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Old December 16th, 2011, 10:45 AM   #7
bdd1469
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The first thing to check is fuel pressure.You can loan the tool from autozone for a $150 deposite.After you detrermin that you have 10-11 psi check your idle air control valve,and check your egr valve for a chunk of carbon holding it open.If the truck is running,and you unplug the coolent temp sender,the idle should change.there may be two temp senders,one for the dash,one for the computor,make sure you check the correct one.
Im betting on a bad fuel pump.
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