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  #1  
Old 10-22-2011, 09:22 PM
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what might cause rough idle?

Just wondering what would cause a rough idle... not super rough where i'm shaking or sputtering but just listening to it, it jumps around just slightly. I know I've had a problem with something for a while since I've been lacking power for some time now, just doesn't wanna move out of its own way. ICP was replaced about a year ago. Thoughts??

On a second note, I'm looking at a new cps. I understand the black cps is better, but on ebay only black ones found are for older rigs, 94-96... are these what I want? Will they work on mine? And whats the deal with the blue ones??
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Old 10-22-2011, 11:39 PM
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The New CPS will cause an odd Idle. Last time I looked Clay still had a few old ones. I had the old one throwing codes for injectors 8 and 2 or something dont remember it was awhile ago.
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Old 10-23-2011, 01:35 AM
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PO had my truck done recall they put grey cps.

1 1/2 years later now I notice rpm would jump about 100-200 when idle. It only doing that during rain It was little rough it like you had 1 weak injector not fire well.

When drive it cut off all times in rain. It go away when there no rain

I got new grey cps from diesel shop but notice it smaller than Ford one which is bigger.

Click the image to open in full size.
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Currently drive 2000 f350 7.3L XL 4wd auto. mpg vary 15-17.

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Old 10-23-2011, 02:51 AM
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Yes mine only jumps a few hundred rpm at idle. So did new cps fix it??
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Old 10-23-2011, 11:52 AM
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Quote:
Originally Posted by mikeyc0120 View Post
Yes mine only jumps a few hundred rpm at idle. So did new cps fix it??

It fixed but random it had rough idle it would jump a about 100 rpm or less.
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Currently drive 2000 f350 7.3L XL 4wd auto. mpg vary 15-17.

1999 F250 5.4L 2wd 5.4L auto with over 246K miles. Got used 5.4L with 100K miles. Need find motivation to install 5.4L.
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Old 10-23-2011, 11:58 AM
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Quote:
Originally Posted by driximus View Post
The New CPS will cause an odd Idle. Last time I looked Clay still had a few old ones. I had the old one throwing codes for injectors 8 and 2 or something dont remember it was awhile ago.
I believe Clay and Guzzle are both out.

If you can find one, I think they are worth it, (It's #3 and #8, BTW) but still keep a spare in the glovebox w/ a 10mm wrench. (I do.)

You can also get them from International, just ask for a CPS for an "International T444E" NOT a Powerstroke, lol! I'd only use a Ford or International CPS.
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Old 10-23-2011, 12:01 PM
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Old 10-23-2011, 12:01 PM
 
 
 
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