quickerstang

What up first of all.

I have a 1984 SVO and cannot figure it out. Here is one of the problems. It will be at idle(high idle) 1200 rpm and the AFR is like 16-17:1, that is ok. It runs fine when it is like that. Then all of a sudden it will drop to 700 rpm and the AFR will go to 21-22:1 that is very lean and it sounds like it has a monster cam(which would be ok if it did). Also it will cut out at like 6000 rpm and take forever to recover. It will spit and sputter for a while and if I let off the gas it will die. When I attempt to restart it it sounds like a car that has a broken timing belt(spins very freely). I will have to wait a minute for it to start.

Any ideas? I have checked the TPS voltage, VAM voltage and so on. The computer is a "TE". I also tired to run a self test with my scanner with no luck. I even checked the continuity(forgive me if I spelled it wrong) and all the self test wires checked OK?

Any input would be great, Thanks, Donavan

quickerstang

221 views and now answers? Come on guys, what do you think?

tangerine

Idle speed Controller/ Idle Air Control Valve:
Air passages can clog. Solenoid can fail. The Pintal can become dirty and stick, causing erratic idle. Disassemble and clean and lightly lubricate pintle.
Testing: Signal should be 1v or less at idle. Input of `12v will cause idle speed to increase by more than 1`000 rpm.