This has been happening for quite sometime now... a few months after installing my obx headers and aem cai I notice that sometimes my engine rpm's fluctuate considerably, it even shut off on me a few times! the engine rpm's would fluctuate when when i slow down and get more apparent when im at a complete stop. The rpms drop when it fluctuates, never rises above idle. When im at a complete stop the rpms would start dipping and sometimes the engine would shut off. I just recently got my 30k tuneup by acura and the technican said that they think the reason for the engine fluctuations were due to the intake, so they reprogrammed my ecu ( i thought that this was bullshit, but my intake definatly sounded different after the tuneup, it doesnt quiet down after the engine warms up). after they 'fixed it', it worked, for awhile, but now its back. HELP!!!

 

Maybe the Oxygen sensor was damaged during the Header install.

Shawn S

 

You have a problem with the idle sensor!... it's not the intake.

 

Nashua can you be more specific, whats the problem and how do i solve it?

 

It is been reported more than once that some CLS/TLS had engine idle trouble. Rpms would jumps 1-2k then drop.

If there is a bad sensor you will get a check engine light and this can decoded in 1 mins.

Let the dealer check the idle control system

 

Reprogram the ecu??????
Ok what does that mean exactly?????
Seriously the idle motor probably is crapping out .Have the dealer take a another look at it .Defective idle motors are not uncommon and can cause either an erratic idle or possibly stalling .CAI headers are not going to cause that .
Jens