Question about 1997 GMC Sierra

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Code p0219 how do i fix it i recently replaced the pmd and the truck was working fine for a couple of days the stared idling up and down

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Posted on Jan 02, 2017

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SOURCE: truck shuts down when it goes to idle


Check idle air control system. The system comprises a valve that allow extra air into the engine when the engine is idle. If the valve is stuck, if there is a problem with IAC wiring or solenoid or if the vacuum hose connected to the IAC has a leak you get engine running rough and turning off when idle.

Check air intake and sensor (MAF and AIT). Replace air filter. Air intake problems may result in rich mixture and in engine turning off.

Check EGR and PCV valves. These parts may cause rough idle. When the problem is EGR or PCV you usually get troubles also when driving.

Posted on Dec 15, 2011


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