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Old 03-16-2013, 10:36 AM   #1
RMK
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Mayday!

1999 American Eagle, 350 cummins diesel with a 6 speed Allison Transmission

Problem: Starts and idles fine and can run rpm's up at idle without problem. Underway it becomes a dog. No power! 20 mph up hills (better downhill). Was driven for 40 miles under these conditions with no change. Had engine oil/filters to include fuel filter changed 10-20 miles ago.

Not sure if this is a fuel delivery problem, turbo issue or what. Anybody else ever experienced this issue?
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Old 03-16-2013, 10:38 AM   #2
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Welcome to IRV2. I'll move this to the Cummins forum.
Good luck.
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Old 03-16-2013, 10:39 AM   #3
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Had a problem with similar symptoms: cleared up when I replaced the air filter.
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Old 03-16-2013, 10:44 AM   #4
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If the filters are not plugged and you are sure of it (black slime) who ever changed your filters could of installed the wrong filter(s) with the wrong micron filtering and they are starving your engine when it is working harder than a idle or going downhill. I would change out the fuel filters and look inside them(cut them open) to make sure you do not have a fuel slime problem and install the new filters and make sure they are the right ones. Hope this helps you to get going......
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Old 03-16-2013, 10:48 AM   #5
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How many fuel filters were you billed for ? Could be they repaced one and you have 2.
Even possible that, the filter change brought on an issue with the lift pump.
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Old 03-16-2013, 11:16 AM   #6
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RMK:

I had a similar problem like that last year. I was driving along normally and all of a sudden I lost power. There was no light or error messages. I limped into a my local diesel shop, as I was only 25 mies from home, and left it for them to fix. 2 days later they called me to pick it up. The turbo sensor had failed and told the ECM that the turbo had failed and it went into limp mode. After the sensor was replaced it ran great again.

Don
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Old 03-16-2013, 11:26 AM   #7
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2nd filter on the fuel need to be changed or checked.
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Old 03-16-2013, 12:09 PM   #8
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Yes. Check your exhaust brake. The flapper may be frozen closed?
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Old 03-16-2013, 12:22 PM   #9
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Suspect number one: Fuel delivery issue. Due to the fact that it was running fine
until the filter change, I would strongly suspect an issue with
the fuel filter(s).
Suspect number two: Air filter clogged.
Suspect number three: This is highly unlikely but you could have a charge air cooler
issue. Either a hole in the cooler itself or, more likely, a hose
has come off/loose.

I'd seriously be looking at the fuel filter(s) though.
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Old 03-16-2013, 05:01 PM   #10
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Thanks for all your very helpful reply's. I thought that the fuel filter was the most likely suspect. I started by changing the primary fuel filter out with no effect. After following the intercooler line back to the radiator I found that the flexible hose that connects the metal tubing had slipped off (kinda hidden back up a crack). I reconnected and tightened clamps and all is functioning well.

Thanks for all your rapid replays.
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Old 03-16-2013, 05:13 PM   #11
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Thank you for the update and good to hear a easy fix for you, safe travels....
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Old 03-16-2013, 05:46 PM   #12
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Quote:
Originally Posted by palehorse89 View Post
Thank you for the update and good to hear a easy fix for you, safe travels....
X2.
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Old 03-16-2013, 08:20 PM   #13
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Quote:
Originally Posted by RMK View Post
Thanks for all your very helpful reply's. I thought that the fuel filter was the most likely suspect. I started by changing the primary fuel filter out with no effect. After following the intercooler line back to the radiator I found that the flexible hose that connects the metal tubing had slipped off (kinda hidden back up a crack). I reconnected and tightened clamps and all is functioning well.

Thanks for all your rapid replays.
Thanks you very much for getting back to the forum with the results. Sure wish more folks would! Glad you got it squared away....
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Old 03-17-2013, 08:54 AM   #14
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Scan Gauge D will show boost pressure
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