Engine Idle Problems Continue

mimicons · 02-17-2003, 11:14 AM

After driving for a while, when I slow down, the engine idles up to avout 2500 rpm and stays there. The only thing I can do to bring it down is turn off the engine and re-start it, then it idles at the normal 1000 or so.

I have cleaned out the IAC module completely and then reset the computer as directed, but this did not solve the problem. What other causes am I not finding???

Please give me your advice. Thanks in advance.

Mike

sn95gt19 · 02-17-2003, 02:44 PM

do you have the idle air spacer yet?

at first i would think a vaccum leak but you said "after i drive for awhile" does that mean that it only happens when it warms up?

gtsr515 · 02-17-2003, 07:31 PM

Mike....nice looking car man!, love those notch's.

Okay bud, You need to list any and all mods, driveability problems are my specialty...............I need to know your car better to help.

If I had to guess, well, I don't even want to guess........email me with your package and we'll get her fixed in no time.

Jay

Z28EATR · 02-19-2003, 06:07 PM

i had the same problem and after replacing the iac motor and cleaning my o2's which neither worked. i finally replaced the plugs, wires, cap and rotor, reset ecu (disconnect battery) and that seemed to fix it. Again this is what fixed my problem and it may not even be the same, just my 2 cents. oh yea cleaned my filter too.

stock89 · 02-20-2003, 04:30 PM

I had the same problem for awhile too. It was random but deeply disturbing. I replaced the IAC with one from AutoZone (didn't work), Napa (didn't work either) and finally bit the bullet and got one from the Ford Dealer. I should have done that earlier b/c that DID solve the problem.

Rob

02-17-2003, 11:14 AM	#1
mimicons Registered Member Join Date: Aug 2001 Location: Atlanta Area, USA Posts: 42	Engine Idle Problems Continue After driving for a while, when I slow down, the engine idles up to avout 2500 rpm and stays there. The only thing I can do to bring it down is turn off the engine and re-start it, then it idles at the normal 1000 or so. I have cleaned out the IAC module completely and then reset the computer as directed, but this did not solve the problem. What other causes am I not finding??? Please give me your advice. Thanks in advance. Mike

02-17-2003, 02:44 PM	#2
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	do you have the idle air spacer yet? at first i would think a vaccum leak but you said "after i drive for awhile" does that mean that it only happens when it warms up? __________________ 95gt lazer red (98 cobra clone) Rice Haters Club Member #116

02-17-2003, 07:31 PM	#3
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	Hey Mike! Mike....nice looking car man!, love those notch's. Okay bud, You need to list any and all mods, driveability problems are my specialty...............I need to know your car better to help. If I had to guess, well, I don't even want to guess........email me with your package and we'll get her fixed in no time. Jay __________________ Remember...2nd place is 1st place for losers!

02-19-2003, 06:07 PM	#4
Z28EATR Registered Member Join Date: Jun 2000 Location: Florence, KY,USA Posts: 210	i had same problem i had the same problem and after replacing the iac motor and cleaning my o2's which neither worked. i finally replaced the plugs, wires, cap and rotor, reset ecu (disconnect battery) and that seemed to fix it. Again this is what fixed my problem and it may not even be the same, just my 2 cents. oh yea cleaned my filter too. __________________ 88 LX 5.0 Ragtop "Desire" 14.18 @ 99.65 mph Best 60ft 2.19 YUK!!!! Best Mph 98.9 Slicks 13.86 @ 97.9 mph 60ft 1.93 yeah!!! Mod Specs

02-20-2003, 04:30 PM	#5
stock89 Registered Member Join Date: Oct 2001 Location: Mannheim, Germany Posts: 124	I had the same problem for awhile too. It was random but deeply disturbing. I replaced the IAC with one from AutoZone (didn't work), Napa (didn't work either) and finally bit the bullet and got one from the Ford Dealer. I should have done that earlier b/c that DID solve the problem. Rob __________________ 89 LX 5.0 Notchback, FINALLY NO LONGER STOCK!

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