454 starts & runs for a few seconds, have 2 pump pedal 2 keep it running, backfires through tb

1994 CHEVROLET SILVERADO
250,000 MILES
Avatar
JOHNNY1956
  • MEMBER
  • 1 POST
replaced fuel pump,map sensor,cap & rotor,plugs & wires,tps, has 33, 34,43 codes
Nov 17, 2011 at 7:15 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the fuel pressure and the IACV and TPS sensor
Nov 17, 2011 at 7:24 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle