1988 5.8 acceleration
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Joined: Feb 2000
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1988 5.8 acceleration
I'm having a problem with my 88 5.8 with C-6 transmission. I've noticed in the last couple of months that I have uneven acceleration at normal or lower acceleration speeds. For instance when I go from a stop and accelerate gradually to about 40 you can feel the speed increase then slow down then increase etc. at constant throttle pressure.(Holding foot pedal in exact place) If you go WOT no problem. I've also noticed that with the cruise control set that the same thing will happen. I live on an old lake bed so the roads are almost perfectly flat. I set the cruise control on 50 and the pickup will slow to about 46 then speed up to 50 then slow to 46 over and over again. It doesn't stop. It doesn't happen everytime I drive it but often enough to drive me crazy. Any help would be appreciated.
One other question. My gas gauge stays stuck on full tank until it reaches about 1/8 then drops. Just before it drops it will swing wildly back and forth for a few miles. Just like the fuel was sloshing around. Does anyone have any ideas on this problem?
Thanks,
Ron
One other question. My gas gauge stays stuck on full tank until it reaches about 1/8 then drops. Just before it drops it will swing wildly back and forth for a few miles. Just like the fuel was sloshing around. Does anyone have any ideas on this problem?
Thanks,
Ron
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Joined: Aug 2003
Posts: 7
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From: barrington, il
I had a similair prob with my 87 5.8. The acc. was uneven and hesitent. I bought a rebuild kit for the carb and a fuel filter. Everything runs great now, not to mention more power and better mileage. I have the same guage problem though...I can't figure that one out.
