Mechanics

I HAVE A 93 K1500 4X. 5.7L 138000 MILES, RUNS STRONG WHEN COLD BUT SEEMS TO LACK POWER WHEN UP TO TEMPERATURE. I HAVE REPLACED THE DIST,CAP,ROT

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?
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Dshenry
September 25, 2012.



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

Roy

ASEMaster6371
Sep 25, 2012.