another timing question....

[MI95Cobra]

when i timed my car to 15deg it doesn't idle right after a few seceonds it wants to jump above 1000rpm and drop below 500 rpm....then usually idles again at 800rpm.... would changing my iac and tps help fix that???? my wife's cobra is at 20 deg w/ no problem...

 

[94Cobra69SS396]

Did you say in your last thread that you disconnected the battery? If so, mine does the same thing after I reconnect for about the first 200 miles or so until the computer relearns the idle.

 

[final5-0]

I'd clean it as a first thing to try ... the isc not the tps

Grady

 

[HISSIN50]

Mine also hunts after a battery disco'.

And cleaning the IAC, as Mr. Grady pointed out, is never a bad idear.

Good luck.

 

[MI95Cobra]

well i just got an iac and tps, but could the sparks plugs also cause it??? i'll be messing with them about 3pm saturday considering its 3am and i just got offwork...

 

[94GTStang]

hmm....

change out the TPS and IAC and see what that does for ya.

In the mean while, check out okdhm.com for a Oklahoma based car club

 

[HISSIN50]

If not asked, are any codes stored in the KAM. Even if not, something like an out of calibration ECT (it wont necessarily toss a code because it can be within absolute spec) can cause idle hunting.

EDIT: I would not look for plugs to affect a hunting idle.

Good luck.

 

[MI95Cobra]

actually, i think i found the problem....since i was changing out my iac and tps, i found one of those hard plastic hoses broke that goes to the smog pump lines also i was changing out the spark plugs and you know how the cobra gt40 heads are suppose to have platinum plugs...well these didn't....and they were kind of rusted....

 

[HISSIN50]

GT40 heads should have plat plugs? I dont think I've heard that before.

 

[MI95Cobra]

yeah....when i called a few auto places they all told me that cobra's come with plat plugs...i just figured that it had to be the gt40 heads...