when the engine is cold the idel goes up and down up and down until the engine warms up. could this be a thermostat problem?

 

thats kinda funny. I have this integra in my driveway. Its a project car that I'm working on. It does the same exact thing. I have no clue what is wrong so i'd like to know this info too. I hope someone replies with something useful and please dont say its a vaccum leak cuz its not.

 

Mine does it in the cold too, in fact so does just about every car that I have ever owned. I think its normal.

 

My car started doing that all the time wether it was warm or cold. There is a screw on the left side of the throttle body that you can adjust to alter the idle. Mine hasn't had the problem since.

 

yeah i used to have an 88 integra too with the same problem before i sold it.

 

after my car warms up I have no problem with it, the performance is unaffected.

 

Its just ur Throttle body sucking in cold air warm air higher rpm (cold) lower rpm (warm) adjust ur throttle bottle cable very eazy to do.

 

Throttle bottle? Do you mean throttle body cable?

 

check your throttle position sensor!

 

The same thing happens to me, but after a few minutes it idles normal, if i adjust the throttle body would it not be screwed up when it starts to idle "normal".

 

you engine is throwing a code check out your o2 sensor, cause i know with my civic when i installed my h23/h22head i didnt hook up the last o2 sensor and it did that same thing and then when i put it in it stopped doing the werid ideling. so check that out

 

I dont think the guys getting a CEL. I sure as hell aint gettin a CEL. Anyone else had this expierence before? If so, what was the cause and what did u do to fix it?

 

my car did the same exact thing when i swapped it...
it did it like for two months then i took it to my friend to check it...
guess what!!! two sensors where inversed... i mean the two sensors at the back of the intake manifold where connected viseversa... after correction