Gray vs. Black CPS test
Thread Starter
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I don't think so Danny. I ran the gray one for about 45k in my truck and the OA's I had all came back good.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
been so busy with my truck i missed some threads..good job Chris..that is about what i found with my CPS as well..made my truck run better as well.. i got my CPS right at IH part# 1821720C99 but i paid 100 bucks..didnt think to look at Jody and Diane for one....
Elder User
Joined: Sep 2007
Posts: 895
Likes: 0
From: Lenhartsville PA
I got a blue one from Int. almost 2 years ago when to factory black one left me sit along the road, before the recall. I told them mine was black, the said, when they replace them they always put the blue one in! Runs great so far, no problems! Just wondering if anybody did a test with the blue CPS in there? I have a grey one as a spare, never installed it yet! I hope its ok to have the blue CPS in there!! Also in the past few months my #8 inj. is alot louder, much louder! Don't know why...........
Posting Guru
Joined: Nov 2006
Posts: 1,059
Likes: 0
From: Herndon KY
essentially it means that the cyldinder is not "timed" correctly...many causes but the cps cause I believe is because the timing for the injector signal is different. Rumor from diane is that ford is creating a new flash to address the grey cps issue....they are all over it....
Smokin
Joined: Jun 2006
Posts: 8,849
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Agreed, I have a spare grey I spent $25 or something. Not worth the drive to the dealer.
Postmaster
Joined: Sep 2004
Posts: 3,916
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From: Bellingham, WA
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
After reading all the issues that seem to come from the Gray CPS on some trucks, I've been monitoring my truck with the AE scanner. I've had the gray CPS for about 45,000 miles and have had NO noticeable issues with my truck. According to AE, the rotational velocity has been high on cylinders #3 & #8, and they would fail the cylinder contribution test, but again, no noticeable issues from sitting in the drivers seat.
I ordered a black IH CPS from DP-Tuner and stuck it in, taking readings on AE before and after. Both numbers came with EOT above 170 deg.
Rotational Velocity %
Cylinder 1 Gray 0.2 Black 0.2
Cylinder 2 Gray 1.1 Black 1.3
Cylinder 3 Gray 1.9 Black 0.1
Cylinder 4 Gray 0.4 Black 0.6
Cylinder 5 Gray 0 Black 0
Cylinder 6 Gray 0 Black 0
Cylinder 7 Gray 0 Black 0
Cylinder 8 Gray 2.8 - 3.5 Black 0.4
The gray CPS failed #3 & #8 on the CCT. The black one passed all cylinders. I'll see if I notice any SOTP feel after I get a few miles on it.
This info may vary with different trucks, but I thought I would pass on my findings.
I ordered a black IH CPS from DP-Tuner and stuck it in, taking readings on AE before and after. Both numbers came with EOT above 170 deg.
Rotational Velocity %
Cylinder 1 Gray 0.2 Black 0.2
Cylinder 2 Gray 1.1 Black 1.3
Cylinder 3 Gray 1.9 Black 0.1
Cylinder 4 Gray 0.4 Black 0.6
Cylinder 5 Gray 0 Black 0
Cylinder 6 Gray 0 Black 0
Cylinder 7 Gray 0 Black 0
Cylinder 8 Gray 2.8 - 3.5 Black 0.4
The gray CPS failed #3 & #8 on the CCT. The black one passed all cylinders. I'll see if I notice any SOTP feel after I get a few miles on it.
This info may vary with different trucks, but I thought I would pass on my findings.
Thread Starter
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I would agree with this. Roland also reported a 1 MPG increase (might be a bad time for some of you to tell with the switch to winter fuel), but if it does that too, that's an added bonus. I haven't been able to see if it helps my MPG's yet. Too many short trips with trailers mixed in with daily driving to get any good idea.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I would agree with this. Roland also reported a 1 MPG increase (might be a bad time for some of you to tell with the switch to winter fuel), but if it does that too, that's an added bonus. I haven't been able to see if it helps my MPG's yet. Too many short trips with trailers mixed in with daily driving to get any good idea.
Snowboard season cometh..
Joined: Jan 2006
Posts: 5,406
Likes: 1
From: Gulf Coast of Florida
No need for the reps. I've got plenty.
I had someone ask me for the part number, and have stumbled across something interesting. According to our lovely search function the IH part number for our trucks is 1825899C93. When I read the box from DP I see this
More search reveals this looks to be the CPS for the OBS trucks. I can't argue with the improvements it made on my truck, but now this has me wondering.
For any others that have used the black IH model. Do you know which part number you used? Anyone know the difference between these parts? I'm going to shoot Jody an email and see what he has to say.
I had someone ask me for the part number, and have stumbled across something interesting. According to our lovely search function the IH part number for our trucks is 1825899C93. When I read the box from DP I see this
More search reveals this looks to be the CPS for the OBS trucks. I can't argue with the improvements it made on my truck, but now this has me wondering.
For any others that have used the black IH model. Do you know which part number you used? Anyone know the difference between these parts? I'm going to shoot Jody an email and see what he has to say.
I went to my "local" International dealer and the 1825899C93 CPS has a new number and was about $25 bucks. I used the number from your pic of what you got from DP and they sold me that one for $51.20.
I swapped back to my old black CPS and the truck started quicker, consistently, but then, it was 60* out today (friggin' 60's in Dec. in Colorado!! nuts!!)
I plan to swap to this new black one I bought and see if I notice any difference.
Elder User
Joined: Jun 2003
Posts: 642
Likes: 0
From: Bay Area, CA
I just purchased my 2nd gray one for my truck. That means this is the 3rd one in a year after the recall. I bet I didnt drive it 10k miles. How can I get my hands on another black one? Edit I will call Dp tuners at 5 am tomorrow. Thanks!