Saturn Repair Problems? Ask a Mechanic for Answers ASAP
Hi, my name is ***** ***** is caused by the computer not recognizing the signal from the key, and will not let it run, what was the actual code you got from the computer?
they both could be related, if the alternator is not charging, and the battery gets low, it could lose the programming for the key, is the battery fully charged up right now?
ok, if you start it and it dies, if the key is left in the run position, is the antitheft light on?
ok, you said it had a P1107, there is no P1107 code for this vehicle, how are you pulling codes?
ok, it very well could be a bad MAP sensor, but that would not have anything to do with the alternaor not charging, so right now , you are not at the vehicle?
if the battery egts low, the computer can lose its adaptive memory, and the idle is the first one effected, when you get hon=me and are at the vehicle, just come back to this question, and we can test the alternator inputs and outputs, do you have a multi meter?
there should be 2 wires, the red one should have 12 volts when running, with the connector disconnected, and it should then drop to .5 volts when hooked up to the alternator, does it?
there are actually 3 wires on the alternator, one large one going to the battery, then 2 smaller wires, a red and a grey wire, they both go to the PCM, the main computer, the red wire should have 12 volts when running, if disconnected, and then when attached, should drop to about.5 volts,Tim
yes, I was looking at the 2.2 engine diagram, I apologize for the confusion, there are 2 red wires , the large post goes to the battery, via the fusible link, the small post is the one going to the computer, with the key on, and engine off, it should have 12 volts, check this with the wire off the computer, if it does have 12 volt, then connect the wire, and the voltage should drop to .5 volts, if it does not, then the alternator, if the wire does not have 12 volts wih the key on, then you need check the wire between the alt and the computer for a short to ground or an open, if the wire is good, then replace the computer, the comuter also controls the idle circuit, and could also cause the other problems,Tim
Anytime my friend, let me know,Tim