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View Full Version : High rev problem - its back, but not as bad!



M4DDOG
26-07-2004, 02:18 PM
Ok from my other post you know that in OD on and PWR off, it would rev up to 4000 then struggle, and with OD off and PWR on, it would rev to 3300 and struggle, well, after replacing the sparkys, immediatly fixed the problem. However, this morning, i discovered that it is not 100% fixed.
When the engine is reasonably cold, it will rev fine with pwr on, but when its hot it will struggle, it only struggle just after 4500 and doesn't struggle AS MUCH as it did before the sparkys, it revs slow, takes about 10 seconds to reach 5000 from 4500, dont know how bad this is for the engine. I've been just gear shifting (uising pedal in auto) at 4500 in pwr mode which i can live with. With PWR off it revs perfect, not a problem, hot ro cold, just when the engines warmed up it has this little problem, so what i'm thinking, is it possible the spark plug leads might need replacing too? or would having only half a thing of oil cause this also? (i'm buying some this week when i get paid).

ALSO,
Today my car's revs have dropped HEAPS, with my funny idle problem i had to get the mechanic to lower my revs, cuz they were sitting around 2500, so he made P/N sit at 1500 and D sit at about 800, now today D is sitting right on 500 and it actually stalled a couple of times, and idles REALLY ROUGH and the engine is kinda rattling abit, all of which dissappears when the revs increase. P/N idle is sitting around 600-800, which doesn't idle rough at all and theres no rattle. also it doesn't constantly rev anymore which is really wierd.(btw tek i plugged that plug back in later that night).

heathyoung
26-07-2004, 02:59 PM
Sounds like air leaks in the induction path, also have a look at your AIC - it could be clogged up with crankcase crap...

Cheers
Heath Young

benau
26-07-2004, 03:10 PM
check your spark plug leads for high resistance (over 10000K ohms) and the distributor cap as well, an air leak after the air flow meter like a loose manifold or duct and crap in the throttle body are both good suggestions for a variable idle problem, i would make sure the spark is right b4 i went chasing fuel problems