Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
WHat lights are illuminating on the dash or instrument cluster?
Are there any codes in the computer?
Does your vehicle die or stall on you when driving?
According to the testing machine at Advanced, yes it is charging. I'm assuming that it is not charging as much as it is drawing though because I can drive it for awhile, the car will run fine, as soon as I shut it off, the battery is dead. It never goes completely dead, just dead enough to not allow it to turn over the vehicle.
WOW! Ok... It sounds like you definitely have a electrical gremlin.
What we need ot do is find out for sure if the alternator is charging or not when this problem happens. If you were to take voltmeter and put it on your battery when this problem happens, we need to see a minimum of 13.8 volts. If there is anything less, we simple have a charging system issue. If the alternator has been replaced, we could be missing an input to the alternator causing a no start condition.
If the alternator is charging when this is happing, then we simple do not have a charging system problem going on, just a electrical issue we need to address.
Well, if this were me working on it, I would plug in a scan tool and watch the computer parameters while this happens.
If you do not have access to a scanner, I would drive it around until it acts up then just pull over, pop the hood and check battery voltage.
If the battery voltage is low when this happens, then we will need to check the inputs to the alternator. There is one plug and one big wire to the back to the alternator. Be sure that the big wire and that the wires in the plug that go to the back of the alternator have battery voltage to them.
If the battery voltage is not low, then we will need to starter checking the instrument cluster, and the other modules on the vehicle to diagnose this problem.
Thanks for the accept!
Let me ask you this... Do you have a voltmeter gauge on your dash or instrument cluster?
Sorry for the delay!
We are going to have get a voltmeter on the battery and watch the charging system voltage when this happens. If the battery voltage drops below 13.5 volts while the engine is running, the alternator is not charging. I would be willing to bet this is due to a missing alternator input.
I ended up having to take this issue to a local garage. They found that the alternator had a poor ground and then ran a jump wire from the battery to the alternator. The car has run good since.