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89 Suburban Surging idle when warms up

Arakel

Registered Member
Joined
Sep 25, 2005
Posts
7
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Location
Egypt
Hi Everyone my 89 Suburban tbi
after smooth crank up it idles for 5 minute, Perfect, even if u step on the pedal, once warms up check engines comes and goes and during that truck gets choked and raises over idle for a second automaticaly, and later chokes again and dies.this happenes continouse and it dosnt die just chokes again and again with intervals of 6 seconds appart
after dying ignition on the injectors make a noise as if they want to pump gas.
Thanks if anyone has a clue, vacumes checked,fuel pump is new. ignition ok
 
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