slowec

iTrader: (9)

I swapped a 4l80 in a 99 truck for a friend and the " ing 0 " fuse blows now. traced it down to circuit 1020, a pink power feed that goes to a few solenods in the transmission. Any tranmission "yodas" want to tell me what to look for?

...Please...

nonnieselman

iTrader: (10)

Might wanna check the connector.
Unplug the round connector off the trans and see if it still blows it.
If it does then you got a problem in the wiring.
If it doesnt, then maybe a bad 'noid? Or wiring inside the trans?

slowec

iTrader: (9)

Unpug the main connector, no blow
back out 1020 pink wire, no blow

Just wondering if there were any common shorts to look for, I know I need to drop the pan and inpect.

JoeyGC5

iTrader: (24)

I found someone left the harness loose on a junkyard purchased 4l80e and pinched 1/2 the wires by the pan once

slowec

iTrader: (9)

Now the really awful part. Dropped the pan to test and inspect... Wires look good, solenoids have resistance reading . (not shorted) and the fuse is not popping with ignition on anymore. Gotta love intermittent electrical issues!

slowec

iTrader: (9)

Seeing as how this is turning into a blog instead of a thread, I'll continue. I ordered all the componets on that circuit. new harness, tcc solenoid and both shift solenoids. We will see where that gets me...