Fuel Filters

If the engine idles at 1200 and your gas mileage has dropped to 10-15 MPG even after a tune up and having the fuel injectors cleaned could it be a fuel filter or throttle position sensor or both?


Top Answer
User Avatar
Wiki User
2015-07-15 19:19:52
2015-07-15 19:19:52

Hey Bill==It depends on what kind of car you have. The fast idle can eat up gas mileage. It is possible the idle speed control is the culprit or maybe the throtle is hanging as it does in some cars. GoodluckJoe

It could be a defective thermostat, the engine control computer senses a cold engine and sets a fast idle and richer mixture.

There could also be a vacuum leak, which would cause a high idle and poor gas milage.

Often a dirty MAF (mass air flow) sensor can cause this type of symptom. Be careful, they are easy to break and expensive to replace, but thy can be cleaned. vbdenny

You say Tune up was done, I would think the fuel filter was replaced if you did that. There are many reasons for a high idle, including most of the above ones mentioned.


Related Questions

User Avatar

it is the difference of the potential energy when the body is on the table and from the position where it is dropped.

User Avatar

The most common position is bending over in front of the broker after you have dropped you pants.

User Avatar

A dropped racquetball will not return to its original position because it is a requirement in the USRA Guidelines that if the racquetball is dropped from 100 inches at a temperature of 70-74 degrees Fahrenheit it must only bounce 68-72 inches. All official racquetballs are made to do this, which is why it won't bounce back to where it was at first.

User Avatar

Highly recommend you let a trained gunsmith do this. It should be detail stripped and cleaned.

User Avatar

they are swept every morning and cleaned and the litter is designed to be dropped in gutters to be swept out when cleaning in mornings

Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.