First gear is reving high before shifting

Tiny
ANONYMOUS
  • MEMBER
  • 2002 CHEVROLET SUBURBAN
  • 256,000 MILES
First gear is reving high before shifting. This is the only shifting that is a problem, thought it may be the transmission, but after having a reputable shop check it, they said it is MAF sensor, or a leak. Changed the air filter, and looked at MAF, and it looked clean. But, problem still persists. Suggestions please.
Thursday, October 25th, 2012 AT 1:34 AM

1 Reply

Tiny
HMAC300
  • EXPERT
Check for hoses off or holes in them anywhere on engine. Check the duct work to make sure it is all connected from maf to throttle body, check for a vacuum leak if this is a big block-8.1L check to see if intake bolts are tight they shold be 44 inch lbs or 5 Nm
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Thursday, October 25th, 2012 AT 2:39 PM

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