Why does the ECM think the coolant is too cold?
Either the coolant isn’t reaching full operating temp due to a faulty thermostat (unlikely in a 2013) or the engine coolant temp sensor is faulty and makes the ecm think the coolant is too cold, when it actually isn’t too cold. If the ecm thinks the coolant is colder than it is, it will inject more gas than is needed.
Why did my car get 33MPG on the fuel consumption test?
The only reason I can find that they got 33mpgs during their fuel consumption test is that they start the car warm from a heated garage, and then parked in a garage over night – I never had heated parking in two years in Minnesota so there’s something new that is going wrong since the 30k maintenance that is affected by cold vs warm start.
What was my MPG when I got my car back?
They additionally replaced my engine air filter which they said was dirty (hadn’t been replaced in 2 years) Ever since I got the car back, January 2nd, 2015, my MPG on the digital readout went form hovering between 27-29 down to 21-23, sometimes 18 and the highest is the upper 24’s.
What should my mpg be in cold weather?
Ever since I got the car back, January 2nd, 2015, my MPG on the digital readout went form hovering between 27-29 down to 21-23, sometimes 18 and the highest is the upper 24’s. I brought it back into have them check it 3 times now. I live in Minnesota, every time they tell me, “it’s the cold weather, you cant expect better milage in cold weather”
How to reset the ECM on a light truck?
Light trucks & cars can be reset legally by filing paperwork with the DMV. There is always an in Craigslist for having this service performed on cars & light trucks. I called the guy doing it and he said he don’t have the equipment to do big trucks. All the trucks I’ve ever owned have had different ECM & speedometer mileage readings.
Can you tell me why the odometer and ECM numbers don?
I’ve never seen any truck where ECM miles perfectly matched odometer miles. Going by the GPS my odometer, before it quit working this past April, was spot on 100 miles driven when the GPS said I had 100 miles to go. For whatever reason the ECM would go 102 miles for every 100 GPS or odometer miles.
What causes a car to drop in gas mileage?
It can also be an indicator of a much more serious issue that if left un-repaired, can develop into an expensive repair. There are dozens of problems that can lead to a drop in gas mileage, some of them are serious and some can be easily corrected. Here are some of the more common issues that can affect the fuel efficiency of most cars.
Either the coolant isn’t reaching full operating temp due to a faulty thermostat (unlikely in a 2013) or the engine coolant temp sensor is faulty and makes the ecm think the coolant is too cold, when it actually isn’t too cold. If the ecm thinks the coolant is colder than it is, it will inject more gas than is needed.