97 HELP WITH CODE READINGS

1997 GMC C1500

Tiny

bradandkim2

July, 27, 2007 AT 9:40 PM

97 gmc pu 4.3 vortec v6, code p1406 egr valve pintle position circuit and p0101 mass air flow system performance. Idles fine but bogs down during accelleration rpms rise to 3500 struggles to reach even 25 mph. Egr valve seems to move freely after inspection any ideas?

FOUND 830 RELATED QUESTIONS

Ecm Problem

88 ANSWERS

1 Answer

Tiny

kin chan

July, 28, 2007 AT 1:20 AM

Depends on how sure u wanna to verify a cpt failure.

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