Question about 1991 Pontiac Firebird

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Battery wont charge

I have had this issue for days now. Its a 91 firebird v6 . I replaced the battery and alt. It still wont charge the battery. I also changed the neg cable cause I noticed coolant was leaking on to the connection. What could it be.

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  • ajsch08 Jan 30, 2009

    isnt that part of the alternator?

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  • 56 Answers

Voltage regulator needs replaced

Posted on Jan 30, 2009

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New battery new alternator battery still wont charge ??


91 , (is the charge lamp glowing key on, (shoe drops)?????
there are many ways to make it stop doing 13.3v to 15vdc running,
lots. ill list them all..
the 2 stated. in blue above. and.
1: bad dash lamp this lamp boot staps the field current or the alternator is born dead. so is it dead key on, , yes, BINGO.

2: bad alt ground, or starter top bolt , ground to battery bad or loose.
3: bad wires to the rear of alt. all 3.
4: bad battery cables. (or just corroded ends or conn. wrong)!!!
5: alt belt loose or missing.
6: engine hot RPM not 750 to 850 Rpm if 500 BINGO.
and more.
http://www.fixkick.com/Charging/charging.html

here is the drawing.
IS the sense wire is dead, not 12vdc.???

http://www.fixkick.com/Charging/charge89.jpg


the reg inside can shut the ALT down for.
over voltage
over current.
or if it THINKS(sic) that the batter internal resistances is too high. for ANY REASON what so ever. it will shut down
these protections prevents the ALt. from blowing expensive electronics (all of it) to kingdom come. $$$$$

its a feature.

Jul 08, 2014 | 1991 Suzuki Sidekick

1 Answer

91 firebird new battery just wont start


I agree, more information would be helpful and engine size too. Also, why did you replace the battery and what was it doing or not doing just prior to the battery change?

Jun 03, 2014 | 1991 Pontiac Firebird

1 Answer

My 91 firebird battery keep draining put new alt on test fine new battery fine drove it for a half hour and it died again whats wrong


You have a power drain ...and it sounds like a big one. Basically there will be a short somewhere in your cars wiring causing the power to drain from your battery, I would also check your car stereo wiring as sometimes they are the fault

Mar 01, 2011 | 1989 Pontiac Firebird

1 Answer

My 92 is a 5.0 w/air and a 5 speed man. I'm having a problem with over charging I have replaced the alt. and battery and have the starter checked I am wondering if theres an other voltage reg other than...


OK, I know I'm going to get a low score for this. but how can you tell if a battery is being overcharged? I'm not trying to be smart or anything. If you really believe it's being overcharged, I'd like to know more.

Jan 03, 2011 | 1992 Pontiac Firebird

1 Answer

I put a new tensioner for the belt on my 1998 pontiac firebird v6. now the battery went out and dont know if its the battery or alternator


The best way is to extract the battery and FULLY charge it, then test it. Many parts stores can do this for free. Then, if the battery is okay, pull the alternator and have it bench tested. Likely that one of those steps will show your issue.

Batteries that have gone completely dead seldom have very much life left in them...

Sep 30, 2010 | 1998 Pontiac Firebird

2 Answers

1999 COUGAR V6 BATT WAS ON SO I REPLACED THE


possibilities:

loose belt, if it is worn then it will not keep the battery charged...
loose ground wire or bad ground wire...
possibly bad alternator, not keeping the battery charged enough, that would explain the stalling, and loss of power.. hope this helps you.....

Mar 21, 2010 | 1999 Mercury Cougar

2 Answers

Light stays on . i have a new alt and new battery and new wire leading from battery to starter to alt. if i disconect the battery the car dies. the alt was bench tested and puts out 15.1 volts yet wont...


Check the drive belt tension and wiring connection at the alternator and at the battery. Check for a blown fuse in the fuse block . -hope this helps

Feb 24, 2010 | 1985 Cadillac DeVille

1 Answer

96 z 28 wont start


The Alt is okay but the battery won't keep a charge? Replace the battery. At least take it to an auto parts store, and have them do a load test.

Your fuel pump is electric. When you turn the key on it pumps up. After it has developed the needed pressure, it no longer pumps, hence you won't hear it working anymore.

Diagnose your problem going through the various systems. Right now you have a problem with the starting system. It sounds like, from your explanation, that the battery is bad.
If your battery checks out, and then you have the alternator checked out, you have an electrical drain. This may be tough to find.

After you replace your battery, wait 10 minutes, then try to start your Camaro. If it doesn't start, (Key to the Off position), take the Positive battery cable loose. Wait 2 minutes, then reconnect it. You are resetting the computer.

Jul 20, 2009 | 1996 Chevrolet Camaro

2 Answers

91 firebird wont start


I had the same problem with mine. I have a 91 trans am, and My problem was a temp sensor on the motor. I put a new one on, and it fired right up. Hopefully that helps you out a bit.

Nov 20, 2008 | 1991 Pontiac Firebird

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