94 3.8L rough Idle in gear

[rj_hardy83]

Ok, Idle is fine hot or cold just dosnt like to idle in gear. Ive replaced the IACV, TPS sensor, Plugs, wires, cleaned the MAF sensor that helped alittle for about a day, cleaned the EGR valve, replaced egr gasket TD gasket, and checked for vaccum leaks around the Intake manifold.
old plugs were alittle cooked, new ones gapped per manual specs .054
went through cleaned battery termanals, cleaned the grounds.
Ive been thinking the problem could be electrical, beacuse the idle is slightly worse with the head lights on.
No engine light, car runs strong other than its weak idle.
thanks.

[TBIRD430]

Go have the alternator/charging system tested for free at an auto parts supply house.

Hve u checked the shift position sensor on the tranny?

[Winter_Lion]

Sounds like a vacuum leak......look again. Use a mechanics stethascope. (A cheap version of a doctor's steth) or have a tune-up shop put your car on a Scope. They will do it cheap if you go to the right place. It's only a couple of hookups for the mech. and he can give you a hard copy of the results.

That is the shortest route between where you are and fixing your idling problem. Cheapest too......probably.

Winter