logdog

Thanks a lot, guys. Yes, the car is SPFI and yes, the gauge has no reading whatsoever. The sender that I tried was a new one from the parts store. Someone else had also tried swapping it for a new one years ago, with no success. I believe the gauge is defective. Anyway, I'll have to look into the IAC again. I checked the continuity a while ago and it was within spec, but it deserves another check, as well as making sure the passages aren't gummed up. The screw that I'm talking about is on the front of the TB and the head faces the passenger side fender. I'll double check my timing. FYI, the check engine light comes on when the idle starts jumping around, setting the IAC code, as I remember. I'm going to look into it being gummed up, though. What does replacing the diodes entail? Thanks a million guys.

My Subaru is having many little electrical problems. For one, the idle is not completely kicking down. This is a non-turbo, 5-speed, 4-wd EA-82 w/ 210,000 mi. on it. It will kick down and then rev up, kick down, rev up, kick down, rev up repeatedly and quickly. Each cycle last about 2 seconds. Adjusting the minimum airflow doesn't affect the high-speed idle. The car will drop the idle to below 1000, like normal, if started after the car has been warmed and shut down. Once I drive off again, though, when I come to a rest, the idle cycles again. When starting from cold, the fast idle works normally. Also, the lights rise and fall in brightness on my dash. The voltmeter reads at about 17 volts charging and I believe the brightness of the dash lights corresponds with this. I know it sounds like the regulator, but I'm not sure. Also, the oil gauge doesn't work, never really has. We've had this car since it was puchased new in '89. Not the sender, we tried. But it does respond when the sender lead is grounded, as if there is high resistance in the gauge or wiring. Many of the problem circuits appear to share some common circuits. I have looked through miles of wire on top of the motor, under the dash, etc. I got the wiring diagrams off of Alldata. Help! please! Thanks.