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An engine revving to high RPMs could be a symptom of many conditions. The potential cause?æalso depends on whether this happens?æwhile idling or while driving.
The idle arm may be off set. The idling is set extremely high according to the RPM's stated and need to be lowered.
set the idle down on the carb
It is over charged and builds to much pressure on the high side when the engine is at a higher RPM. Need to remove some feon.
My engine is idling too high. How do I adjust the idle speed?
If the engine is revving high and low while it is idling, then that can be the idle air valve (what was told to me by a professional). I don't know if it can fix itself because I had mine hibernating for about a year and it stopped.
Well, a transmission itself does not idle...the engine does. A vacuum leak in the engine will cause faster idling or slower idling depending on where the leak is. Newer transmissions do not use vacuum at all for their operation. Older vehicles used vacuum to help with the shifting of gears-automatic transmissions.
Chances are, particularly if this is an automatic transmission, you are low on tranny fluid. To check this, the engine needs to be at normal operating temperature and idling. Checking tranny fluid when the engine is cold and not idling will give a false reading, indicating that it is full ...
Its cold, idling, and old.3b7From my understanding with my own 89 Honda civic LX sedan, is that there is a thermometer that sets idle speed at low and high temperatures, with age, ours have degraded, and the low temp. has been borked. It doesn't hurt your car any, I've checked with a few sources, it just means while your engine is warming up in winter, your car will do that little rev thing every few seconds while idling.
Incorrect timing can cause several problems. One of which is high idling. 5000 rpm sounds high though, there may be other problems as well.
2004 chevy cavalier is idling to high
Most cars will idle high until the engine warms up. If your car continuosly runs high have the fuel system checked.