Question about 1997 GMC Sierra

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I changed the intake manifold on my 1997 gmc safari van that has the 4.3L engine. Now the check engine light comes on. it puts out 3 codes ( po102 ) ( po300 ) and ( po507). What did i do wrong and where should i start? van runs strong with no miss but idles high.

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Its soaking air somewere around the manifold make sure you thigten the bolts on the wight pattern if yoou dont know the pattern start from te center to the outside or reset the computer just unhooked the negative cable from the batery for 5 minutes,

Posted on Sep 28, 2009

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