Blowing 30 Amp Motor Fuse Options

[gschick]

Hi guys got a 98 gs 2.0 with a 41te auto trans the car keeps blowing the 30 amp fuse in the engine compartment marked as motor fuse if I replace the fuse the car will start fine and run fine in park reverse and nuetral will also run in drive if motor has only run for a few minutes. if I drive a 1/4 mile it will blow fuse or if I put it in drive and brake tourqe it will blow the fuse. once it blows a fuse if I replace the fuse and start car it will run fine in park nuetral or reverse. put it in drive it drops dead like shuttin off a switch. my dad replaced the fuse with a circuit breaker for trouble shootin as fuses are 5.00 each also replaced range switch in trans swapped out trans module from my brothers gsx (1996) looked the same dont know if its compatable but it did not work anyway car has a 114 thousand, had a remote start took that of to illiminate that possibility any help would be great thanks Kaitlyn

[Mystique64]

Sounds alot like a frayed starter or some other main cable shorting to the chassis. It's take a helluva short to blow a 30A fuse or breaker.

Have you tried starting the car and then disconnecting and isolating the cable that goes to the starter motor ? Then drive it and see if it blows.

[gschick]

Sounds alot like a frayed starter or some other main cable shorting to the chassis. It's take a helluva short to blow a 30A fuse or breaker.

Have you tried starting the car and then disconnecting and isolating the cable that goes to the starter motor ? Then drive it and see if it blows.

Pulled hot wire off solenoid while car was running no change. accually pulled starter and had it tested, first thing, tested OK. but that doesn`t mean it aint got a problem but its $ 120 to answer that question. gonna try pullin the main feed to starter sometime sunday pops says let ya know what happens thanks for the input Kaitlyn

[jonbonazza]

You obviously have a short somewhere. Time for some wiring diagnostics! Have fun! (IMG:style_emoticons/default/tongue.gif)

[gschick]

this thing is puzzling as it has to run for about 5 minutes to warm up, then it will only do it when it is shifted to drive or 1st or 2nd gear trans module???

[SRSONE]

sounds like u have an open wire that rubs when the engine/trans shifts around....find a wiring diagram for that fuse and follow all the wires that fuse feeds like mr bonanzza says -- Have fun!

[dannwo1]

Ckeck the harness running past your EGR pipe. It's a common occourance in these engines that the pipe actually melts the conduit and insulation in that section of harness and causes all sorts of trouble.

[gschick]

[quote name='SRSONE' date='Aug 10 2009, 08:20 PM' post='264137']
sounds like u have an open wire that rubs when the engine/trans shifts around....find a wiring diagram for that fuse and follow all the wires that fuse feeds like mr bonanzza says -- Have fun!
[/quo srsone and jonbonanzza I found the damn short it was as srsone said motor movement activated. I hate that electric trouble shootin stuff I`m a body man before a wrench but she`s back up and runnin thanks to people like mystique64 and you guys thanks again Kaitlyns dad Mike