[longhornchris04]

Originally Posted by Danskman

I had this same issue on my SC. Small DME relay under the passenger seat. $25 replacement and all problems solved.

On a 80-83 SC that might fix the problem, if the ECU relay failed. The 78 & 79 don't have ECUs as they don't have a Lambda system.

As to Scot's question - a long-handled 3mm hex key should do the trick. The hole for the key is on the fuel distributor located in front of the air filter on the passenger side. The hole itself is on the driver's side of the fuel distributor.

Additionally, there is the idle-bypass adjustment on the driver side of the assembly (other side of the rubber boot thingy - real technical) that uses a flat-head screwdriver - but you really need an offset one to get leverage. Adjusting the mixture may adjust your idle - use this to correct it.

I don't have any pictures, sorry.