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lupe moreno
New User
Oct 2, 2010, 2:13 PM
Post #1 of 9
(2013 views)
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2004 dodge intrepid w a 2.7 shuts off after driving 10-15 miles let it cool for about 3hrs then it ill do it all over have replaced all coils and fuel pump
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 2, 2010, 2:21 PM
Post #2 of 9
(2009 views)
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If I were to make a wild guess it would be a crank sensor but this is the testing to find out anything for sure.
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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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.
(This post was edited by Hammer Time on Oct 2, 2010, 2:21 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 7, 2010, 1:55 AM
Post #3 of 9
(1995 views)
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Arggh! You got to catch it when down for testing. Got one that either runs new or not at all at random - not the same car.
WTF are you supposed to fix if everything is working? Codes might help with a 2004. Mine is a Fred Flintstone car - laugh,
T
(This post was edited by Tom Greenleaf on Oct 7, 2010, 2:00 AM)
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collegefreak
New User
Oct 26, 2010, 1:59 PM
Post #4 of 9
(1970 views)
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Re: headache
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i would reckon it is the crank sensor aswell you could need a new one....
CollegeFreak
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 27, 2010, 1:16 PM
Post #6 of 9
(1954 views)
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You got that right HT. Could be 100 things.
Will be soon scraping a good car as even the mabee stuff that could be wrong exceeds its value,
Tom
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chickenhouse
Enthusiast
Oct 27, 2010, 6:36 PM
Post #7 of 9
(1941 views)
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The Cavalier "beater?"
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Sidom
Veteran
/ Moderator
Oct 27, 2010, 7:29 PM
Post #8 of 9
(1937 views)
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Uhhhhhhhh CH........."beater" is old school........ I believe the current PC correct term is "hoopty"..............
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chickenhouse
Enthusiast
Oct 28, 2010, 7:55 AM
Post #9 of 9
(1927 views)
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C'mon, you just made that up! I've never heard of hoopty unless it was indluded with a do! I think T called it a beater himself!
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