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post #1 of 2 (permalink) Old 04-27-09, 10:11 AM Thread Starter
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Join Date: Sep 2006
Location: Mpls, MN
Posts: 7
86 with issues

Hey all,

I have an 86 Mustang GT FI, Auto.

I have a hard start, and poor running condition I cannot figure out. I put new plugs, wires, cap, rotor in it all ready. EGR seems to operate correctly. I cleaned and checked the IAC and TPS. I have vacuum to the MAP sensor. There are no cats, I found no vacuum leaks.

I cannot rev past 3,000 rpms. Fuel pressure was good, and I put in a new fuel filter.

I need some help, any suggestions?

I ran KOEO and KOER tests. I got no codes.

94 Mustang with 67 289, t5
75 F100 with 500HP 390, auto
85 Ranger 4.6, auto
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post #2 of 2 (permalink) Old 04-27-09, 03:46 PM
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Join Date: Jul 2006
Posts: 1,738
Re: 86 with issues

Check base timing to be sure it hasn't jumped.
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