Question about 1988 Chevrolet C1500

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Chevy 1988 truck 5.0 My truck will start and run, but once it is warmed up and you put it in drive or reverse it dies, it will not stay running. If you put it in neutral or park it idles fine. If you put it in drive and stomp the gas it will drive, but when you come to a stop sign it will die, unless you put it in neutral. We have replaced: rebuilt throttle body with injectors (2), air control value replaced, MAP sensor, TPS sensor. Any suggestions?

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Idl air control (IAC),may be bad,also,check the EGR valve,and all vacuum lines going and coming from the throttle body. yu can test the EGR,just try pushing the diaphram by hand from beneath. if you can move it easily its good,if its hard,or doesnt move,ot needs repaced. also a pcv valve and air filter are good ideas,considering you have replaced 80% of the emission system already.

Posted on May 02, 2010

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Posted on Jan 02, 2017

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