QuestionQUESTION: We have replaced the coil pack, cam shaft sensor, crankshaft sensor and the egr valve and are still not getting the car to start. Car turn over but wont start. Tried testing and not getting a spark from the coil to the plugs any help is greatly appreciated we have now put several hundred dollars in and still not starting.
ANSWER: Hi Steph,
What is the year, make, model, body style, engine (L) of the vehicle? I would like to look into the wiring of the ignition system so need to know more about the specifics. Also, was there any 'history' to this problem when you first couldn't get it to start? Thanks for any more you can tell me.
Please read the PS below.
Thanks,
Roland
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QUESTION: Sorry about that I had typed a question to you and lost the page before submitting then forgot the important stuff when I retyped.
I have a 2000 cirrus 4cyl 2.4. The check engine light came on and I had the codes read at autozone. it said it was the egr valve and the cam shaft sensor. Replaced the egr valve first car ran for 2 days then one morning wouldn't start. Husband then replaced the cam sensor and crankshaft sensor it started and ran for a day or so and went out and it wouldn't start. So we then replaced the coil pack and still nothing
AnswerHi Steph,
First check fuse 5 in to power distribution box in the engine compartment as that powers the spark coil and the powertrain control module. Look carefully at its internal wire to be sure it doesn't have subtle crack in it. Then when you turn the key to the 'run' position listen for the fuel pump to run for about 1 second with a hum coming from the fuel tank.
It should hum again when you try the starter but it might be difficult to hear over the noise from the starter motor. Let me know if all that 'passes'.
Then check for 12v to be present on the dark green/orange wire of the coil pack while you are cranking over the engine. If that passes then the cam and crank sensors are OK. If not:
The next possibility is that either the cam or crank sensor is not working. Ask your husband to check the signals from both sensors. To do that put a voltmeter between the signal wire and the sensor ground wire, put the key in the run position, then turn the crankshaft by hand using a socket and bar on the crankshaft pulley bolt. Observe to verify that the voltage on each sensor oscillates between 5 and 0.3V several times per engine rotation. The common ground pin is 43 at the pcm (black/light blue, while the cam sensor signal on pin 33 (tan/yellow) and the crank sensor signal is on pin 32 (gray/black).
Let me know what you learn.
If you would rate and nominate me for this answer I would be most appreciative.
Roland
