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Old 11-24-2009, 03:29 PM
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CMP

How can you tell if the CMP is going bad or not? I recently purchased a 99 F350 with the PSD and it takes 3-7 revolutions before it starts. It Idles great once it starts. I thought maybe it was a glow plug problem, but someone on the yellow bullet suggested the camshaft position sensor. There are no codes.

Also, is there a web dealer we can purchase parts from at a discount? Does anyone know of a dealership that gives a military discount? Does anyone know where this sensor is located and how much it costs to replace? I am guessing somewhere near the camshaft? Ha! Ha! Thanks, James
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Old 01-29-2010, 07:39 PM
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wow, no replies, huh? Tanks for nuttin Danny!
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Old 01-31-2010, 07:09 AM
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the cmp is located next to the crank pulley at the 10 o'clock position. 10mm bolt and one connector. if the cmp was bad they usually will start and die start and die.
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Old 01-31-2010, 07:22 AM
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doubt it's your CPS, but it's cheap enough and it's always a good idea to replace it when you first buy a used PSD. you can keep the current one in your glovebox along with a 10 mm socket. It's about 30-35 bucks at the dealer.
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Old 01-31-2010, 11:55 AM
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I already bought one. I am starting to think it may be the number eight injector, as it is beginning to idle rough when initially started. What is the deal about the number eight injector? Can you get them cleaned or should it be replaced? Is it an O-ring leaking? I can't remember? Thanks, James
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Old 01-31-2010, 12:00 PM
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Quote:
Originally Posted by fordmasterdieseltech View Post
the cmp is located next to the crank pulley at the 10 o'clock position. 10mm bolt and one connector. if the cmp was bad they usually will start and die start and die.
That's what I would have thought, but, a local tech said it can cause all kind of weird problems. I haven't replaced it yet, but Have one just in case.

What can you tell me about the number eight injector? It did not ever run rough at initial start up until today. After 6 -7 seconds it smoothed out. It did not run rough on start ups after the engine was operating temp. However, it still takes seven or more revolutions to start and it seems to help if I give it a little fuel after the third or fourth revolution. Thanks, James
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