hills are a problem

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Jul 19, 2014 | 04:16 PM

jawdoc

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hills are a problem

last few months my 08 F250 has been slow going up hills. The fluid checks out ok and it shifts fine.

just seems to take forever to get up hills. Has 124K

also has a huge hissing noise thats RPM dependant on the passenger side. Will make the sound in neutral just revving.

Jul 19, 2014 | 04:19 PM

senix

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From: Frederick, MD

what kind of boost are you getting?

Jul 19, 2014 | 07:27 PM

jawdoc

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its a gas V10 so no boost

Jul 20, 2014 | 05:54 AM

senix

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From: Frederick, MD

perhaps an exhaust leak.

Hopefully someone else will chime in that has the V10.

Jul 20, 2014 | 06:36 AM

GOT-DRT

Tuned

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From: Trumbull CT

It sounds like a cat going bad to me

Jul 20, 2014 | 07:34 AM

Tom

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From: Isanti, MN

Could be a bad cat, but I've never heard of one of them hissing before. Are there any trouble codes?

Jul 20, 2014 | 07:42 AM

nojoke327

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From: monroe ct

I lost a ton or power from my cats going bad in my 08 5.4. There were some problems with them. I got mine replaced under warranty but I believe it was $1200 for the y pipe or something outrageous like that

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Jul 20, 2014 | 09:45 AM

pappy19

Fleet Mechanic

Joined: Sep 2007

Posts: 1,256

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From: Garden Valley, Idaho

You need to post on the 6.8 V-10 thread. Give the year model.

Jul 20, 2014 | 02:04 PM

#10

clem1226

Cargo Master

Joined: Mar 2006

Posts: 2,502

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From: Bend Oregon

Quote:

Originally Posted by Big-Foot

I had a 68 Cadillac in high school that turned in to a whistle, I scratched my head for a couple of days until I started cutting exhaust off it and found the collapsed inner pipe