I Have a 1993 Pontiac bonneville and it wont stay running, I have a new battery 1/2013. I jump it and let is run for a while but once i start driving if it stalls . it wont start again unless jumpped? Is it my alternater?

Asked by Dec 13, 2013 at 04:26 PM about the 1993 Pontiac Bonneville 4 Dr SE Sedan

Question type: Maintenance & Repair

I have a new battery 1/2013. I jump it and let is run for a while but once i start driving if it
stalls . it wont start again unless jumpped?  Is it my alternater?

1 Answer

114,255

Yes it sounds like your alternator might be bad. Check voltage from alternator while car is running it should be putting out around 14 volts. First check all battery connections to make sure that they are clean and tight. Also the negative connections on frame and motor. If alternator is not charging to proper voltage remove it and have it tested.

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