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Engine Ligth blinking/flashing
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dhbey
Novice
May 4, 2014, 1:34 AM
Post #1 of 12
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Engine Ligth blinking/flashing
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2006 Chrysler PT Cruiser
2.4L engine size.
My car is jerking and the engine light comes on blinking/flashing, then the light stays on for a second or two, and goes back to blinking/flashing. I stopped at Advanced Auto and had them to dx the engine light, and the code is PO339 Crankshaft Position Sensor Intermittent. How do I know what is causing the code? I don't mind getting the crankshaft position sensor replaced, but what about the cause? Last year, I had the PO340 code and had that fixed. Please advise me how to proceed. Thanks.
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Discretesignals
Ultimate Carjunky
/ Moderator
May 4, 2014, 2:40 AM
Post #2 of 12
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Re: Engine Ligth blinking/flashing
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You won't know what is causing the code unless you diagnose the problem. Do you have any test equipment and knowledge of repairing drive-ability problems?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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kev2
Veteran
May 4, 2014, 2:43 AM
Post #3 of 12
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Re: Engine Ligth blinking/flashing
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only 1 code - P0339 ? I think there are more codes....
2 thoughts -
1) did you get the CMP from Chrysler?
2) blinking CEL - do a fuel pressure and pressure leak down test- an abundance of caution Ck eng oil
A scanner will make this easier - look at FT's and the CMP voltages...
(This post was edited by kev2 on May 4, 2014, 3:56 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
May 4, 2014, 2:53 AM
Post #4 of 12
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Re: Engine Ligth blinking/flashing
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I would expect there to be more codes in there. I wouldn't expect the P0339 to cause a flashing CEL.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dhbey
Novice
May 4, 2014, 9:50 AM
Post #5 of 12
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Re: Engine Ligth blinking/flashing
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@ Discretesignals
No, I don't have any testing equipment or knowledge of repairing drive-ability problems.
(This post was edited by dhbey on May 4, 2014, 9:57 AM)
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dhbey
Novice
May 4, 2014, 9:56 AM
Post #6 of 12
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Re: Engine Ligth blinking/flashing
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@ kev2
That was the only code that was given to me, not from Chrysler but from Advance Auto. I thought it might be the engine oil too b/c I just got an oil change, and my car sounded "rough"under the and next thing I know, the engine light started blinking and car stalling. Just lastnight, I was accelerating, and it went out (internal and external lights still on), but I had to restart the car and drove with the CEL still blinking.
(This post was edited by dhbey on May 4, 2014, 9:58 AM)
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Hammer Time
Ultimate Carjunky
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May 4, 2014, 10:38 AM
Post #7 of 12
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Re: Engine Ligth blinking/flashing
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CEL lights only blink when the computer sees a misfire severe enough to damage the catalytic and that usually coincides with a misfire code being stored in the computer.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dhbey
Novice
May 4, 2014, 11:27 AM
Post #8 of 12
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Re: Engine Ligth blinking/flashing
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@ Hammertime:
I just got back home from having a dx again. This time my CEL was not blinking, but it remained on. During the dx, the misfire code was reported as pO300. Does this help?
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Hammer Time
Ultimate Carjunky
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May 4, 2014, 11:31 AM
Post #9 of 12
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Re: Engine Ligth blinking/flashing
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That code isn't going to be much help because it's not very specific. It just means "Random Misfire" without identifying a specific cylinder or cylinders.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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kev2
Veteran
May 5, 2014, 6:55 AM
Post #10 of 12
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Re: Engine Ligth blinking/flashing
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I suggested checking engine oil - to see if fuel is accumulating in the oil pan, sometimes the result of a injector*
issue and very damaging ....
* flashing CEL.
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Discretesignals
Ultimate Carjunky
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May 5, 2014, 7:25 AM
Post #11 of 12
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Re: Engine Ligth blinking/flashing
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If your getting a crank sensor intermittent code, you really shouldn't dive too deep into troubleshooting misfire codes and focus first on the crank sensor code. A faulty crank sensor signal can cause erronious misfire codes to show up. A failing crank sensor or screwy crank sensor signal can also cause misfiring, no starts, and stalling. Just a heads up.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on May 5, 2014, 7:27 AM)
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dhbey
Novice
May 7, 2014, 12:23 AM
Post #12 of 12
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Re: Engine Ligth blinking/flashing
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@ Discretesignals
The no start is exactly what I experienced Monday night. I was strained at Walmart. I left the car there for 2 hours, came back to get it and drove it straight to the shop. They fixed the crankshaft issue, yesterday. I should be good to go this morning.
Thank you all for your knowledgeable input. I was able to communicate to the correct people what I needed. Thanks!! Have a great day!
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