2003 Chevy Suburban Throtle Bore

Tiny
03BURBAN
  • MEMBER
  • 2003 CHEVROLET SUBURBAN
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 75,000 MILES
I recently followed your instructions on how to clean the throttle bore. I have a 2003 Chev. Suburban with 5.3L engine. The car can now climb a hill at 10MPH without touching the throttle. How do I fix this problem? I do not see anyway to adjust the TBore. It appears to be electronic? The Tbore alos appears to be slightly opened compared to when I first took the air intake off.
Monday, September 1st, 2008 AT 4:54 PM

4 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Can you close it by hand? It seems either the cable is binding, or the shat is partially worn, or the tps needs to be replaced.
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Monday, September 1st, 2008 AT 5:05 PM
Tiny
03BURBAN
  • MEMBER
  • 3 POSTS
Yes I can close it by hand.
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Tuesday, September 2nd, 2008 AT 7:40 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Try removing the cabe see if it closes by itself, if not check for movement in the shaft, and the TPS for a flat spot.
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Tuesday, September 2nd, 2008 AT 11:31 AM
Tiny
03BURBAN
  • MEMBER
  • 3 POSTS
I do not believe that there is a cable, it appears to be controlled electronically.
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Tuesday, September 2nd, 2008 AT 11:45 AM

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