upgrades and computer question
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Junior User
Joined: May 2008
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From: Buffalo N.Y.
upgrades and computer question
I have a 97 f-250 with a 460 and e4od trans. I added a cold air intake, MSD coil, cap and rotor, throttle body spacer, and I was wondering if that affectes the computer any. Do I have too reset it and how. I am using a stock ignition module....and am getting code P1351 and P1359. Does this mean the coil is putting out too much for stock module? Bothe codes are for circuit malfunctions. I did have many problems with the truck not starting after driving. What do you think could be the cause of these codes. Thanks
Posting Guru
Joined: Sep 2004
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From: Yokosuka, Honshu, Japan
Is yours a distributorless ignition? I am guessing not since you said coil and not coil packs. I am guessing that there is either a bad ignition module or a loose connection somewhere. Using a 'hotter' coil doesn't normally affect an electronic ignition to my knowledge. I'll put what the codes mean for others' input:
P1351 Ignition Diagnostic Monitor circuit Input fault
P1359 Spark Output circuit fault
'Resetting' the computer and clearing fault codes should be able to be done with your code scanner, the only other way I know of on most vehicles is to remove the battery negative cable and let it sit for a while and then re-connect it.
P1351 Ignition Diagnostic Monitor circuit Input fault
P1359 Spark Output circuit fault
'Resetting' the computer and clearing fault codes should be able to be done with your code scanner, the only other way I know of on most vehicles is to remove the battery negative cable and let it sit for a while and then re-connect it.
Posting Guru
Joined: Oct 2005
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From: Longwood, Fl
I'll just throw in .02----
I guess the OEM coil was an "E" coil. Did you replace it with an MSD E coil? Reason is that the new coil may draw a lot more amperage to develop a hotter spark. I dont know if the 97 electronics will have a problem with that or if it will see the extra current draw as a problem. Someone may need to research the meaning of those code carefully. On earlier coils, it was sometimes necessary to use an extra resistor in the circuit for that reason-----that may or may not apply now. LOL
I guess the OEM coil was an "E" coil. Did you replace it with an MSD E coil? Reason is that the new coil may draw a lot more amperage to develop a hotter spark. I dont know if the 97 electronics will have a problem with that or if it will see the extra current draw as a problem. Someone may need to research the meaning of those code carefully. On earlier coils, it was sometimes necessary to use an extra resistor in the circuit for that reason-----that may or may not apply now. LOL
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Junior User
Joined: May 2008
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From: Buffalo N.Y.
thanks guys....im stumped too....someone in another forum said something about the modules with a grey cover and a black cover...that the grey cover ones may cause a fault....for some reason...I dont know.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Yes.. the black vs grey ignition module issue has come up on just about every Ford forum, you must use a TFI module that is the same color as the original, there are internal wiring differences between the grey and black modules that will create open circuits and throw codes.
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Yes.. the black vs grey ignition module issue has come up on just about every Ford forum, you must use a TFI module that is the same color as the original, there are internal wiring differences between the grey and black modules that will create open circuits and throw codes.
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Junior User
Joined: May 2008
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From: Buffalo N.Y.
thanks a lot dutch and con...excellent information.....I really appreciate it cause I do have a grey one in now.......now just gotta find a black one....would yous happen too know if aftermarket ones are ok....like acell is got one for 70 some bucks...but dont want too run into the same problem. My local dealers dont have or cant get that module. Thanks again..you guys are the best...ill let you know what happens
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