Electrical short somewhere, need help 86 z28 - Team Camaro Tech
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post #1 of 5 (permalink) Old Dec 24th, 06, 10:56 AM Thread Starter
 
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Electrical short somewhere, need help 86 z28

fuse number 9 keeps popping. the manual specifies its for the gauges, warning lamps, seat belt audible warning, key audible warning, and cruise control. i removed the gauges and cluster, and its still shorting. the key noise is still there even without the fuse (has always done that), the seat belt noise doesnt work (never has). i checked the cruise control by unplugging it, and that wasnt it. it happened on a hard launch last night in a race, i accidently put it gear while the engine was idling down, it was around 2000 rpm. the fuse pops when the ignition is on, as soon as the fuel pump turns off. if the car is already running, it lasts a few seconds later and then pops. any ideas? i also checked the wires at the fuse block visually and with a meter, i was getting 0 on the drivers side and 12.04 on the passenger side of fuses 1, 5, and 9. the buzzer stays on if the headlights are on while the engine is running. it is also popping 30 amp fuses. what else can i check? i havent smelled any burnt wires or seen any cut or burnt. its in a 1986 z28 tpi
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post #2 of 5 (permalink) Old Dec 24th, 06, 12:22 PM
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Re: Electrical short somewhere, need help 86 z28

Fuses 1, 5, and 9 will only have power with the ignition key turned to the on position. It would seem to me that the problem is between the fuseblock and the fuel pump. Check underneath the car for a pinched wire towards the fuel tank. It's possible a wire for the fuel pump was pinched when you launched the car. Does the car continue to run with the fuse pulled out? It might be the fuse for the fuel pump. You can't always go by what the manual states as being the correct fuse and should only go by what is shown on the actual box itself. The manual only shows a typical fuse box and the differ from year to year.

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Last edited by Camaro Dave; Dec 24th, 06 at 01:20 PM.
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post #3 of 5 (permalink) Old Dec 24th, 06, 01:13 PM Thread Starter
 
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Re: Electrical short somewhere, need help 86 z28

its not the fuel pump that is the problem, that works fine and the car is still driveable. its just that right when that turns off, the fuse blows. when i replace the fuse, the pump turns back on momentarily, but goes off when the fuse pops. im not sure if the fuel pump has anything to do with it, thats just how long it takes for the fuse to blow. the car is still running, i just took it around the block an hour ago to make sure i hooked up the speedo correctly.
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post #4 of 5 (permalink) Old Dec 24th, 06, 03:30 PM Thread Starter
 
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Re: Electrical short somewhere, need help 86 z28

upon further review, i have noticed that the cruise control and gauges both have the pink and black wire in common, so i will try and trace that wire tomarrow.
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post #5 of 5 (permalink) Old Dec 25th, 06, 03:50 PM Thread Starter
 
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Re: Electrical short somewhere, need help 86 z28

turns out theres like 5 pink and black wires. anyone got any ideas?
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