2001 F-550 7.3 Powerstroke

[1997F350bully]

Hey everyone,
I have a 2001 F-550 7.3 Powerstroke stake body, and recently the truck started idling bad when cold, but after up to normal operating temps it clears up. Now when I start in morning 35 to 40 degrees, it idles rough, sounds like a miss, wont rev up right like missing and no power. But drive down the road and when the temperature reaches normal levels it the problem just vanishes like someone switched the problem off. Runs great after that. It is showing a service engine light when problem is occuring,but like said the temp comes up the light goes out and the truck runs great. Try to hook up OBD2 reader and the reader does even come on, but it works on all other cars so its not the reader. Please help!
Thanks, Brian

[014x4cc7.3]

Sounds like mine did when an injector was trying to tell me it was going bad. Hope your luck is better than mine. Came and went between rough and smooth for a couple days, then went to rough and stayed. Replaced no 2 injector, all is good for now. Really sucked, felt like I had a small Briggs and Stratton trying to pull the truck down the road.

[1997F350bully]

I got a snap on scanner and hooked it up it came up with P1272 and P1274 does anyone know what this means and where to start to look.

[strokermann]

P1272 High to Low Side Open - Cylinder 2
P1274 High to Low Side Open - Cylinder 4

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Last edited by strokermann : 01-07-2007 at 09:58 AM.

[1997F350bully]

Thanks for the info but what does that mean. What exactly is going wrong and what needs to be fixed or looked at.

[mustangz]

That means the injector #2 or #4 could possibly be bad.Need to check the connectors at the valve covers just to see, as they are a common problem.Look up uvc harness with the search function to learn more.

[1997F350bully]

Pulled the vavle cover today to find the connector hanging half out of the socket. Checked continuity and everything rang, fired it back up it runs great again, Back to Work

[07 Crash Wrench]

Hi
check your glow plugs with a meter.
later,
Mark