LOT more. The most popular service booked by readers of this article is Vehicle Engine Electrical Inspection. For some vehicles the computer will set off a Check Engine Light if it detects a problem with the sensorâs signal or circuit. Autoblog forma parte de Verizon Media. Hence, it is advised to have your car inspected right away to avoid any serious problems. Fast, free online quotes for your car repair. Find the difference between the maximum reading while the engine was hot and the minimum reading while the engine was cold. If the engine is getting hot then this will happen. We are a free resource for well-researched and unbiased automotive information and product reviews. I have a 2007 Dodge Charger and the cooling fans wont turn on. Some vehicles may have more than one temperature sensor, as sometimes different sensors are used to send the signals to the dashboard and the control unit of your engine system. Put the drain plug back into its original place. The readings produced from the coolant temperature sensor are transmitted to the engine control unit, where they are utilized as data for regulating and maintaining the proper ignition time and the optimal fuel injection through the computerized approach. Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics. How Does the Coolant Temperature Sensor Work? In the case of two sensors, we usually consider the one sending signals to the control unit as the coolant temperature sensor. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. A bad coolant temp sensor may be? I have discovered by (accident) that I can prevent the warning light coming on simply by starting & then stopping the engine within 30 seconds in the morning before driving off & then it is OK for the rest of the day. Check for vacuum leaks. I think I am getting poor mileage. Because temperature plays such a vital role in engine performance calculations, any problem with the coolant temperature sensor can quickly translate into an engine performance issues. Also suggested services to be mindful of in the near future. One of the first symptoms you will notice is that the check engine light will activate. It can help the control unit in your engine system to detect when the coolant is not functioning well and your vehicle is overheating. The average labor cost involved in the replacement of the coolant temperature sensor is anywhere between $40 and $140. The coolant temperature sensor is one of the most important engine management sensors, as its reading plays a key role in calculations which affect engine performance. Ford E-350 Super Duty - Vehicle Engine Electrical - Placentia, California. The coolant system of the car does not need constant refilling. The coolant temperature sensor is less expensive compared to many other sensors installed in your vehicle. When the AC is unplugged the fans come on but they just constantly runs. Besides burning it to the ground lol. Kia Sorento - Alternator - Charlotte, North Carolina, Acura TL - Alternator - Charlotte, North Carolina. Add the coolant in the coolant reservoir system of your vehicle. The principle working of this sensor involves the use of an electrical resistance which measures the temperature of the coolant. The computer will also scale back engine performance settings if it detects that the engine temperature is too high, in order to protect the engine from possible damage due to overheating. Scanned and a new code popped up p0306, misfire cylinder #6. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm. When your check engine light is on, the best way is to start with reading the trouble code memory. It is important to note that the price can be higher than this in the case of luxury vehicles. I am Thomas I’m driving BMW-3-Series-E90 so one mrng I was driving to work I noticed the red temperature warning sign and fan was blowing very high so I stopped and checked in the engine the wasn’t actually hot. You can do it at home if you have an OBD2 scanner. Hello I’m Magnus, the owner and the writer of this website. Repairs covered by 12-month/12,000-mile warranty. No black smoke. Please see our, Dodge Ram 2500 - Vehicle Engine Electrical - Perris, California. We are owned and operated by, Engine Coolant Temperature Sensor Symptoms & Replacement Cost, Signs of a Failed Engine Coolant Temperature Sensor. A lot of people make the mistake of filling the radiator with regular tap water. With inadequate coolant in the reservoir, the ECT sensor might give a false reading to the ECU. The tap water has elements of rust and other minerals in it which can be harmful to the engine in the long run, especially if the water begins to boil and evaporate inside the radiator. This fan is electrically controlled and relies on the signal from the onboard computer. Only check it when it is cold. Make sure that your vehicle is parked on a straight flat, level surface. Here are a few tips which will help to keep your engine in good condition and avoid problems associated with the ECT. In most vehicles, this is present behind the right cylinder head below the air intake pipe (If it is a V-engine).
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