86 Mustang idle

PerkinsR

New Member
Jan 20, 2004
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I don't think this is the infamous idle problem. My stock 5.0 will idle fine, but in traffic, as I wait, will decrease in idle to where you need to give it a little boost. As I am cruising, the car will cruise fine, and then act like it is choking/timing out of sync. If you give it some gas, it will cough sometimes and then get back in synch. You can hear it in the exhaust I think.

I have reclaced the TPS, TFI module, rotor, cap, wires, plugs, coil and a sensor on the drivers side of intake manifold, one in the water line on passenger side of manifold. I have set timing from 10-18 degrees with no apparent change.

All of these have made it run better when it is not in its bog done mode. Any ideas?
 
first three things that come to mind:
any codes. always good to pull them, esp since you dont have a CEL.

cleaned the IAC lately?

how is your FP when it bogs?

good luck.