2004 Dodge Neon Idle Shake and Stall

DODGE NEON
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SERGIOF576
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I own a 2004 Dodge NEON (SX 2.0) & recently being experiencing some strange behavior at random times. My engine will start to shake while I'm idling waiting at signals lights occasionally stalling. I've taken it into the 2 different dealer shop with no luck in finding a problem. Does any have any ideas what might be causing this? :?

SPARK PLUGS need changing?
Problem with the Fuel Injectors?
Jan 26, 2007 at 9:32 AM
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SERVICE WRITER
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Were there any codes pulled from the computer?
How many miles on it?
Jan 26, 2007 at 12:26 PM
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SERGIOF576
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There were no codes pulled from the computer. They said everything looks normal.
It has about 23500 miles.
Jan 26, 2007 at 2:25 PM
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SERVICE WRITER
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That's odd for as few miles as it has on it. No, I don't see a plug or injector problem, or wouldn't expect it anyway. I would be curious if the computer has the latest calibration update. :?: I would also be curious if it is still under warranty. Some unethical dealers can't find a problem until it's out of warranty :evil: Odd there are no codes.
Jan 26, 2007 at 2:31 PM
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SERGIOF576
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I agree, I think I'm going to contact Chrysler Warranty Department and see what they will say.
Could it be the air bypass valve?
Throttle position sensor?
Jan 26, 2007 at 3:37 PM
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SERVICE WRITER
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The only way I can think of to find this problem is to have a scanner hooked up to it that can read the data stream. When the problem happens, the scanner can record the dis function and then the data stream can be anaylzed. Your better off going to an independant if you don't have luck with the dealer. The dealer Techs don't get paid enough time to diagnose and often revert to a guess, or couldn't find anything kind of answer.
The key to finding a shop is one that has the scanner able to do this and the guy that is capable of reading the data stream and interpreting it.
Jan 26, 2007 at 9:21 PM

Suggested Repair

Have a shop with a capable scanner record the data stream when the idle shake or stall occurs and analyze it. Also check whether the computer has the latest calibration update. Plugs and injectors are not the expected cause given the low mileage and lack of codes.

Conversation Summary

A 2004 Dodge Neon with about 23,500 miles shakes at idle and sometimes stalls, but two dealers found no codes or obvious faults. The owner asked about spark plugs, fuel injectors, the idle air bypass valve, and the throttle position sensor. The expert did not expect a plug or injector problem and recommended checking for a computer calibration update, confirming warranty coverage, and using a scanner that can record the data stream during the fault, preferably at an independent shop equipped to interpret it.

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