1989 Chevrolet Cheyenne trottle body , been repleace

1989 CHEVROLET CHEYENNE
375 MILES • 2.6L • 6 CYL • 2WD • MANUAL
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JONA1965
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has been spending a lot gas , even after replace the throttle body ,is running kind to fast in the mornings , when I star up and then later smooth , the motor has been overhaul ones 1 1/2 year ago ,

please let me know what else needs to be replace
Jorge n
Oct 9, 2015 at 1:05 PM
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HMAC300
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scan for codes and check for a vacuum leak first. check hoses for being soft especially to map sensor on firewall and pcv valve.
Oct 10, 2015 at 6:34 AM