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View Full Version : Funny thing going on with motor

wade w
05-05-2009, 08:58 PM
My truck has a kinda miss to it at a steady slower speed. Up around 70 it goes away. and it idles dead smooth. If you accell at all when it is doing it. It goes away as long as you are speeding up. Some times it doesnt do it at all ,but most of the time it does as long as I am going slow enough. Any ideas? Somebody told me it might be some funky named thing that had something to do with the EGR. Cant remember what he called it. I know its on the driverside of the blower with some vacuum lines and i think some wires going to it.

BTW I fixed the boost gauge. Had a broken fitting that was blocking the line to the gauge. Also the factory boost gauge is on crack. It goes to what would be at least 15 lbs. I got a big aftermaket gauge from somebody that I hooked up just temp. it was showing 12 to 12.75. That seems about right to me.
bgstew6
05-05-2009, 09:06 PM
that would be the DPFE
DolSVT00
05-05-2009, 09:16 PM
yup, cap off the vaccuum line that comes off of the top of the egr (black rusty flange flying saucer lookin thingy bolted to the plennum) then drive it around and see if it fixes it.
wade w
05-05-2009, 10:04 PM
Cool. Thanks. If it does fix it? Then what?
DolSVT00
05-05-2009, 10:06 PM
Delete that SHAT!
wade w
05-05-2009, 10:12 PM
Ya I would really like to, but I would have to get another tune for it. Money's funny right now.
bgstew6
05-05-2009, 10:41 PM
IF you got a predator turn it off in the tune yoruself
wade w
05-05-2009, 10:45 PM
Na. I have a SCT.
DolSVT00
05-05-2009, 10:58 PM
Delete it anyway, it will throw a code but there's no adverse effects from it.
wade w
05-08-2009, 08:00 AM
Delete it anyway, it will throw a code but there's no adverse effects from it.

I did block the line. I seemed to fix it, but I havent really got to drive it much to make sure. If it does throw a code wont the CEL come on?
DolSVT00
05-08-2009, 10:32 PM
I did block the line. I seemed to fix it, but I havent really got to drive it much to make sure. If it does throw a code wont the CEL come on?

yup
wade w
05-11-2009, 11:23 AM
For right now Im just leaving the line blocked off. It hasnt thrown a code like that. If I did away with the hardware part of it. It wouldnt throw a code like that would it? Seems you would have to unplug the elect part of it to make it throw a code.