How do I test PCM - Ford Truck Enthusiasts Forums



1997-2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

How do I test PCM

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 09-25-2011, 11:40 AM
Shambelous Shambelous is offline
New User
Thread Starter
 
Join Date: Sep 2011
Posts: 5
Shambelous is starting off with a positive reputation.
How do I test PCM

I have a 2001 Exp giving a P0352 code. plug good,COP good. Hodo I test PCM?
Reply With Quote
  #2  
Old 09-25-2011, 12:56 PM
alloro alloro is offline
Post Fiend
 
Join Date: Apr 2008
Location: 0,0,1
Posts: 12,350
alloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to behold
For which cylinder did you test the plug and COP?
Reply With Quote
  #3  
Old 09-25-2011, 01:07 PM
Shambelous Shambelous is offline
New User
Thread Starter
 
Join Date: Sep 2011
Posts: 5
Shambelous is starting off with a positive reputation.
#2 which was the indicated bad cylinder with the P0352 error code
Reply With Quote
  #4  
Old 09-25-2011, 01:12 PM
alloro alloro is offline
Post Fiend
 
Join Date: Apr 2008
Location: 0,0,1
Posts: 12,350
alloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to behold
Just checking, I wasn't intending to insult. You'd be surprise at how many people get the wrong cylinder. Now back to my question, sorry I wasn't specific. What I was really looking for is the physical location of the cylinder you checked. As in which side and how far back from the front. The #2 is the second one back on the passenger side. Is that the one you checked?
Reply With Quote
  #5  
Old 09-25-2011, 01:19 PM
Shambelous Shambelous is offline
New User
Thread Starter
 
Join Date: Sep 2011
Posts: 5
Shambelous is starting off with a positive reputation.
Didnt mean to be a smart ***. Im relatively new to working on engines and just wanted to give good info. I checked the 2nd cylinder back on the passenger side. COP is good and new plug. there is a problem with the connector coming off harness in that the clip mechanism is broken so connector is not locked in.However when I manually held connection tight while the engine was running no improvement was apparent with rough idle.
Reply With Quote
  #6  
Old 09-25-2011, 01:52 PM
alloro alloro is offline
Post Fiend
 
Join Date: Apr 2008
Location: 0,0,1
Posts: 12,350
alloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to behold
Quote:
Originally Posted by Shambelous View Post
I manually held connection tight while the engine was running no improvement was apparent with rough idle.
To me it sounds like your PCM is good. Based on the P0352 code I'd say you're on track with the harness connector. That code usually means that you have a connection to the COP but it's not a good one. So what you're looking to solve is a high resistance issue.
Reply With Quote
  #7  
Old 09-25-2011, 02:21 PM
Shambelous Shambelous is offline
New User
Thread Starter
 
Join Date: Sep 2011
Posts: 5
Shambelous is starting off with a positive reputation.
Ive got a 1999 crown vic. Can I clip connector of it and sodder to faulty clip on Exp
Reply With Quote
  #8  
Old 09-25-2011, 03:04 PM
alloro alloro is offline
Post Fiend
 
Join Date: Apr 2008
Location: 0,0,1
Posts: 12,350
alloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to beholdalloro is a splendid one to behold
If the clip fits, wear it!
Reply With Quote
  #9  
Old 09-26-2011, 04:54 PM
Moto Mel's Avatar
Moto Mel Moto Mel is offline
Postmaster
 
Join Date: Jan 2009
Location: Chesapeake, Va.
Posts: 4,584
Moto Mel has a great reputation on FTE.Moto Mel has a great reputation on FTE.Moto Mel has a great reputation on FTE.Moto Mel has a great reputation on FTE.Moto Mel has a great reputation on FTE.
How is the clip on the #2 injector? Is it on and tight? Be careful when working arount the COPs as they put out a very healthy jolt.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
How to test a PCM williameub 1994.5 - 1997 7.3L Power Stroke Diesel 2 07-02-2015 12:05 AM
PCM test pin locations cruzer17 1999 - 2003 7.3L Power Stroke Diesel 3 06-04-2011 10:57 PM
Temporary PCM swap?? Supertrey 1994.5 - 1997 7.3L Power Stroke Diesel 3 08-17-2010 10:37 AM
P0046 Please Help ChevyMike 6.0L Power Stroke Diesel 1 07-24-2009 06:03 PM
Testing a PCM?? cajunbull61 2004 - 2008 F150 9 02-17-2009 08:01 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
03, 1996, 1997, 1999, 2000, 42l, control, expedition, f150, f250, ford, module, pcm, powertrain, test, testing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 02:37 AM.