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Tiny
FEZUK
  • MEMBER
  • 1999 GMC JIMMY
  • 99,000 MILES
Hello I just bought the jimmy it run good for 2 weeks but one day it start buck really. So o change the gas fitter but it was not that I change the egr valve but was not that but when I unplug the egr value it stop bucking but its the car won't shift into higher gear so Idk if I should change the Catalytic Converter or something
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Sunday, January 1st, 2012 AT 12:11 AM

4 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Any codes in computer?
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Sunday, January 1st, 2012 AT 12:14 AM
Tiny
FEZUK
  • MEMBER
  • 2 POSTS
P0405 Exhaust Gas Recirculation Sensor A Circuit Low P0406 Exhaust Gas Recirculation Sensor A Circuit High
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Sunday, January 1st, 2012 AT 12:21 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Codes are erased and have not returned?
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Sunday, January 1st, 2012 AT 4:40 AM
Tiny
JOHNS93JIMMY
  • MEMBER
  • 2 POSTS
I have a 93 Jimmy with a 4.3 vortec that is doing the same thing. I cleaned the EGR valve, OCV valve, and the idle air intake control valve and now it rarely shifts into overdrive. Runs a lot better and has more power but it rarely shifts all the way out. How did you fix it?
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Wednesday, February 27th, 2013 AT 4:52 PM

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