99 GTP wont start, need help.

[kamposs]

Hi all.

I have a 1999 Grand Prix GTP.

Recently bought the car, decided to change some stuff. Put it back together, now it wont start or turn on for that matter lol

Heres what I changed:

-Supercharge Coupler / Oil (Took off Coolant and Alternator)
-Spark Plugs / Spark Plug Wires


When I took off the alternator, the + side hit metal and sparked, and the same happened when I put it back on. I am not sure if I blew a fuse, or if that sets off a safety thing. My spark plugs and wires are all on right and tight. My battery has 12.5 volts. The two connections on the alternator are hooked up correct, the belts are all on properly. I am guessing/hoping it is a fuse issue, but not sure which one or how to check.

Note: I never unplugged the battery during this whole process.

Could use your help! Thanks in advance for helping me. I was hoping to drive the car tomorrow, but looks like that wont be happening lol. Please let me know if you need more information for a diagnosis. Thanks, Erik

[FordMan77]

Ok, stupid question. Have you checked all the underhood and inside fuses? With the spark I'd suspect you've blown a mega fuse somewhere. Start with the underhood fuses first and go from there.

And when you say "it won't start or turn on", do you mean that when the battery is connected and you put the key in the ignition and turn it to start that there is absolutely NO power to anything, or will the engine just not turn with the starter?

[Fivefingerdeathpunch]

Check the IGN fuses.

[kamposs]

The Battery and IGN fuses under the hood all look good.

I mean when I put the key in the ignition, literally nothing happens, no radio, no lights, nothing. Iceman said I probably arched the battery and to bring it to autozone and have the battery load tested. and replace that first. If it is not that I could have blown the PCM... any thoughts on this? I will post info as I get it. Tomorrow afternoon I will get my battery checked, this sucks

[Fivefingerdeathpunch]

You have a DMM right?

Put it on the battery once you try and start it, see if it drops to a super low voltage.

Otherwise keep pulling fuses to see if any are blown.

[kamposs]

You have a DMM right?

Put it on the battery once you try and start it, see if it drops to a super low voltage.

Otherwise keep pulling fuses to see if any are blown.

nothing turns on when i put the key in the ignition, i don't think anything would show up if the car doesn't even turn on.