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just changed the coolant temp sensor on a quick ...

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· Mine suffered from mpg down in the low 40''s and I changed the maf which made no difference to economy but did to performance. Then I tried the coolant temp sensor which made no difference at all, then eventually changed the thermostat which sorted the economy issue. I now get 100 miles more to a tank of diesel with mpg''s up to 4850mpg.

Coolant Temperature Sensor Test AxleAddict

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Coolant Temperature Sensor Test. Now that you''ve located the ECT sensor on your vehicle, you''re ready to troubleshoot it. 1. Unplug the sensor electrical connector. 2. Get the engine surface temperature using an infrared thermometer or suitable cooking thermometer. Take the engine temperature on a location near the coolant temperature sensor.

Faulty coolant temp sensor? | TDIClub Forums

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· Depending on the Mileage, welcome to the world of VW. PS. OP was regarding throwing a CEL , the ECU won''t know that it is being lied to by the sensor. It just will assume a certain temperature, if the FUel Sensor, Radiator Sensor, say something different than the ECT Sensor (Dual Sensor, one output for dash, other output for ECU).

Fuel temperature affects mpg? EFILive

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· Don''t know if this should go in the economy section or not. Just wondering because I''ve googled and it appears that cold fuel burns less efficiently? I know colder air has more oxygen in it. I haven''t been on in awhile, but I didn''t see any winter mpg gripes on the first page, so I thought it might be safe to post this. My AFR''s are suprisingly close to where they need to be with the POS black ...

Your Cars Cooling System does impact your Gas Mileage ...

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· Your Cars Cooling System does impact your Gas Mileage Just about everyone has heard the old cliché “The best offense is a good defense.” With that thought in mind, this may be the best possible advice for combating the high gas prices the nation is currently faced with.

The engine coolant temperature Sensors – HydrogenFuel

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The coolant sensor detects the change in temperature and signals the Powertrain Control Module (PCM) so it can tell if the engine is cold, warming up, at normal operating temperature or overheating. The coolant sensor is extremely important because the sensor’s input to the PCM affects the operating strategy of the entire engine management system.

Engine Coolant Temperature (ECT) Sensor Function ...

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· Table of Contents [ show] 1 What is a coolant temperature sensor. 2 Signs of a bad or failing coolant temperature sensor. 1. Poor mileage. 2. The check engine light is going to activate. 3. The smoke exhaust pipe is going to emit black smoke.

What happens if my coolant sensor is bad?

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One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. This will reduce fuel economy, and may hinder engine performance.. In respect to this, can you drive with a bad coolant sensor?

coolant temperature sensor operation Chevy Message Forum ...

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· 033010 07:19 AM Post 1889452 i was wondering exactly how the coolant temperature sensor affects the air/fuel mixture. i came up with an idea to install a potentiometer inside my truck, and wire it in parallel with the CTS. then while driving, i could lean out the mixture to get better fuel economy, of course taking note on engine performance so not to cause loss …

low coolant temp and poor mileage | forum

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· Yesterday I ran out of gas. I have only had my 07 1098 for three weeks and have ridden only about 200 miles due to the weather and so far I have not had a chance to ride in temps above 60 F/ C. I have never seen the temperature gauge go above 150 F/65C. Yesterday it …

(ECT) Engine Coolant Temperature Sensor What Can Go Wrong

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· Poor Fuel Economy. One of the first symptoms, associated with a problem with the (ECT) sensor is poor fuel economy. A failed (ECT) sensor can send a false signal to the computer; and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail; and send a permanently cold signal to the computer.

4 Signs Your Coolant Temperature Sensor is Faulty

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· Fuel Consumption Increases. One of the very first indications that you might have a faulty coolant temperature sensor is when you notice a drop to your fuel economy. The reason this happens is as follows: The faulty sensor might send a wrong signal to the computer, leading to a miscalculation in the engine timing and fuel calculation.

How Can You Tell If Your Engine Coolant Temperature Sensor ...

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· If you can tell that your engine coolant temperature sensor is bad, then you will notice your engine overheating. The onboard computer also functions by opening and shutting down the cooling fan depending on the temperature reading and the controls. This computer determines the exhaust gas recirculation and the fuel combustion process.

intake air temp / gas mileage? [Archive] ...

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· for best gas mileage you should leave it alone and the pcm will adjust itself based on coolant and air temps and the oxygen sensor reading. as long as it''s in closed loop and you don''t have your foot on the floor. use cruise control as much as possible. keep your tires inflated properly. keep the car clean and empty of stuff you don''t need.

How Engine Coolant Temperature Sensors Influence The ...

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· The engine coolant temperature (ECT) ­sensor provides a good illustration of how many onboard diagnostic strategies have changed. An outofrange ECT ­sensor can affect the PCM’s fuel and spark mapping, variable camshaft timing, transmission, radiator cooling fan and evaporative emissions functions, so it’s important to develop an ...

4 Symptoms of a bad Coolant Temperature Sensor in Your Car ...

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1) A dip in fuel economy. When the coolant temperature sensor malfunctions, the first sign isn’t necessarily a dramatic one. You may notice instead that a tank of gas doesn’t go quite as far as it used to. This is because the temperature of the engine determines how much gas is injected at one time. When the coolant temperature sensor isn ...

8 Symptoms Of A Bad Coolant Temp Sensor (Replacement Cost)

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· The average coolant temperature sensor replacement cost is between 50 and 250, depending on the car model and labor costs. A coolant temperature sensor costs 30 to 100, and the labor costs 20 to 150. The coolant temperature sensor itself is often quite cheap and you can often find them around 40 for a quality one.

Coolant Temp Sensor (2?) Gas Mileage | Toyota Nation Forum

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· I want to go ahead and replace the Coolant Temp Sensor on my 91 v6 3vz due to poor gas mileage. There are 3 sensors....two with two pins, and one with one pin. I''m pretty sure the sensor with one pin goes to the temp gauge. The other two, one being black and had a larger diameter thread, and the other is grey. Resistance measured on the black = 80.

Symptoms of a Bad or Failing Coolant Temperature Switch ...

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· 1. Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations.

Tuning For Mileage FuelSaverMPG

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Let’s break the tuning process down into bitesized steps. A logical format makes the tuning process more like science and less like a mystical black art. 1 Verify the vehicle is in good working condition. 2 Install your mileage device (s) 3 Lower your leanout limits. 4 Adjust your air/fuel mixture.

How does fuel temperature affect engine performance? Quora

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Answer (1 of 2): During the early ages of the Automotive Industry, controlling Fuel Temperature was a big task for the Auto makers as it had a big impact on the performance of the vehicle. The temperature of the fuel is inversely proportional to the density of the same. This means that The hotte...

Brand: Low coolant temp may be hurting Fit''s gas mileage ...

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· The coolant temperature was 172 degrees when the car was warmed up. We have twice had it checked out by our mechanic and he finds no codes on the scanner. Its EPA fuel economy is estimated at 35 ...

Coolant temp sensor and bad fuel mileage | TDIClub Forums

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· Can a bad coolant temp sensor be responsible for a reduced gas mileage? I have a Jetta. Lately noticed that my glow plugs don''t stay on as long as I expect them to. Replaced the blue sensor with another blue one from impex with no effect. It also looks that my mileage is dropping I used to get at least 420 miles per tank.

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