Car won't start. Battery appears ok.

allstarrallstarr Member Posts: 1
edited July 2023 in Ford
I have a 1990 Ford T-Bird. My car has been having starting issues for a while. I'm not sure if the seat belt light being on whenever I have the car on is part of the issue, or not. Note that it's on, even though I have it buckled.

When using Cen-tech digital multimeter, it reads 12.5 - 12.7.

Earlier today, I hooked up a Everstart 750a jump starter. Once red and black clamps were applied, and I turned the Everstart on, the engine icon keeps flashing. Doesn't become solid. It reads 12.7 - 12.9 v. All 4 battery bars are full.

Overhead light comes on when reattach battery, and re-enter the car. However, the check engine light comes on for a second, and other lights, then all goes out. OR it doesn't come on. Makes a clicking noise.

From this, it indicates that the battery seems to be ok. Alternator? Starter?
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