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Originally Posted by bsschmitz
I have a 93 Buick Lesabre that stalls after running for about 10 minuets. I replaced the fuel pump and fuel filter w/ no joy. When I turn the key to on position I get gas right before the injectors. I was able to get the codes 17 and 58 by grounding out pins a and b on the computer terminal and watching how many times the lights blink. I think it might be the camshaft sensor but am not sure if it is and how to test if that is the problem . Any help would be great
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Code 58 is the pass key system. Because your car starts with this code stored, it should not have anything to do with your stalling. Why? Because your car's PCM is designed to ignore the lack of a fuel enable signal from the pass key module when a code 58 is set [assuming it is set while the car is running!] and allow the car to run anyhow (Code 58 is set when there is a loss of proper resistance reading of your pellet on your key in the ignition). There is a test to find out if you have either an intermittent problem or a faulty PCM. First, clear the code by unhooking the battery for 30 seconds (or unhooking the PCM fuse). Second, try to start the car. If the car does not start, it generally means your PCM has NOT received the fuel enable signal. If so, you have either a bad connection to your PCM or Pass Key Module, OR you have a loss of power or ground to your Pass Key Module. To properly diagnose the code 58, subscribe to alldata.com and do the tests for a code 58.
Code 17 is the Spark Reference Circuit. Basically it means that a signal is used by the PCM below 1200 rpm to better control ignition timing. I do not know if a lack of this signal could result in stalling. But it seems from my reading that neither code you have would result in stalling. Perhaps some more basic tests are needed:
Fuel correct?
Spark correct?
Crank sensor working correctly?
Ignition module correct?
There are many things it could be and you need to see a good mechanic to find the true cause.