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| Author |
Message |
    
John Papa
New member
Username: johnpapa
Post Number: 2
Registered: 10-2009
| | Posted on Saturday, October 03, 2009 - 12:58 pm: | 
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Can someone tell me where the computer module is on a 2004 8.1? Is it under the triangular plastic cover on the top? One of my twins is running poorly and I have exausted all of the fuel issues. Thought I would switch modules to see what happens. Thanks. |
makomark
Senior Member
Username: makomark
Post Number: 1598
Registered: 09-2008
| | Posted on Saturday, October 03, 2009 - 10:21 pm: |
|
John:
Remove the cover and follow the wiring harnesses to the ends. The computer should be next to a handful of relays, all mounted on the same bracket.
You may find the stuff on crusader's www site of benefit - parts manual for one.
Possible but not likely the computer is bad. Usually it is an sensor or the interconnects between it and the computer. Swapping sensors between engines is one way to find the bad guys but not the most efficient use of time. A code reader (scanner tool) will help tremendously. |
Rick Sweeten
Senior Member
Username: linesix
Post Number: 1577
Registered: 11-2002
| | Posted on Tuesday, October 06, 2009 - 09:25 pm: |
|
An 8.1 is not the same as a 502, don't confuse the two or you'll end up with parts that don't fit. Yes, it's under the plastic cover by the rear lifting eye.
Good luck,
Rick |
John Papa
Member
Username: johnpapa
Post Number: 5
Registered: 10-2009
| | Posted on Tuesday, October 06, 2009 - 10:40 pm: |
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Thanks. I have been told by Crusader that my fuel rails may be corroded clogging injectors. They say this is a common problem with this year motor. |
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