Jump to content
Forums Gone... but not forgotten!
Pontiac of the Month

2 Firebirdz's 1976 Trans Am

2024 November
of the Month

  • Rev up your passion for Pontiacs and join our vibrant community of enthusiasts!

    Whether you're a die-hard fan of classic muscle cars or you've got a soft spot for sleek modern models, you've found your home here at Forever Pontiac. Our community is dedicated to celebrating everything Pontiac, from the iconic GTO to the legendary Firebird and everything in between.

    Unlock access to expert advice, stunning photo galleries, engaging discussions, exclusive events, and more!

    Start your Pontiac journey with us today!

    Sign up now! 🏁

Fiero Battery drain


Recommended Posts

We killed the battery in the car. I think it was because the cigarette lighter was partially pushed in and I know that it was broken to begin with.

I did a leak down test with the battery.

Ignition was off.

All switches were off. and doors closed.

I am still getting a constant drain of 0.13 A at the battery.

Is this about normal for a computer controlled vehicle with an aftermarket stereo with a memory?

Link to comment
Share on other sites

Tired of these Ads? Register Today!

We killed the battery in the car. I think it was because the cigarette lighter was partially pushed in and I know that it was broken to begin with. I did a leak down test with the battery. Ignition was off. All switches were off. and doors closed. I am still getting a constant drain of 0.13 A at the battery. Is this about normal for a computer controlled vehicle with an aftermarket stereo with a memory?

.13 is alot bro. Had a .02 in the Sunbird and that would kill the battery in 4 days if not started/run. Finally found it was the AMP gauge in my engine compartment making slight contact. There's a guy by me with 2 Fiero's for sale. 1000/best 1800/best they both look in good shape. Busted rear side window in one. Hard to tell more without stopping

Link to comment
Share on other sites

I agree that .13A is a lot. Can you unplug the radio or remove the fuse and then do your leak down test again? That would at least let you know if it is the radio (or how much the radio is contributing to the .13A). You could repeat the same steps with other fuses to help identify the offending circuit. Electrical problems are the worst kind of problems to diagnose and solve.

Link to comment
Share on other sites

So I figured it out. One the origonal battery we bought the car with was 9 years old. Second the cigarette lighter got stuck in so it was drawing current for three days straight. The radio goes through a reset proceedure every time you cut then add power. This takes about 10 seconds. I should have used aligator clips and not just the probes that I have. I verified this because the truck has the same radio. Once the reset occurs then it drops to between .03 and .02A Which is in line for the Fiero service manual that I found.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Tired of these Ads? Purchase Enhanced Membership today to remove them!
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.