Question about 1996 Pontiac Bonneville SE CA Value

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My 1996 bonneville is misfiring...had autozone run a codes test on it and it came up with several but one was the crankshaft sensor.....i was wondering if i should just have this part installed or are there any other things i should try first.....my car is stalling and popping and will die if i come to a stop any suggestions on what i should try first?

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A faulty crank position sensor will cause these symptoms -- I'd say replacing it is reasonable.

Charlie

Posted on Mar 27, 2011

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The 4 cylinder engine in your 1996 Saturn SL doesn't use a cam sensor. I know, then how could there be a code for the cam sensor? Well, The electronic ignition (EI) module supplies a signal to the PCM whenever it determines that the #4 cylinder fired on its compression stroke.

You should start by checking to make sure your spark plug wire terminals on the ignition coils are not corroded. Using a multimeter, check the resistance and continuity of each ignition wire. If your car is misfiring, replace your spark plug wires and have the code cleared at your local AutoZone or Advance Auto, unless you have a code scanner.

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This site may help:
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I have a 1996 328is. After you run the engine at about 2500 rpm for a couple of minutes, it will misfire, and the reason for the misfire is it looses injector pulse to a cylinder. If you turn the car off...


The 1st thing u need to do here is run a trouble code test on the engine control system, it is called an OBD 2 trouble code test, but based on the symptom it sounds like u either have a defective camshaft or crankshaft position sensor, these sensors signal the PCM (powertrain control module) when the cylinder should receive spark and when the injectors should fire, if the signal is erratic or just stops all kinds of weird things happen, erratic fuel injector pulse for sure, but as I 1st stated a trouble code test is needed to pin down the sensor, if no codes exist hen it is poss the PCM is defective.

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93 bonneville dies


check the ignition control module and the crank sensor. the way it sounds is the module you can have it tested once you remove it crank sensor a little harder and can not be tested. mounted behind crankshaft pulley.

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the code you have is for a misfire on #3 cylinder. (im sure you knew this right?). the crankshaft position sensor will not cause one individual cylinder to misfire. what i typicaly do in this scenario is switch the ignition wire off of the guilty cylinder onto a known good firing cylinder and see if misfire moves to the other cylinder. i repeat this process by switching the spark plug and finaly the fuel injector. a compression check may be in order as well (but not a likely cause) unless you have access to a tech 2 (gms diag computer) you will need to clear this code after each component is moved and see if you get a new code ie :p0304 if switched to #4 cylinder..other wise if you do have access to a computer that has a misfire chart in its features you can quickly identify the guilty component. as i side note the ignition coil may also be faulty, but i believe your vehicle has a 3.8liter meaning that it has a coil pack....switch the others i listed and see ow you make out....good luck!

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