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I just installed my 4th CPS on my '01 F250 SD. 114,000 miles only.
Easy enough with the proper tools. I keep 1 or 2 in the glove box with tools.
I use the Grey ones from Ford.
My questions are: What, exactly, goes wrong with them?
Has anyone tried to refurbish one?
Thanks, Marvin
EDIT----Wife reminded that two were replaced by Ford under warranty, so that makes FIVE in 114,000 miles.
Last edited by GA_Boy; Oct 23, 2018 at 07:26 PM.
Reason: NOT solved at all
I know you don't want to hear it but it's the nature of the beast. I had similar issues when I owned my '02 E350 with the 7.3. I always carried a spare as I never knew when it would go belly up. Mine had the dual alternator package and replacing it was a real PITA. The lower alternator was in the way.
I have read and I bought a blackish colored one off of amazon. I haven't installed it, but it rides around in my glove box for the occasion. Might look at that. I think it is black or dark blue.
Here I go again.
I had my Mechanic put another gray one from Ford.
Brought it home and drove fine the next day.
Then I let it sit for 5 days and the sixth day it would not run. Cranked over fast and fine.
I tried it a few days later and it cranked so I called my Mechanic and he said bring it in.
Tried yesterday -------would not run.
Tried this AM----would not run. Drove another vehicle to the post office, returned home and tried again.
Darn thing cranked and ran fine so I took it to Mechanic. He put his machine/code reader on it and got NO codes.
I have an Idea that it is not the CPS causing the problem.
Since I cranked and cranked could it have built up a little heat and then when I tried later it cranked?
I am at a total loss and the Wife will not go anywhere in it for fear it will not start and leave he stranded in a HOT vehicle.
Can anyone give advice, things to check or anything that will help alleviate the problem?
Thanks, Marvin
Intermittent crank no start is one of the worst gremlins to nail down. When I worked at Ford my neighbor of all people had a brand new Lincoln Town Car that started doing that. He brought it in to us and we kept it for several days testing it everyday. Could not reproduce the problem. Gave it back to him. Couple days later back in the shop on the hook same thing. We kept it again for several days and found nothing and could not reproduce the problem. This went on and on for weeks. And he was my friends Dad that lived right behind us. So it wasn't a very comfortable situation. Ford was not helpful at all. So I told him to start a Lemon Law case long story short Ford gave him a new car and he never had another problem again. The problem car I have no idea what they did with. But we did work on it many many times trying in vain to figure out the problem. Replaced harnesses, parts, etc. no go. I wish you luck and hope you figure it out.
In the factory manual for my 2000 F250 SD 7.3 is a section on checking and correcting the excessive distance between the mounting face for the CPS and the trigger. Seems like a tolerance stack up between components can position the CPS too far away and filing the boss on the timing cover until the distance is brought to within a specific range is the cure. Hope this helps.
In the factory manual for my 2000 F250 SD 7.3 is a section on checking and correcting the excessive distance between the mounting face for the CPS and the trigger. Seems like a tolerance stack up between components can position the CPS too far away and filing the boss on the timing cover until the distance is brought to within a specific range is the cure. Hope this helps.
Cool, thanks. How can I measure to know how to modify to meet specs?
Marvin
BTW, I read where the magnet had to be head on to the electrical sensor and then the whole thing centered..
When cranking do you see RPM’s? If so your CPS is working. Need to OHM out the 42pin connector for resistance to the injectors and glowplugs. You might try an international CPS next time.
When cranking do you see RPM’s? If so your CPS is working. Need to OHM out the 42pin connector for resistance to the injectors and glowplugs. You might try an international CPS next time.
Still would not run but cranked over fast. This time I checked the RPM needle and it showed some RPM's all the time the engine was turning over.
If this means the CPS is good what do I look for now?
It’s been a few years since I’ve had my 7.3 sooo. Do you have a way to monitor data using torque pro or ForScan. We need to see if you have good HP oil to fire the injectors. You could also check to make sure the tin nut on the IPR valve is tight. Next would be to OHM out the 42 pin connection to see if you have a wiring issue to the valve covers. The valve cover connection under the cover is a known issue. The harness can come loose and lose connection.
It’s been a few years since I’ve had my 7.3 sooo. Do you have a way to monitor data using torque pro or ForScan. We need to see if you have good HP oil to fire the injectors. You could also check to make sure the tin nut on the IPR valve is tight. Next would be to OHM out the 42 pin connection to see if you have a wiring issue to the valve covers. The valve cover connection under the cover is a known issue. The harness can come loose and lose connection.
UPDATE: This AM it would not run, but cranked over and the RPM needle was registering about 50-100rpm's.
I then unplugged the IPC sensor and the electric plug was covered in oil. I then tried to crank with it unplugged. It would not start so I plugged the ICP back in and it cranked and ran.
I then unplugged the ICP wiring harness again and this time it cranked and ran fine.
The truck has been idling rough for some time now but seems OK on the road.
How can I now tell if it is the ICP, IPR, or valve cover gasket.
Still don't know where pin 42 is.
I can't begin to tell you guys how much this 78n yr. old appreciated your help.
Marvin
How much oil was on the pigtail for the ICP? If it’s oil soak you could try to clean it with carb cleaner. Might be time to change the pigtail and sensor. The 42 pin is DS under the air filter tube to the turbo. It’s square with a lot of wires.
