Question about 1988 Pontiac Firebird

1 Answer

Battery drain in 3.3L motor

Battery found dead one night. Charged the battery and car started fine. Drove around all day, parked the car, battery dead the next morning. Replaced battery and had system checked by mechanic. Mech replaced starter said it was eating my batteries. Two days later, Im sitting on a dead battery again. I replaced this battery again after a few recharges. Ive taken to keeping the battery disconnected at night so the car will start in the morning. I have been slowly working my way through all of the grounding wires, quick disconnects, and alternator wiring. I have tested the charging system, the alternator puts out a clean 14.4v. Im getting to my wits end, I just gave up and took it to an auto electric repairman figuring they would find a drain and fix it, but they want to replace my brand new battery and starter again! Should I just recycle this poor New Yorker?

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  • Travis Harrison
    Travis Harrison Mar 22, 2014

    Sorry folks, I've no idea how this got into the pontiac forum, the car is a 1993 Chrysler New Yorker. Forgive this old mans trespass into your forum.

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  • Pontiac Master
  • 42,818 Answers

It would appear that steps need to be taken to determine the current draw . it can not unless there is a circuit for it to do so . Disconnect the earth strap from the battery and insert an amp meter in the circuit . IF there is a circuit for the current you will read that current and that will point to what unit is capable of using that current with out serious effect. Low current (up to 3amps ) indicates lights so check boot light still on-glove box light on- interior light on-head light module faulty etc.; Higher draw then look for ECM working when it should be off--sensors operating from shorts __HO2s sensor ABS unit operating. Starter motors I would discount because if the solenoid was operating the starter would be spinning the motor. Check that the audio systems are not operational with out making noise .Units I would be checking would be automatic units that draw through a relay and a check for this would be to watch the amp meter for a change as each power wire to the relay/s was removed and re installed . IF you find a relay that causes a variance I would replace that module and recheck the current draw.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

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miket756
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SOURCE: Car won't start. Replaced battery. worked 3 days.

if there is no charging then its back to the alternator or the way its hooked up? did you recharge your flat battery with a mains charger after it went flat the first time? as no alternator will charge a battery from flat to fully charged,,,,even if you drove around the world none stop! the new alternator may have given up working becouse you overloaded the voltage regulator trying to recharge a flat battery witch would mean it was very week to start with?

Posted on Nov 15, 2009

Testimonial: "good information. Thanks. "

blueextc3221
  • 15935 Answers

SOURCE: car wont start

I noticed you replace the crankshaft sensor, but not the CAMshaft sensor.
The Ignition module takes the input of both sensors to tell the coil when to energize.
This sensor should come up as an error code when you attach a obd reader.
Even if your light is not on - there may be a code. If it is not your vehicle originally, some people pull the bulb!

Posted on Jan 22, 2009

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