Saturn Forum - Saturn Enthusiasts Forums - 99 SL2 gas mileage dropping

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imaukfan

Jun 4, 2008 05:40 PM

I have noticed my car is not doing very good on gas, it went from 28 mpg in town to 20.&nbsp\\; With gas prices like they are, this is not a good thing!&nbsp\\; It has acted up a few times when I went to start it, a couple of times it sputtered and died, and a few times it has wanted to idle high.&nbsp\\;&nbsp\\; Any help is appreciated!!&nbsp\\; My car is a 99 SL2 with 103,000 miles on it.

TheEngineer

Jun 5, 2008 12:52 PM

just start with the normal tune up parts such as the plugs, wires, PCV valve, air filter, fuel filter

Barmitch

Jun 9, 2008 12:02 AM

Check the throttle postion sensor if idling high. Can buy it from Rock auto on line. Fixed my problems. Check air filter also. There is also a valve on by the TPS that can stuck also, but mostly can be cleaned. Called the idle something?? in the book.

kloppk

Jun 10, 2008 06:34 AM

Quote:

Originally Posted by Barmitch

Called the idle something?? in the book.

IAC... Idle Air Controller

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