Crappy MPG s14

[EDT007]

1) Disconnect your battery for 20 mins and reconnect. This is usually enough time for the ECU to reset.

2) Check the FSM to see if there's a way to check the fuel pump assembly specifically for the fuel guage.

3) As previously stated make sure you don't have any apparent fuel leaks. Also check for vacuum leaks. You can try spraying carb cleaner around the intake manifold while the car is running to see if the idle changes. If the mileage is unknown on the fuel filter change it to be sure.

4) Last but not least. Could be bad gas like someone said or combination of things. Try running it down and fill-up somewhere else.

Goodluck!! Let us know how it works out.

[R_G]

Originally Posted by enkei2k

are you sure your needle's working properly? just a thought...

You know that never crossed my mind. I did not know s14's had buggy electrical. I have noticed the needle goes down with any little movement . How much is a sending unit? my s14 was sitting for 2 years untill i purchased it.

Originally Posted by EDT007

1) Disconnect your battery for 20 mins and reconnect. This is usually enough time for the ECU to reset.

Thanks will do this.

2) Check the FSM to see if there's a way to check the fuel pump assembly specifically for the fuel gauge.

will do this also.

3) As previously stated make sure you don't have any apparent fuel leaks. Also check for vacuum leaks. You can try spraying carb cleaner around the intake manifold while the car is running to see if the idle changes. If the mileage is unknown on the fuel filter change it to be sure.

4) Last but not least. Could be bad gas like someone said or combination of things. Try running it down and fill-up somewhere else.

Goodluck!! Let us know how it works out.

thanks i will let u guys now.

[stinky_180]

Originally Posted by R_G

my s14 was sitting for 2 years untill i purchased it.

this says a lot. full complete tune-up. if there was some gas in the tank for 2 years, i would highly recommend removing the tank and getting it cleaned. or, run the car until theres almost no gas. before refilling, change the fuel filter (might as well get z32 while your at it). use a bottle of fuel injector cleaner, and pump a FULL tank of chevron w/techron. try cleaning the MAF and throttle body with carb cleaner.

[R_G]

Originally Posted by stinky_180

this says a lot. full complete tune-up. if there was some gas in the tank for 2 years, i would highly recommend removing the tank and getting it cleaned. or, run the car until theres almost no gas. before refilling, change the fuel filter (might as well get z32 while your at it). use a bottle of fuel injector cleaner, and pump a FULL tank of chevron w/techron. try cleaning the MAF and throttle body with carb cleaner.

I clean the maf with carb cleaner now it does not start.... ahh . I should of used maff cleaner. Shitty. I replaced the fuel filter. Before i clean the TB and Maff i checked the gauge and it does move easily up and down when i drive. Looking for a maff now.