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P1494 CEL?

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Old Aug 23, 2011 | 08:30 PM
  #1  
cf1k1's Avatar
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Joined: Aug 2010
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From: The Florida State University
Year: 2001
Model: Cherokee
Engine: I-6 4.0 L
Default P1494 CEL?

Hey y'all! When I first got my 2001 Sport in August of last year, it made the 300 mile drive back home fine, with no issues at all. I wasn't really into this whole CF, actually, didn't even know about it. Anyways, after about 3 days of casual driving (still on my permit then so it'd get driven to school, then back home with the old man) I got this check engine light saying P1494. I chased it for 4 days, then it mysteriously went away. Now, suddenly, It's back again. My Innova CEL reader is saying it's a "leak detection pump pressure switch or mechanical fault" which y'all can clearly see in the picture. Any help on this one?
Attached Thumbnails P1494 CEL?-p1494.jpg  

Last edited by cf1k1; Aug 23, 2011 at 08:32 PM.
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Old Sep 27, 2011 | 12:51 PM
  #2  
Johnny9Inches's Avatar
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Joined: Jun 2011
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From: Salamanca NY
Year: 2000
Model: Cherokee
Engine: 4.0 IL6
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Did you ever figure out what this is because I have it too...
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Old Sep 27, 2011 | 01:27 PM
  #3  
Cherryokee's Avatar
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Joined: May 2010
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From: Boston
Year: 2000
Engine: 4.7L
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Check the chat. I just gave guidance on same...
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Old Sep 9, 2012 | 08:19 PM
  #4  
casicua's Avatar
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Joined: Jul 2012
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Model: Cherokee
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Had the same issue last week, mine was the rubber 90 degree elbow connector between a vacuum line and the intake manifold. It was all cracked. I replaced it with a generic pcv connector from autozone and cleared the code, and it seems to be fixed.
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