caspermj

Hi gang,

Tried searching "chugging" and "rough running" etc. Can't find anything like mine. 1983 US, 4.7 auto, just replaced the horn relay to repair no horn, fixed it. Started the car and fired up fine but has a rough idle which seems to get lower as it warms up (normal, but seems like it would want to stall if it got up to operating temp). Gently revving, it still chugs. This happened all of a sudden. The exhaust looks clear (was running a bit rich d/t the PO cutting the O2 sensor wires off, but still ran very good), no black, white smoke, etc. I realize this could be lot's of things, but has anyone ran into something similar? No driveability problems before this. Just finished a 1200 mile trip a few weeks ago, ran very strong.

~Roy

davek9

Fuel Pump, or more likely the FP relay as you were in the CE panel, do you have a way to check fue pressure?

caspermj

I don't I'm afraid. Can this relay be jumped for testing?

caspermj

Just got back from jumping the relay. Same thing. So, I started pulling each connector at the bottom of the fuse/relay panel, found a few "green" ones (rest like new), cleaned and started back up. Runs great Coincidence? Don't know. I'll post again if it comes back. Thanks

~Roy