1990 Pontiac Firebird wont turn over

1990 PONTIAC FIREBIRD
197,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
RLBREED
  • MEMBER
  • 1 POST
i have a new battery new starter and alternator. i bypass the theift device no results. i can start with the alterator wire and can turn it off by the key but will not start by the key. i can not get ay power from the alternator side of the solenoid
Mar 16, 2010 at 5:59 PM
Advertisement
Avatar
ERNEST CLARK
  • CAR REPAIR CONTRIBUTOR
  • 1,730 POSTS
Begin your diagnosis at the fuse box. Even if the fuses and relays are good, probe each connector, including the main power terminal for 12-v and any high resistance. (There may be a corroded/loose connector or terminal)

Then check your ignition switch/lock and it's contacts and wires all the way down the steering column and into the engine compartment.

If your alternator, bat and starter are known good parts, and your engine runs fine once started (good computer), then your problem has to be in the wiring/connectors. You just have to find it.
Mar 18, 2010 at 9:19 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.