Might have something to do with the timeing. I have a 1991 ranger that would drop down to 500 RMP from 1.5K when idleing before i lost my timeing.
Answerreplace tps Ford had a tsb about thissorry to complicate things, i have had my ranger for 4 years 3/12 of which have been speant trying to figure out something similar, it only happens in warm weather, usually at high altitudes it does not do it, it only gets worse. i have run into only a couple people on-line to have the same problem. i have change tps iac and just replaced mass air flow sensor, only have 20 miles with it on but hopefully that was the ticket.
it could be the air flow silinoid remove the silinoid and clog the hole with your finger and see if it idels down . its located by the tps
I had the same problem with my 2000 Ford Ranger revving to about 3000 rpm for no reason and then dropping back down to normal. The problem was the idle air control valve was bad. You can get a new one at any autoparts store for about $50 and that completely fixed the problem. In fact it actually runs better now and idles at a lower rpm.
It is the idling sensor on top of the intake
It could be a sticking valve lifter. If you didn't hear it before, it should be investigated. Ticking is not normal.
Hot, idling in drive, 20 lbs.
Could be your timing belt.
no go see a doctor
A low oil pressure reading when idling for a 1986 Fiero is normal. As long as the oil pressure goes back to normal when the car is being driven, there should be no problem. If it is not, then the oil pressure sensor or the oil sending unit should be looked at.
NO it makes no difference.
Mine is between 500 and 600 rpm's after the engine is warmed up.
When you crank it? What are you driving a Model T Ford?
Normal would be 25-30 psi. 10 psi would be the minimum.
No. It should be idling around 650 warmed up. Look for a possible vacuum leak.
Normal operating temperature 650-750 RPM it should be between 0.5 and 1