exhost valve shutting all the time
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Freshman User
Joined: Aug 2008
Posts: 39
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exhost valve shutting all the time
it started a couple months ago, i would be driving down the road, and with my intake i can hear the exhost valve close, then open, then it would close again. noteing the temp was just making it to the normal range, i changed the thermostat. problem solved, so i thought.. now just last week, i fired up the truck and didnt let it worm up too mutch, as i had drove 10-15 mi. about 1hr before, and i had little to no throtle for about 2min. then all of a sudden i could hear the valve open and the turbo spool up and all was good. till the next time i started it, when it is almost worm, and the same thing. i didnt think it was a big deal till i went to pull out in traffic and the truck wouldnt do more than 10 mph. no ETC's lights or other, and once its worm it still closes once and a while, but not enough to cause a problem with driveability. im not shure where to start.
96 f-250 e4od 4x4
96 f-250 e4od 4x4
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
what is the temp were your at? could be a exchaust back pressure sensor. just unpluge it the pluge is under the driver side of the turbo wait til the eng. is cold and unplug it before u start it.
