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Old Jun 7, 2011 | 10:34 AM
  #1  
rangerfan93's Avatar
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Year: 1995
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Engine: 4.0L I6 H.O. 242
Default PCM question

Does the 1996 jeep Cherokee sport have a separate PCM or is it built into the ecu? If it does have a PCM where is it located?
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Old Jun 7, 2011 | 10:52 AM
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I always figured ECU was usually called a PCM here. Didn't think there was a difference.


ECU is Engine Control Unit, yes? What's PCM?
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Old Jun 7, 2011 | 11:56 AM
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Powertrain Control Unit
Engine Control Unit
same things, Chrysler also calls it the SBEC, or Single Board Engine Controller
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Old Jun 7, 2011 | 11:57 AM
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Originally Posted by Bustedback
Powertrain Control Unit
Engine Control Unit
same things, Chrysler also calls it the SBEC, or Single Board Engine Controller
There ya go. That's what I assumed, but you know what they say when you assume...
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Old Jun 7, 2011 | 12:32 PM
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Ok thanks. Looks like my ecu is messed up then. Looks like I'll be needing a new one of them
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Old Jun 7, 2011 | 12:35 PM
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What makes you think it's bad?
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Old Jun 7, 2011 | 12:39 PM
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Originally Posted by Bustedback
What makes you think it's bad?
X2

Not a common issue, and can easily be confused.
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Old Jun 7, 2011 | 12:45 PM
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The ecu doesn't tell the efan to turn on when the temp goes over 220F. Ive gone through every possible problem (relays, fuses, new temp sensor, wiring). So it must be thy the computer doesn't send a signal to turn the efan on
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