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97 neon stalls and wont start until cools
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hurrysundown
New User
May 25, 2010, 3:42 PM
Post #1 of 6
(1735 views)
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97 neon stalls and wont start until cools
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97 dodge neon 2.0 sohc auto w/ac
service engine light came on car then stalled ...scanned and came up egr valve bad changed valve light went off..still stalls checked fuel pump pump good checked for spark no spark ..pulled coil pack coil cracked on bottom changed coil pack still stalls no codes come up any ideas?????
thanks tom
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Sidom
Veteran
/ Moderator
May 26, 2010, 9:48 PM
Post #2 of 6
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Re: 97 neon stalls and wont start until cools
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When it stalls you need to see what you lost spark or fuel...... Depending on what you find will tell you where to look next.......
What exact code # did you have before.....
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hurrysundown
New User
May 27, 2010, 1:13 AM
Post #3 of 6
(1724 views)
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Re: 97 neon stalls and wont start until cools
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it lost spark ... cant remember code ...egr flow restricted
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Sidom
Veteran
/ Moderator
May 27, 2010, 9:57 PM
Post #4 of 6
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Re: 97 neon stalls and wont start until cools
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Next I'd probably look at the cam & crank sensors. Make sure they have ref voltage, good ground and a signal while it won't start.
Just out of curiousity, how did you check for the no spark condition?
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hurrysundown
New User
May 28, 2010, 1:20 AM
Post #5 of 6
(1716 views)
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Re: 97 neon stalls and wont start until cools
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pulled a plug and turned over to check for spark
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nickwarner
Veteran
/ Moderator
May 28, 2010, 1:50 AM
Post #6 of 6
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Re: 97 neon stalls and wont start until cools
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You didn't say if you had spark or not. But you are way better off with an inline spark tester to check for the spark. From what you said and Sidom mentioned, a crank position sensor is a likely culprit. If you lack the ability to scope the sensor to see if the signal is erratic, I would ask if your car has a tach. If so, and when it refuses to start, look to see if it will move the tach while cranking. If not, you know its the crank sensor. You could just change the sensor, and without having actual verification by scope or scanner its no guarantee. Those of us in the trade don't do much without verification, but the tools to do so are much more costly than trying the most likely suspect. But don't just throw parts at problems. You can read in other posts where they say they have replaced $400 or better in sensors and other parts to still have the same issue. This would be a situation where I would risk the money to put a crank sensor in and figure it would work. But if you know someone with a scanner that can view live data have them hook it up when it won't start and look at the RPM reading. This way you can see what the ECM sees at the time it sees it.
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