1985-1998 [Subscribe to Daily Digest] |
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I have a 1989 Saab 9000 that I bought a year ago. The car runs beautifully, handles well, and is great to drive. But I have this intermittent problem that keeps reoccurring, although fairly rarely.
The car occasionally seems to lose its will to move forward, and the engine falters slightly, with little power coming on-line. Pressing on the accelerator doesn't do much more than support it morally (it feels like it just won't provide power), although the engine will rev if put into neutral. It doesn't make any loud noises, just seems to falter slightly. And the engine sometimes seems to be re-engaging, with short clunky chugs forward. Then the whole problem goes away (after only a couple of minutes of this), and usually doesn't resurface until a tank or two of gas later.
There doesn't seem to be much of a pattern, except that it doesn't happen when the car is cold, it only happens at highway speed (not as bad as it sounds, since I usually have time to get out of everyone else's way), and generally the gas tank is more full than not. I've only had it a year, but I don't remember this happening at all when the weather was cold. This usually happens on long-ish trips as well, although that may just be because I use the car more for long trips than anything else.
The little beast gets serviced regularly, including a proper tune-up, and the only thing I've changed out to attempt to resolve the problem was the fuel filter (my mechanic - a Saab guy himself - thought perhaps that was causing the problem).
Any ideas as to what might be causing this, and more importantly, how to resolve it?
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