philipmorg

Great, I'll check that valve and report back. Thanks! -P

Thanks for the reply! The motor is carbureted. What other information can I provide to help diagnose this issue?

I have a 1987 GL Wagon 4WD, EA82 1.8L with an idle problem. Here's what I've observed: The idle is extremely rough. The tach shows around 250RPM at idle. The motor runs normally at higher RPMS, and pulls fine on the highway. The problem started suddenly, about two weeks ago. When the motor is cold and the choke is engaged, the RPM is much higher than normal. Normally, with a cold motor and choke on, the idle would be around 1500 - 1800 RPM. Now it is 2500 - 3000 RPM. If I disengage the choke while the motor is cold, it usually dies. After the motor warms up, it idles very rough and slow, but usually does not die. Hot or cold, the motor starts up normally. No problem with starting. I paid a local mechanic to check the problem and he found nothing: no bad valves connected to the carb and no vacuum leaks. I changed the plugs, distributor rotor, and ran 1/2 can of Seafoam through the tank. No improvement. Any ideas on what I can do to diagnose and fix this problem? Thanks!

Oh, thank you for clarifying the location of the engine compartment relays. I saw those when I was looking, but wasn't sure they were the relays I was looking for. I'll replace those next!

Thanks so much for the pointer! I've made the relay swap and will report back as soon as I've verified whether it fixes the problem.

I'm having an annoying problem with the climate control on my 1987 GL 4WD wagon. The symptoms are as follows: If the motor is cold, I can start it and all the climate control functions work 100%. AC, heat, defrost all work and the blower motor works at all 4 speeds. But, if the car runs long enough for the motor to heat up and I turn the motor off, the next time I start the motor (while it is still warm), none of the climate controls work at any blower setting. This happens regardless of the outside temperature or other weather factors. So, if I'm out running errands and park the car, the climate control works on the first leg of the trip, but does not work on subsequent legs of the trip. After that first start-heat-stop cycle, the climate control will not work until the next day, after the car has had a chance to cool off 100%. Any ideas what could cause this, or things I might test in order to identify the culprit? Thanks for any help, --Philip.