93 lt1 electrical problems.....
Thread Starter
Teching In
Joined: Sep 2008
Posts: 25
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93 lt1 electrical problems..... I have a 93 lt1 trans am and the guages surge erratically (rpm) when i hit the throttle, and the horn relay goes nuts! I removed the horn relay but still have issues. 3 or 4 of the fusible link wires burnt out a while ago and gave me the same problem but i fixed the wires and now I have this problem again.
any clues or diagrams that could help me figure this one out would be great.
Thanks, Dave
any clues or diagrams that could help me figure this one out would be great.
Thanks, Dave
Need a little more info. What was the original cause of the burnt fusible links? Are you talking about the fusible links in the engine compartment next to the battery? Does the car have headers, possibly burnt harness that runs down between the passenger side header and frame rail?
The erratic RPMs sound like a bad ground. Check the three small ground wires that come off of the engine harness (two light brown and one black) that connect at the front of the motor near the coil.
Here's a link to shbox website where you'll find plenty of schematics, most are not specifically for 93 but 90% will be correct for your car. http://shbox.com/1/schematics_wiring.html
The erratic RPMs sound like a bad ground. Check the three small ground wires that come off of the engine harness (two light brown and one black) that connect at the front of the motor near the coil.
Here's a link to shbox website where you'll find plenty of schematics, most are not specifically for 93 but 90% will be correct for your car. http://shbox.com/1/schematics_wiring.html
Thread Starter
Teching In
Joined: Sep 2008
Posts: 25
Likes: 0
Need a little more info. What was the original cause of the burnt fusible links? Are you talking about the fusible links in the engine compartment next to the battery? Does the car have headers, possibly burnt harness that runs down between the passenger side header and frame rail?
The erratic RPMs sound like a bad ground. Check the three small ground wires that come off of the engine harness (two light brown and one black) that connect at the front of the motor near the coil.
Here's a link to shbox website where you'll find plenty of schematics, most are not specifically for 93 but 90% will be correct for your car. http://shbox.com/1/schematics_wiring.html
The erratic RPMs sound like a bad ground. Check the three small ground wires that come off of the engine harness (two light brown and one black) that connect at the front of the motor near the coil.
Here's a link to shbox website where you'll find plenty of schematics, most are not specifically for 93 but 90% will be correct for your car. http://shbox.com/1/schematics_wiring.html
I looked at shbox's web pages and I have schematics out of a haynes repair manual but it just doesnt add up for me. like I dont know where to start looking again.
