Well I need some help again. I have an 84 GL, I just took out the instrument panel the other day to take out the ECS lightbulb. Well, as soon as I put it all together again, and started my car, the idle was way low, like 500 rpm. So adjusted the idle speed on the carb, all fixed idled fine, even drove it a short way, still fine. Until I drove it for about 15 minutes later on. As soon as I let it idle again at a stop, the idle had dropped down to 500 or so, running rough. Any ideas what is causing it to keep dropping down?

1. are you sure you have the grounds, wires, vac lines,and tach is reading correct?

 

2. is the ac on? may be an idle controller

Checked the vac lines, they are fine. Didn't mess with any of the wiring or grounds with the inst. panel. Tach is fine, it reads just like the engine sounds, very low rpm's. I have no AC.