Join Date: Sep 2013
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I cranked my truck this morning I think it was around 30 or so (I never had this problem happen to my before) and let it sit for about 10 mins and let it warm up. I took off and as my rpms climbed up slowly I heard a hiss, speed didn't matter unless I was speeding up quickly it wouldn't do it. But if I slowly let off the throttle the hiss would start and stay there until it wasn't getting any gas. This is the first time it's happened to me but then again this is the coldest I've drove it in, im in Texas by the way. I stopped and revved it a little and did it slowly and the hiss was there when I started letting it rev back down slow. I'm not sure if there is any information that you need that I forgot to mention or anything like that. I'm half scared it's my turbo because when it hiss's it feels like there is a little loss of power. I've read a little and maybe it might be the exhaust back pressure valve but I really don't know. This all happened to me earlier today, and about 3 hours ago I drove it back to my house after having left it at my uncles, it was 55 degrees now so it warmed up quite a bit, and well, all my problems were gone. No hiss, nothing. Just good old sound I love of the engine. So, what do you guys think? The back pressure valve, or what? If it is would you guys minding sending me the link of how you clean it or anything like that?
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96 7.3 powerstroke, 4.10 gears, 5 speed f350 single cab dually, 3in downpipe from turbo, cat delete and straight piped-SOLD
2001 dodge 2500 2wd auto