today i was driving my car and after a pull i did around a car to pass him i noticed that at idle my engine would rev it fluctuates from 800 to 2000 i checked every vacume line i could find and nothing was blown off, is there anything else that could cause this?

 

Check your idle adjustment screw. It's located on the passenger side of your intake manifold. Also, put your foot behind your gas pedal and pull it towards you. My gas pedal was a bit sticky on my Civic and it would cause my idle to fluctuate, doing this corrected the problem.

 

thanks ill try both tomarrow
but i dont think it could be the pedal just because it does it in such a perfect rhythm
and you think something could have happened to the screw during a pull?
thats the only reason why i thought it had to be a vacume line or something

 

any other ideas for a bobbing tach?

 

??

 

come on!
no other explanations for this?

 

check the screw behind your tach and make sure its tight on the green film

 

check your iacv as it may be the cause of this. this is what causes the common problem of the roaming idle upon startup. replacing it may solve your problem.

below is a link to an article on TI.net showing how to clean the iacv...
http://www.team-integra.net/fo...earch

 

thanks man ill try that
great link

 

the only other thing i can think of is checking your plugs ............ if one is fouled out your gonna have a idle issue

 

Check your coolant level.

 

This sounds like some sort of vacuum leak. If all your hoses look good, try spraying starter fluid around the intake manifold with the engine running to see where it is leaking.

 

thanks for the input again
im going to try those ideas today, it really sounds like it has to be a vacume line just because the bobby is so rhythmatic

 

it was none of those problems and today i also noticed when the car is in accesorie the vacume controller that is wired toi the boost controller makes a loud clicking noise and the screen on my avc-r reads 2pounds opf boost

 

any ideas?