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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
All rite i got a 87 mustang gt 5.0. Anyways The idle has been acting up. It revs at about 800 rpms, idling fine then all of a sudden it will rev up and down for a bit then idle fine. It does it off and on. I checked the tps voltage its at .98. Couldn't find any vacuum leaks. Any idea what it could be?
I checked the IAC by unpluging it while running and the engine died so i think it is good. Where is the egr located and how to i check to see if its good?
The IAC shouldnt matter, even though people says it does, i ran my car without it plugged in and it ran fine, and i know othe people have to. THe egr is the big ugly thing on the back side on the TB, here s link if you need some help to find it www.fordfuelinjection.com
Double check for vacuum leaks! I had one one time on my car and it turned out one of the metal tree pieces under the intake cracked. Rather than welding though I siliconed it