1995 f250 ignition
1995 f250 ignition
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Your truck is not wired for a gray one. All the auto part stores (and some Ford dealers) computers are wrong and they will try to sell you a gray one.
The Gray one will set codes in your computer and not run as well.
The Black one is a CCD ICM and a Gray one is a push start ICM.
All 1994 and newer F-series trucks take the Black one.
The Gray one uses a start wire from the starter relay and your truck does not have one running to the ICM. With the Gray ICM Ignition system the IDM to the computer comes from the Ignition Coil Tach (-) side through a resister.
The Black ICM makes the IDM and sends it to the computer.
You can get a Black ICM at any auto parts store just tell them you have a 1995 Mustang.
For more information read DOMESTICALLY SPEAKING in the PDF I have posted below.
The Gray one will set codes in your computer and not run as well.
The Black one is a CCD ICM and a Gray one is a push start ICM.
All 1994 and newer F-series trucks take the Black one.
The Gray one uses a start wire from the starter relay and your truck does not have one running to the ICM. With the Gray ICM Ignition system the IDM to the computer comes from the Ignition Coil Tach (-) side through a resister.
The Black ICM makes the IDM and sends it to the computer.
You can get a Black ICM at any auto parts store just tell them you have a 1995 Mustang.
For more information read DOMESTICALLY SPEAKING in the PDF I have posted below.
FTE Chapter Leader
Joined: May 2006
Posts: 11,273
Likes: 99
From: North Dakota
Here's a quick question than, IF I'm timming my pickup, the timming mark hits smooth and in the same spot with the spout conector out, but put the spout conector in, it jumps around a bit. (if I explained that good enough) Would that be the Ignition Module cousing problems?
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
No that is how it should work. The change is coming from the PCM Computer through the SPOUT wire to the ICM.
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FTE Chapter Leader
Joined: May 2006
Posts: 11,273
Likes: 99
From: North Dakota
So its normal for it to jump around a bit at idle with the spout conector in?
I would have thought it would be smooth all the time..
I would have thought it would be smooth all the time..
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Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Sorry I misunderstood you.
Yes it should be relatively steady but will move from the 10 Deg spot on the pointer when the SPOUT is put back in.
Bouncing around could be anything from bad bushings in the Distributor to an engine miss.
Yes it should be relatively steady but will move from the 10 Deg spot on the pointer when the SPOUT is put back in.
Bouncing around could be anything from bad bushings in the Distributor to an engine miss.
FTE Chapter Leader
Joined: May 2006
Posts: 11,273
Likes: 99
From: North Dakota
Well the Distrubutor is new, as is all the igntion componets(plugs, wires, cap, rotor.)(less than 4,000 miles an total rebuild) except the module on the fender.
Could that be part of the issue?
Could that be part of the issue?
New User
Joined: Jan 2011
Posts: 8
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Black PCM
I had the grey PCM troubles with my 96 F-150. I replaced everything including the brain and sensors. I then found information on the internet regarding the parts book being wrong. After spending all that money, what was another 60 bucks. Switched to the black one and bingo dash light went bye bye. I hope this helps somebody else.
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