Type: Posts; User: earnman
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01-16-2012, 01:33 PM
found problem!! i was brought after the fact. the fuel pump was changed so i checked pressure and found 25 psi. it needs 47 psi . so i pulled pump and found upper hosxe clamp not there makeing fuel...
01-08-2012, 05:36 PM
new problem no codes idles great and if you press gas slow its fine. if you press flat it will stall unless u let off gas fast. still goes back to good idle.try to move truck you have to really slip...
found problem apparently the iat fell out and fan cut wires. took awhile to find wires and place for iat was under shout by radiator
drive 99 sierra 290k miles
gm truck man and mechanic
ck engine light on code 23 low iat(mat)temp
problem is i have no iat on this vehicle i cked all intake duct from filter back
scanner shows -40 degrees for something i have not got?
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