Cps Question
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Freshman User
Joined: Sep 2008
Posts: 34
Likes: 0
Cps Question
will the cps always throw a code? do they just fail or can they just make your engine run rough without throwing a dtc? Awhile back my torque converter and other tranny parts went out ,the trans shop had a bunch of transmission codes along with cam position sensor code he said the transmission caused the cps dct.when all this happened the o/d light was flashing and my tach. quit working.could the trans. cause the cps dct,or might i still have a bad cps with no codes.still runs rough it shutters at speeds under 50 mph when you push the peddal. trans shop tells me the transmission has no proglems.i'm trying to eliminate the cheaper problems first.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
This is just my bad experiences with CPS's. When mine went bad, the truck will stall, not run rough. I replaced one in my current truck, one in my previous '99 PSD, a neighbors' F250 truck ('00) and one at a campground in Utah for a retiree (dunno the year but it had the early headlights) and they all would stall and start - not just run rough. Just my experience - not gospel.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Don't get one from NAPA, if you don't have problems now, you will. Get an OEM for about 30 bucks. Really don't sound like a CPS problem, shutter sounds like a balance problem.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Get a cheap one from Ford. Some of our sponsors sell them for $15 + S/H. Don't buy it from NAPA. I've read too many stories about quick CPS failures (sometimes right out of the box) from NAPA or parts stores.
I don't think the CPS is your issue, but as you pointed out, this is a cheap test, and it's a good idea to have a spare anyway. Good Luck.
I don't think the CPS is your issue, but as you pointed out, this is a cheap test, and it's a good idea to have a spare anyway. Good Luck.
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