well I have a b18b (95 LS) in a 96 civic hatchback and decided to change my intake manifold gasket last week and for some reason my car is reving at 2,000 rpm until now. I double check everything and even replace the intake manfold gasket twice! but still no luck and then i thought it was my throttle body cable so i went off and took it off with the car running thinking that the cable was too tight still no luck. I tried cleaning the fitv and even replace it and no luck there. So my last two options were maybe it was my map sensor or my ICV so i went out and clean and replace those and still NOTHING CHANGE, and I've already check all the hose. So please any suggestions? Please feel free to bump

 

I am going to go try replacing my pcv and see what happen, I'll be updating once i get off work so if anyone have any suggestions please feel free to BUMP

 

anyone?

 

run the car and spray brake cleaner over areas of the IM that you suspect mite be causing a vacuum leak. the idle should drop a bit once you spray over the leaking areas...

 

does it idle after a tn minutes-cause if so yours ect sensor is bad like samuel l jackson, if its constant than your car sucks and get a new one-joking ,um i dont know try you idle screw its right above your intake manny-get at it son ,oh the ect is under your distibuter

 

i try everything you guys have mention above but still no luck. and yes it idle up the whole time doesn't even drop a bit and the idle screw is all the way in.

 

well i replace the pcv and I'm still having the same problem. Any suggestions please feel free to bump.

 

you have a vacuum leak or your thing in the fitv isnt screwed in all the way.

 

Did you bleed the cooling system when you were done? coolant flows through the IACV and if theres air in it will idle high and or erratically.


Modified by 94EG8 at 10:44 AM 9/21/2008

 

well i went off and started the car until it warm up and left the radiator cap off would that be known as bleeding it?

 

did you tighten down all nuts and bolts to the right torque specs and in the right order? failing to do so will result in spiratic idling issues as you mentioned... check all hoses as well, could be some other sort of vacum leak

 

yeah, thats what I was thinking I went off and bought some starter fluid so I'm gonna go ahead and spray again and double check for any type of leaks tomorrow. I'll let you guys know with the updates

 

why did you "DECIDE" to change your intake manifold gasket in the first place? what problem was there that you thought changin the gasket would help?

 

my intake manifold gasket was worn so I decided to do a huge maintenance but it ended up to being a big mistake and now I'm stuck with my car idle ling at 2,000 rpm. I been driving like this for a week now and is irritating me like hell. As far as I'm concern when I accelerate idle drop and then goes back up for some reason. I really appreciate all he help from everyone. If any one have any other suggestions please feel free to bump.

 

is your throttlebody gasket damaged? did you change that too?

 

hmm. maybe you have a vacuum leak and you hit your tps somewhere making it not calibrated anymore. check that. But might as well pull off you fitv and screw the plastic thing in the middle all the way in.

 

sorry for the late reply i wasn't able to reply back since I have the trial version. There is a minimum of post i can do per day. Well anyway, yes i try everything above and I am going to go check for vacuum leak again for the fourth time and see what happen . Ill keep you with the update. Thanks

 

i have the same problem put a b16 swap in my eg and since day 1 has had a high idle its not the screw idle doesnt change when i spray it down with carb cleamer ive changed every gasket possible to try and fix this

 

On the back of the throttle body theres a gold plate with phillips screws 8mm will work also take that off and theres a white plastic nut check if its loose if so tighten that up as tight as u can, idle should go back to normal. if it continues to happen later then the screw came loose again, so then take a tin soda can and block off the port between the throttle body and the valve that bolts on there, then u'll never idle high again.

 

its not the screw ive tried that

 

I started the car up. What do you know high idle at about 2000 rpms. I have tried a few different things to make it go down and nothing. I can blip the throttle and it will idle down for a split second and then right back to anywhere from 1600-2000 rpms. I knew this would happen before I even started this swap of manifolds. Anyone else had this problem yet and if so what did you do to solve the problem?

 

I have try everything Just because of this problem I feel like giving up and getting out the Honda scene. Please any more suggestions will help.

 

disconnect your tps and see if it stops.

 

I disconnect the tps and it actually ran worst er then it did before

 

did u scrape off all of the old pieces of the previous gasket? a little material between the new gasket and the head could cause a leak.. double check your hoses.. and how high is this idle that we're talking about