1993 Chevrolet Suburban engine full rich in reverse

Tiny
FISH BRENT
  • MEMBER
  • 1993 CHEVROLET SUBURBAN
  • 7.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Has trouble codes 22&34 t.P.S&m.A.P the only drive ability symptom is goes into full rich in reverse
Friday, August 22nd, 2014 AT 1:41 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try some choke cleaner on tpas switch and around tbi unit it may be the tps switch it self. For the map sensor check to make sure hose leading to it isn't soft and sucking together or has a hole in it etc. Otherwise a pro will have to check it for a short. Of course you can try to replace these as well as they may be bad.
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Friday, August 22nd, 2014 AT 3:18 PM

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