Runs strong when cold but seems to lack power

Tiny
DSHENRY
  • 1993 CHEVROLET BLAZER
  • 138,000 MILES

I have a 93 K1500 Blazer 4x. 5.7L 138000 miles, runs strong when cold but seems to lack power when up to temperature. I have replaced the dist, cap, rotor button, plugs and wires, egr and PVC, fuel filter and cleaned tbi. No codes are showing. What could this be? Cat?

Do you
have the same problem?
Yes
No
Tuesday, September 25th, 2012 AT 2:37 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,526 POSTS

Check fuel pressure, check back pressure from cat converter and check the coolant sensor

Roy

Was this
answer
helpful?
Yes
No
Please consider a donation if we helped you
Tuesday, September 25th, 2012 AT 3:18 PM

Please login or register to post a reply.

Related Engine Low Power Questions

Recommended articles