01 gmc motor swap no power

2001 GMC SIERRA
V8 • 2WD • AUTOMATIC
Avatar
WELDER6713
  • MEMBER
  • 1 POST
i swap motors now it runs rough and bout 30 when ped on floor what to do
Jan 4, 2011 at 8:42 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If you changed year or model engine, chances are there is a sensor issue. Check for major vacuum leaks, check for trouble codes, check timing, also, check the throttle position sensor as well as the mass air flow sensor.
Jan 17, 2011 at 3:31 AM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.