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Reman IDM?

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Old May 3, 2011 | 07:15 AM
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Reman IDM?

Has anyone used a reman IDM? There is a place on Ebay that has them for 139 dollars. I ran a buzz test on my truck the other day and they all sounded the same but at the end of the test I got a code P1298 IDM fail. On the cylinder contribution test I got two codes P0275 Cylinder 5 Balance and P1670 EF feedback not detected. Talked to the Ford dealership and the service manager told me that the IDM was bad and that he had seen IDMs fail and create a miss? Replace the IDM and that would fix my problem. Anyone else had this problem? Or is there something else I need to be looking for?

Steve
 
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Old May 3, 2011 | 07:36 AM
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Have you ruled out the UVCH or the wiring between the IDM & engine? They are much more common failures...
 
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Old May 3, 2011 | 07:49 AM
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I had the VC off and done the clip mod and re torqued the rockers and injectors. One side had a new harness under the VC on the pass side I think. The book at the dealer said the P1670 code to check wires? but I didnt get it wrote down. Should have made a copy of it.

Steve
 
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Old May 3, 2011 | 07:53 AM
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Is there a place on the net to look up the codes and what to check? Dont like driving to town to look at the book.
 
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Old May 3, 2011 | 09:17 AM
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Look at this before you condemn the IDM:
GB Tech Bulletin 103 Ford IDM Module Replacement[1][1].pdf
 
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Old May 4, 2011 | 07:06 AM
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Thanks Roland I will do that test this weekend.
 
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Old May 9, 2011 | 07:19 AM
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Ok Roland, I tested the wiring as shown in the bulletin. Got all 2.1 ohms on right bank, 2.4 to 2.9 on the left bank. It passed test 2 and 3 also. Anything else to test before I shell out the greenbacks for a IDM?

Thanks
Steve
 
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Old May 9, 2011 | 08:26 AM
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Other than swapping in a known good IDM, you've pretty much narrowed it down. Do you have an early or late '99?
 
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Old May 9, 2011 | 08:35 AM
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It was manufactured on 11 98 so its a early 99?
 
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