Im stumped.... idle drops to 500rpm

ScubaCoupe

Registered User
everytime something electrical turns on ( fan, heater , a.c ) my idle drops and car sounds like its gonna die. Recently changed the alt. batt tested good. Plugs and wires less than a year old. new PS pump and lines.

Just want it to work right lol... any ideas?

bad ground wire? something else broken maybe?
 
Sounds like you may have either a bad negative or positive battery cable.
Start with the small things. Clean all connections at the battery, and the connections on your starter relay.

I've had bad cables that did not even look like they were bad.

If its your negative cable, you don't need to connect it way down on the block under your intercooler tube like it is now. You can just find a spot near the alternator and ground it out there. I used one of the bolts that hold the alternator bracket to the engine.
 
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