Hi all I have a pontiac Bonneville 1997. Recently the car was stalling also engine looked unballanced and stall. Battery is draining when car is off although the battery is only 3 months old

Sorry Toni, there are too many possibilities associated with your symptoms. There might be an intermittent electrical problem causing all your symptoms. But that is going to take a good independent shop to locate.

Yes, noticed that. That’s why I was thinking intermittent electrical. But with a carbureted engine with primitive pollution controls could be unrelated to the battery drain. Vacuum leaks, fuel delivery, primary wiring? Some joker may have even cross wired some plugs.

[image] Purebred: But with a carbureted engine with primitive pollution controls could be unrelated to the battery drain. 1997…I don’t think it had a carburetor. I doubt the pollution control was that primitive too

[image] pyrolord314: 1997…I don’t think it had a carburetor Yeah I think carbs had been gone for ten years by then. So much for professional advice. Best to take it to a shop to look for a drain on the battery. That’s what shops do.

OP must have edited it, originally listed as a 77 Or my eyesight is failing…

Even without the stall, how does an engine look unbalanced? Three cylinders on one side and two on the other?

For the battery draining problem you need a phantom-current draw test. Anything over 50 mA indicates there may be a problem. For the stalling, possible misfiring, start with checking the diagnostic codes stored in the computer’s memory. Before going down these paths suggest to first clean and…

Hi all thank you for sharing your thoughts. I meant by unballanced engine is that when engin is running idle u feel it is shaking and not running smoothly. I have changed the spark plugs myself and also the wires. Found 2 of the wires badly damaged and “sparking” all over when engine is on. Thus i…

Sorry it is 1997 lol… Fuel injection system for sure

Pontiac Bonneville 1997 battery

Maintenance/Repairs

oldtimer-11 December 31, 2018, 5:27am 3

I am still trying to get past"engine looked unbalanced and stall".

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Pontiac Bonneville 1997 battery

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