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help 7.3 PS cuts off

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Old May 17, 2005 | 01:55 PM
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From: Port St. Lucie USA
help 7.3 PS cuts off

My wife just called. The check engine light came on in our '01 SD and the engine cut off. It restarted and ran for a few minutes then cut off again. Now, it will start and run for 2 or 3 seconds. Any ideas?
 
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Old May 17, 2005 | 02:06 PM
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From: colorado
CMP (CaM Position sensor), also know as a CPS, its a $100-$150 dollar part (you can get it cheaper and in International dealer instead of ford), that is the classic symtom and is a common problem with the 7.3 PSD. it is located at about 10 o-clock on the front of the motor and is heald in with a 10mm bolt. it is easier to get to if you take the engine drive belt off
 
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Old May 17, 2005 | 02:26 PM
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DITO, Cam sensor!
 
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Old May 17, 2005 | 02:57 PM
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Thanks alot guys, GREAT SITE! I just went down to the NAPA and picked one up for $112.00. I'll try it tonight and let you know how it goes.
 
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Old May 19, 2005 | 02:54 PM
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Just wanted to say thanks again. I installed the new cam sensor and she's purrin' like a kitten again. The truck is running good too
 
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Old May 20, 2005 | 01:07 AM
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From: colorado
glad we could help...
 
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Old May 20, 2005 | 01:22 AM
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That's not a bad price, now you gotta go back and get another to keep in glove box for spare for NEXT time
 
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Old May 20, 2005 | 01:28 AM
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From: Texas, Ga.7m wfranklin
Con-grads.. Just checked www.powerstrokeshop.com 86 bucks...
 
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Old May 20, 2005 | 04:48 AM
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how often do these buggers stop working? also, about how long does it take to replace with standard hand tools?
 
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Old May 20, 2005 | 04:59 AM
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Originally Posted by wlihntr
CMP (CaM Position sensor), also know as a CPS, its a $100-$150 dollar part (you can get it cheaper and in International dealer instead of ford), that is the classic symtom and is a common problem with the 7.3 PSD. it is located at about 10 o-clock on the front of the motor and is heald in with a 10mm bolt. it is easier to get to if you take the engine drive belt off
If this is such a widely known problem with these engines, why hasn't Ford recalled them, or come up with a CPS that holds up? Maybe one not made in China or Mexico.

Frank
 
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Old May 20, 2005 | 06:19 AM
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From: Forest Hill, MD
Originally Posted by 99bajakid
how often do these buggers stop working? also, about how long does it take to replace with standard hand tools?
When ever they feel like it. Seriously some guys get 100,000 miles out of the first one some are on thier 5th or 6th by that mileage. Thats why carrying a spare is a good idea. As far as changing it out about 5 mins with a 10 mm wrench and maybe a couple of small flathead screwdrivers to help coax it out of its hole.
 
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Old May 20, 2005 | 11:12 PM
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Originally Posted by psdpower
When ever they feel like it. Seriously some guys get 100,000 miles out of the first one some are on thier 5th or 6th by that mileage. Thats why carrying a spare is a good idea. As far as changing it out about 5 mins with a 10 mm wrench and maybe a couple of small flathead screwdrivers to help coax it out of its hole.
Changing it out isn't that big a deal it is the cost the bugs me.

Frank
 
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Old May 22, 2005 | 11:46 PM
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From: Forest Hill, MD
Originally Posted by missouguy
Changing it out isn't that big a deal it is the cost the bugs me.

Frank
If your feeling lucky sometimes you can get them on Ebay pretty cheap. Just a little tidbit for some of the new guys who may not know, there are 2 part numbers for the CPS, one covers up to a certain time in 97 I think, and the other is for the later trucks ( check Steve Baz's website I think it has the exact change over and pns ). Anyway, either pn will work in a pinch, so if you can only get the "wrong" pn for your truck and need to get it going the get the "wrong one". They are dimensionally identical, the only difference being the metal used in the plug contacts, using the "wrong" pn could eventually lead to corrosion in the plug, not a good thing. So if you need to use the "wrong" pn to get your truck going, you should switch it out for the "correct" as soon as possible to avoid future problems. Just keep the other one as a spare.
 
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