Idle probs.
02-12-2010, 05:49 PM
#1
Thread Starter
Join Date: Feb 2010
Location: california
Posts: 7
Idle probs.
just did a HCI swap and while the power and torque is there, there is a bit of a surge at idle>> would a custom tune/chip eliminate this problem while also increasing hp and tq? (afr 165s,trickflow street upper & lower with a stage 2 cam, 24lb injectors, 70mm tb, calibrated 75mm maf) (fresh 302 block) 88 gt
02-13-2010, 02:21 PM
#4
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
should not need a tune to fix such, I have a more aggressive set up in my 89, and while it had a hot restart suge issue, by dialing in FP, SETTING TPS, and making sure no codes existed and no vaccum leaks were pressent, then performed a base idle reset then drove the car imidiately for 60-100 miles idle settled right in, so go through the basics first
02-13-2010, 06:01 PM
#5
Thread Starter
Join Date: Feb 2010
Location: california
Posts: 7
i have yet to find any vacuum leaks. base idle set. maf clean. salt and pepper connections are also clean but it did pull codes 12, 21, 33, 44, and 94. i looked up the codes and know what they mean but what would be the best way to go at this? if anyone needs more info let me know. thanks
02-13-2010, 06:12 PM
#6
Thread Starter
Join Date: Feb 2010
Location: california
Posts: 7
at start up, cold or hot engine starts right up then the rpms drop. sometimes saves it self but most of the time it dies out.. i have learned to live with it by giving the gas a tit of a tap when needed. its really bad when i press on the clutch while coming to a stop.. i normally have to shift into neutral way ahead of time before coming to a stop in order to keep it on. It did help when i set the base idle but it didnt last to long, problem came back within a couple of days.
02-13-2010, 08:48 PM
#7
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
did you run koer at operating temp?? if not code 21 is the result, if so ect sensor may be bad, don't worry about 33 = egr code = function deleted..........for 12 , have you cleaned the Iac and made sure no carbon build up is present in the TB?? AR FOR 44 AND 94...DO YOU STILL HAVE the smog system on the car?? if not = reason for codes but irrelevant to your prob
02-14-2010, 08:42 PM
#9
Thread Starter
Join Date: Feb 2010
Location: california
Posts: 7
the car had been sitting for about an hour when tested so it probably wasnt at operating temp..... smog system is all there. ("AR FOR 44 AND 94" i dont understand.) ill try cleaning the IAC tomorrow morning. ill keep you guys posted. thanks.
02-16-2010, 01:27 PM
#10
Thread Starter
Join Date: Feb 2010
Location: california
Posts: 7
so i decided to just replace the IAC.. reset base idle.. set TPS.. cleaned MAF.. cleaned throttle body plate.. all seems well now. hopefully she holds up this time. thanks for all the help! i really appreciate it.