Alright guys, got a question for da DF Dub experts...the polished plenums, throttle body, plenum spacer are installed...got a CEL...figured..ok different air mixture etc...I do the the actual ECU reset/relearn and the idle goes to perfect 750 +/- 100 or so...BUT...as soon as I turn off the car and then turn it back on..the idle runs high again (bout 1k)...and then sooner or later it throws the CEL back on...I'm trying the whole disconnect battery deal but I dont think that's the solution.

I've ALREADY checked the board and the only thing I find are the same instructions on doing the reset...

ideas anyone..anyone???

 

Well you need to pull the code - if you post that we will have a better understanding of where the CEL is coming from. I can pull codes and have a cipher so we could at least look that up and get you pointed in the right direction.

We need that number though - CEL mean sh*t without the code.

BTW Pulling the battery cable doesnt work..Ive left mine off for 3 days ( I do that when I go out of town) and nothing changes except the radio..

Or any autoparts store can pull the code for ya.

 

Might need throttle body reset, check ur vacuum hoses, check for leaks.

 

Thanks for chimin in guys...well the update is...I pulled the battery off overnight and idle is now normal but now my heater was acting up...wdf...I'm guessing whenever we disconnected the plenums maybe air bubbles got trapped in the system...well, I will let everyone know in a few days what happens...thanks homies.

 

nah - you should be good - ECU is just relearning..

Thanks for the update..

 

yes JD to what Jake is saying...its just re-learning itself...mine did that as well and it was alitlte sluggish but takes a couple of days to re-learn everything..I know we got everything tightened down right so you shouldnt be having a problem.

 

Air can leak into the system when you disconnect that coolant hose on the bottom of the throttle body. There's a bleeder valve on the upper left side of the engine bay.

 

Make sure you didn't accidentally pinch the rubber gasket around the oil cap in between the spacer or plenum during install. It will cause a leak and could trigger the CEL.

 

Zack I always make sure to check that spot when installing the plenums. That should be okay.

 

Cool... I've done it myself, just something I always check for now

 

thats the first thing I checked!!! LOL!

 

Yeah, Kris is f'n scary....he had all the screws memorized....

 

lol well the amount of times I have done any of that I have memorized the torque sequence too! LOL along with what every bolt is and where its located