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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 01-03-2013, 11:49 AM   #1 (permalink)
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Need some help

I have a 2002 f-350 7.3L. The truck started acting up last night as I left work and I'm not sure what is wrong with it. To me it sounds like the engine makes a cluncking noise when I start it up and shut it down. This just started and does it every time now. The truck also seems to be vibrating a lot more than normal. The truck is all stock. It seems to have normal power while driving down the road. I'm not sure where to start looking.
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Old 01-03-2013, 12:09 PM   #2 (permalink)
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The first place to begin is to look at the codes the engine has set. Your engine is an electronic marvel, and nobody can diagnose them without knowing all the malfunction indicator codes the truck has set.

To see the codes, you must have either a scanner or computer software that can access and read the Ford PowerStroke codes set in the power train module (PCM, or main computer). Cheap scanners won't have the power you need to access all the PowerStroke codes. So you need to either take it to a shop that has the correct scanner, or else you need to buy a scanner or software to do the job right.

A reasonable solution - for not much money assuming you have a laptop - is to order AutoEnginuity software, including the extra-cost Ford enhancement. Even the cheapest Windows laptop will work, so if you don't have one, then maybe buy a used one for a coupla hundred bucks.
www.autoenginuity.com

Most pros use a scanner, but not just any scanner. The Hickok NGS is the most popular:
Hickok, Inc. - For Your Quality Automotive Diagnostic Equipment Needs

Note that Hickok also sells the NGS software without the scanner, so you can also use the best with your laptop. But the NGS software costs a lot more than the AutoEngenuity software, so most shade-tree mechanics go with the AutoEngenuity.
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Last edited by SmokeyWren; 01-03-2013 at 12:29 PM.
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Old 01-03-2013, 12:18 PM   #3 (permalink)
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I don't have access to a scanner. I would love to get one, but haven't convinced the wife I need it yet. I have had a check engine light that I think is associated with my HPOP that will come on when I'm under load. The light doesn't seem to come on other than when it normally would. I just haven't taken the time to pull the HPOP out and clean it up.
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Old 01-03-2013, 04:21 PM   #4 (permalink)
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Quote:
Originally Posted by BucktownPSD View Post
I don't have access to a scanner. I would love to get one, but haven't convinced the wife I need it yet.
Just take it to the dealer for just a scan, then show wifey the bill, which will be about 1/2 the cost of AutoEnginuity. If you have them do any work, like changing out a sensor, which you can do by yourself once you identify the problem, then you've spent way more than the scan tool software would cost.

And you'll have it available when the next problem crops up.
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Old 01-10-2013, 11:40 AM   #5 (permalink)
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Just thought I would post a follow up. My noise and vibration was caused by ice build-up on the cross member by the transfer case. All of the slush on the roads up here in Michigan must have gotten up there and froze solid. Any how the truck is fine now and the ice is still slowly melting.
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