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Executive

California/Arizona/South Dakota

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Posted: 05/14/12 12:56am

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ANOTHER post where the OP gets lots of responses, but is never heard from again....sometimes I wonder why we bother.....

....rant over....Dennis

Dennis and Debi
Monaco Executive M-45PBQ Quad Slide
525HP Cummins ISM 6 Spd Allison
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klm

SIOUX FALLS, SD

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Posted: 05/14/12 05:24am

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I have a cummins 5.9 - had a similar problem on the hills. Unfortunately, for me, it was my bosch 44 fuel pump - it was an expensive fix - about $1200 - but no issues since. Like the OP, I had the fuel filters changed - a couple of times, to no avail.

'02 KOUNTRY STAR DP
2012 HONDA FIT "PUMPKINMOBILE"
GILLIGAN- 1ST MATE CAT - 3 HR TOUR

Sandra

Lake Arrowhead, Ca.

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Posted: 05/14/12 09:18am

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Maybe it's because we are still trying all the suggestions. That's what we are doing. As soon as we cure the problelm will let you know. Thanks for all the help.

Sandra

Lake Arrowhead, Ca.

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Posted: 05/17/12 10:47pm

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Thanks for all the suggestions. Turns out it was the exhaust brake that was broken and stayed in the closed position. When it was wired open ran good. Replacement has been ordered,waiting for install.

wolfe10

Texas

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Posted: 05/18/12 06:42am

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Sandra,

What exhaust brake did you have/did you order?

And when was it last lubed (if PacBrake)?

Brett Wolfe
1997 Safari Sahara 3540
EX: 1993 Foretravel 36' U-240

FMCA Forum: www.community.fmca.com/index

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Sandra

Lake Arrowhead, Ca.

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Posted: 05/18/12 07:36am

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Not sure on either counts. It is a 10 year old Cummins engine. Have not picked up the unit or seen a bill.

Busskipper

Arnold,Md

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Posted: 05/18/12 08:33am

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Executive wrote:

Since you just had the filters changed, I would start there first. Make sure they were filled and tightened properly. If they check out ok, examine the lift pump....Dennis

On edit: What is your turbo boost showing....

Had a similar issue a few weeks ago and it turned out to be the turbo was not tightened when they worked on the exhaust leak -- tightened it up and ran like a champ.

BOL,

Busskipper
Maryland/Colorado
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States traveled in this Coach

Executive

California/Arizona/South Dakota

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Posted: 05/21/12 10:07am

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Sandra, thanks for sharing what was wrong with your coach. While the exhaust brake is expensive, it's easy to replace. Consider upgrading to the PXRB, you'll be glad you did...not much extra but the benefit is great. I had a Dynasty with a 8.3 Cummins and it made a world of difference. I replaced mine myself in a campground in about 45 minutes so replacement is not a big deal. You're maybe looking at an hour or two diagnosis charge plus install labor...good luck and I'm glad it was something simple....the turbos are expensive....Dennis

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