Question about 1992 Saturn SL1

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I have a 92 Saturn SL-1 and it runs fairly smoothly except the auto. transmission shifts hard at times. However, the gas mileage has dropped to probably 15 mi per gallon. I have replaced the fuel filter, air filter, and used a quality fuel system cleaner with some improvement. Gas mileage is still horrible. Could there be a fuel injector or fuel pump problem?

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Try changing fluid and filter. If this does not correct it, then test the vacuum pressure in the vacuum controlled actuator and the circuit on the tranny. If it turns out ok, then tranny servo or other internal part may be faulty

Posted on Sep 12, 2009

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1 Answer

My standard 99 Saturn sl 1 acts like its running out of gas when I shift up from 1st to 2nd is it fuel related ? Transmission related ?


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This could be a dirty filter. i would start there and replace fluids with lucas tranny fluid. Does it change when the car warms up i wonder ?

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sounds like either your transmission is having problems with the valves...might want to have that looked at before your transmission dies completely......also have them check vacuum lines as i believe that car uses vacuum pressure to shift.

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1 Answer

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I could not find any diagrams.......but it may be the park lock cable.. or you could have something jammed underneath the shifter.... a penny....or some other misplaced object that can slip underneath the cracks and cause it to not go into park all the way....the center console is fairly simple to remove a few bolts and I think a couple pop rivets.... a Haynes Manual on all the s series Saturns is available at your local auto parts store (advanced auto, auto zone, Pepboys) it'll run you like 20 bucks but will definately prove helpful to you ... Im looking at mine right now and it shows you how to completely tear it down and rebuild it.

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