New to dodge and need some help!

779 Views 8 Replies 5 Participants Last post by  safet3rd
Hey guy's my name is Paul and I have lurked these forums off and on for awhile now because I always had a soft spot for ram's, Well I finally bought one she is a 98 Dodge Ram 1500 4x4 with the 5.2L engine.

Well here is the deal she threw a CEL on the way home after I purchased it, checked it out and found out it was P0308, so cyl 8 misfire well I did some research and found out the plenum gasket is a big thing on these trucks and could be the culprit. Figured I would wait a bit and then tear it done well the next day the TPS was acting up sooo in the garage it went. Last night I replaced the plenum gasket along with the other gaskets that were needed, Cleaned out injectors, Replaced the TPS, Thermostat, and a few other things. Have not done plugs but they are going on tomorrow.

My question is on start up after having it torn apart and replacing the plenum I have 3 codes now P0300 Multiple misfire, P0306 Cyl 6 misfire, and P0308 Cyl 8 misfire. I figure if it were the plugs it would still just be cyl 8 misfire, guess i will find out. Anyone have any other suggestions?
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I'd probably start by rebooting, key to ign, disconnect neg cable, key off, reconnect neg cable, go to start and see if it cleans up, give it a minute or two to figure out where to set all of its parameters, this has been known to work, otherwise, I'd say you forgot a vaccum line off somewhere, good luck!!!!
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