Idle problems

Mustang_289 · 07-19-2002, 08:36 PM

Got an 88GT - the idle is all over the roadmap. Sometimes it idles fine, sometimes climbs up between 1500-2000, sometimes doesn't idle at all, foot off gas and clutch in - engine simply dies.

LX5liter · 07-20-2002, 09:56 AM

Did you try removing and cleaning your IAC? They have a tedency to get gunged up and start sticking.

Mach351C · 07-20-2002, 04:52 PM

Ive got a same problem with my 72 mach. When i first start the car it has a tendency to try to die. I feather the gas peddle. If i put it in drive or reverse right away after starting it the RPM drops way down and wants to die. I have to let the RPM get up to 1000 in park before I can actually drive it without it dieing. Once i have been driving for a couple of minutes its warmed up and in drive its at about 800 rpm. Sounds great but when i put it in nuetral or park it goes up to a 1400 rpm. too high I beleive. anyone help?

Mustang_289 · 07-20-2002, 06:37 PM

What is the IAC?

Here's what we did today - sometime ago we took the stock air filter off and put a K&N cononical on to increase air flow. Talked to our local mustang performance shop, and he suggested the K&N might be causing the problem with the stock speed density setup on the 88s. Went back and put the stock air filter & air box back on and see what happened. Ran really great no idle problems.

PKRWUD · 07-22-2002, 06:33 AM

Quote:

Originally posted by Mach351C
Ive got a same problem with my 72 mach. When i first start the car it has a tendency to try to die. I feather the gas peddle. If i put it in drive or reverse right away after starting it the RPM drops way down and wants to die. I have to let the RPM get up to 1000 in park before I can actually drive it without it dieing. Once i have been driving for a couple of minutes its warmed up and in drive its at about 800 rpm. Sounds great but when i put it in nuetral or park it goes up to a 1400 rpm. too high I beleive. anyone help?

Sounds like a choke problem. What kind of carb do you have, and when is the last time it was serviced or rebuilt?

Take care,
~Chris

07-19-2002, 08:36 PM	#1
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	Idle problems Got an 88GT - the idle is all over the roadmap. Sometimes it idles fine, sometimes climbs up between 1500-2000, sometimes doesn't idle at all, foot off gas and clutch in - engine simply dies.

07-20-2002, 09:56 AM	#2
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	Did you try removing and cleaning your IAC? They have a tedency to get gunged up and start sticking. __________________ Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542

07-20-2002, 04:52 PM	#3
Mach351C Registered Member Join Date: Dec 2001 Location: phoenix, AZ Posts: 60	Ive got a same problem with my 72 mach. When i first start the car it has a tendency to try to die. I feather the gas peddle. If i put it in drive or reverse right away after starting it the RPM drops way down and wants to die. I have to let the RPM get up to 1000 in park before I can actually drive it without it dieing. Once i have been driving for a couple of minutes its warmed up and in drive its at about 800 rpm. Sounds great but when i put it in nuetral or park it goes up to a 1400 rpm. too high I beleive. anyone help? __________________ 1972 Ford Mustang Mach 1 351 cleveland

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07-20-2002, 06:37 PM	#4
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	What is the IAC? Here's what we did today - sometime ago we took the stock air filter off and put a K&N cononical on to increase air flow. Talked to our local mustang performance shop, and he suggested the K&N might be causing the problem with the stock speed density setup on the 88s. Went back and put the stock air filter & air box back on and see what happened. Ran really great no idle problems.