Idle problem

bigred90gt · 08-03-2003, 02:06 AM

A friend of mine has an 87gt with an idle problem. When cold, it cranks and the idle rises to about 2k and then falls to about 500. This cycle repeats itself a few times until the temp starts to rise. Once it warms up, the problem goes away. Like if he stops at a store, when he comes back out, it acts fine. I was thinking EGR, but I would like a second opinion. If anyone has any useful info, it would be greatly appreciated.

Caymon

TMASTER · 08-03-2003, 11:40 PM

try replacing the IAC, if you dont want to buy one, find another mustang guy and switch it, it takes like 5 min... remember to unhook the battery for 10 min... that could be it! ive had a shiza load of Idle problems, and i still do! lol... i just drive it like it is.

drtbiker · 08-03-2003, 11:49 PM

i would say either the iac or the egr valve

08-03-2003, 02:06 AM	#1
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	Idle problem A friend of mine has an 87gt with an idle problem. When cold, it cranks and the idle rises to about 2k and then falls to about 500. This cycle repeats itself a few times until the temp starts to rise. Once it warms up, the problem goes away. Like if he stops at a store, when he comes back out, it acts fine. I was thinking EGR, but I would like a second opinion. If anyone has any useful info, it would be greatly appreciated. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

08-03-2003, 11:49 PM	#3
drtbiker Registered Member Join Date: Jan 2002 Location: Mt. Prospect,IL Posts: 474	i would say either the iac or the egr valve __________________ 87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec tranny, centerforce dual friction clutch, upr and lwr CA's 255lph FP and soon more to come.... when i have money again SOME ADVICE Don't do burn outs in reverse it is very expensive New times with dead hook on dr's 13.27@103 with 2.0 60 foots w/100lb system Fastest time to date: 12.8@113

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Idle Problem	skrewhead	Modular Madness	1	07-24-2004 10:04 PM
Idle problem and jerking?	69fastback	Windsor Power	10	01-11-2003 05:58 PM
Idle problem 88GT Speed Density	chuck88	Windsor Power	9	07-07-2002 09:16 AM
347 Big Time Idle problem	89FHPLX	Windsor Power	2	01-15-2002 12:02 PM
Different idle problem?	Scappoose	Windsor Power	0	11-28-2001 05:16 PM

08-03-2003, 11:40 PM	#2
TMASTER Registered Member Join Date: Sep 2002 Location: TEXAS Posts: 161	try replacing the IAC, if you dont want to buy one, find another mustang guy and switch it, it takes like 5 min... remember to unhook the battery for 10 min... that could be it! ive had a shiza load of Idle problems, and i still do! lol... i just drive it like it is.