Rpm's go down slow on my 240sx twin cam ka?

[sidedrifts13]

I have a 91 240sx with a stock twin cam, the problem is that when i rev the motor the rpm's come down slow what can be the problem? also idles high but not all the time almost at 2 rpm then comes down to its normal idle but most of the time it iddles high? thanks for your help.

[jorge1190]

Im pretty sure that this is due to the KA having a really heavy flywheel. My KA does it too

[sidedrifts13]

It does it on and off comes and goes but idle is high ima check the timing and the tps to see whats up also sometimes not all the time car dies when coming to a stop anybody have an idea what can it be? could it be bad ground?
Im pretty sure that this is due to the KA having a really heavy flywheel. My KA does it too

[payne219]

Vacuum leak most likely If your car is falling out at stops and has high idle. Check your hoses in and around the intake manifold brake booster ect... see if you can find a leak. that might help

[sidedrifts13]

for sure ill definately check the vacumm lines thanksVacuum leak most likely If your car is falling out at stops and has high idle. Check your hoses in and around the intake manifold brake booster ect... see if you can find a leak. that might help

[evmal613]

i say vacumm. I had the same issue with my car

[D-CYPHERED]

damn you didnt tell me all this about the car