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2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Is my new ECU the problem?

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Old 06-29-2013, 12:00 AM
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Default Is my new ECU the problem?


Replaced ECU and it cleared the P code, ran fine for twodays. On day three after driving 25minutes shut down came back 5 min. later won’t start. Came back next day started fine. Today, drove 25 min. shut down, 10 min laterwon’t start.

I read all the problems on the forum. Clean the IAC and TBwould be my first step. If this does notwork, how do I isolate whether or not it is the ECU?
Thanks for any help

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Old 06-29-2013, 12:17 AM
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Sounds like a faulty wire, like maybe a short in the wiring. Or maybe the harness is not making full contact to it. Check all that stuff before you drop any money in it.
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Old 06-29-2013, 07:06 PM
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is there like an internal safe mode on it? in case it gets hot? maybe its gettin to much volatage from somewhere and causes it to go into safe mode after a bit. just a thought.
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Old 06-29-2013, 07:08 PM
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Rock the PCM connectors back and forth while it's running, see if you can duplicate the problems. What was the P code before?
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Old 06-29-2013, 10:15 PM
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P0601 I will try wiggling the connectors. I'm going to try and borrow a friends PCM and swap it out the next time it wont start and see if that eliminates the PCM as being the problem.
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Old 06-30-2013, 09:56 PM
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Friends Ram is '97 so swapping the ECU won't work. I guess I'll take it to dealer have them do the diagnostic and trouble shoot the short.
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Old 06-30-2013, 10:02 PM
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Did you get the PCM from the dealer? P0601 is internal failure.
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Old 06-30-2013, 11:05 PM
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No, All Computer Resources with a lifetime warranty.
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Old 07-01-2013, 09:51 AM
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What's missing when it won't start?
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Old 09-02-2013, 09:41 PM
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Default >>Update<<

The company out of Florida set me a replacement ECU and that fixed the problem. I wanted to wait a while to make sure it had no issues.

The Dodge dealer said it was reading -50 deg. after it warmed up, so it was sending an excessive amount of fuel causing it to flood. Not bad $100.00 diagnostic fee and $240.00 for a replacement ECU. Still ahead $760.00!
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Old 09-02-2013, 09:41 PM
 
 
 
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