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my 1988 4ws Honda prelude idles low at 600 rpm
in park my 94 honda prelude 2.3 idles at 4000 rpm what can i do to slow down the idle ? <><><><> Idle speed is controlled by the computer, and is not adjustable. You have a problem with the computer or a sensor. Take it to a shop.
my 91 Honda prelude 4ws si with 2.1 engine had high idle in park. then my timing belt went put a new belt on hasn't done it yet!!! I do not fix them, I bring it to the dealer and let them fix it.
In hot weather my Honda Accord 2000 starts but idles rough and dies.
If the plugs, plug wires, are good then suspect a vacuum leak somewhere.
figured it out, heater coil blew out bypassed and yea don't need heater on Guam neyways
Perhaps throttle plate is stuck open - try to free with a screwdriver
replace the thing its faulty dont try do fix something you dont understand
My Honda, in good running condition, idles at 700 RPM This is what it idled when it was new. For the 1989 Honda your idle speed should be between 750-1000 RPM and if you have any questions look under your hood and it will tell you right there.
If the idle is erratic on a 1993 Honda Civic the IACV will need to be clean or replaced. The IACV controls the idle on the car and when it fails the car will not be able to maintain an idle.
A 1998 Honda Civic shakes when it idles usually due to worn engine mounts. Open the hood and check the engine mounts. See if they are either cracked or brittle. Since the mounts can not absorb the vibrations it will be felt in the cabin.
You can adjust the idle speed on your 1992 Honda 250, motorcycle with the fuel pump adjustment screw. Turning the adjustment screw will adjust the flow of fuel.