why do my rpms hang at 3k on my prelude ~ then drop normal to idle
Thread Starter
Honda-Tech Member
Joined: Dec 2005
Posts: 467
Likes: 0
From: Nor-Cal, CA, USA
why do my rpms hang at 3k on my prelude ~ then drop normal to idle
95 H22a civic
I just put the Cylinder head back on after having the seats ground to spec.
example : I press the throttle quickly raising the rpms to 3500 then it slowly comes down from 3500 to umm 2000 then drops normally to idle. I checked the throttle cable and pulley and its all good. So?
I just put the Cylinder head back on after having the seats ground to spec.
example : I press the throttle quickly raising the rpms to 3500 then it slowly comes down from 3500 to umm 2000 then drops normally to idle. I checked the throttle cable and pulley and its all good. So?
Last edited by butter99; Feb 8, 2009 at 04:19 PM.
Thread Starter
Honda-Tech Member
Joined: Dec 2005
Posts: 467
Likes: 0
From: Nor-Cal, CA, USA
Re: why does my prelude rev hang ?
bump ~ When I press the throttle quick I have a quick hesitation. Rpms drop about 100 rpms then rise to 3500 and it takes its time coming down to 2k then drops normally. so?
Trending Topics
Thread Starter
Honda-Tech Member
Joined: Dec 2005
Posts: 467
Likes: 0
From: Nor-Cal, CA, USA
Re: why do my rpms hang at 3k on my prelude ~ then drop normal to idle
hmm ya my coolant lvl is staying right at the top. I have allready relieved the air at the top of the thermostat also.
Junior Member
Joined: Nov 2008
Posts: 272
Likes: 0
From: Slummervill, MASS, USA
Re: why do my rpms hang at 3k on my prelude ~ then drop normal to idle
try cleaning your iacv to see if gets better! is the throttle cable sticking? a friend of mine had a similar problem with his car and it ended up being a dirty throttle cable.
Thread Starter
Honda-Tech Member
Joined: Dec 2005
Posts: 467
Likes: 0
From: Nor-Cal, CA, USA
Re: why do my rpms hang at 3k on my prelude ~ then drop normal to idle
I have cleaned the idle valve. I have taken the throttle cable off and pushed the pulley alone and I still have the problem.
another symptom is : when I start the car the rpms immedietly jump to 2k then drop to normal idle.
another symptom is : when I start the car the rpms immedietly jump to 2k then drop to normal idle.
Thread Starter
Honda-Tech Member
Joined: Dec 2005
Posts: 467
Likes: 0
From: Nor-Cal, CA, USA
Re: why do my rpms hang at 3k on my prelude ~ then drop normal to idle
SOLVED : I am not using any smog devices right now. So I have most of my vacuum lines plugged. I plugged the air boost valve by sticking a hose to it and connecting the other end to one of the intake manifold ports. I figure hey its all vacuum so whatever. But that was my problem for the rpm hanging around 3500 and slowly dropping to 2500 then dropping normally from there.
Thread
Thread Starter
Forum
Replies
Last Post
