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Multiple DTC's, need help ASAP!!!

1150 Views 5 Replies 3 Participants Last post by  bengsxr
Hey all, For some time now my '00 Cat has been running real rough on start-up and won't shift or want to run if you shift into gear and try to drive right away. Eventually the car settles down and will drive normally but it takes a little patience to let it settle down.
On to my current crisis. On saturday, I went to Autozone to pick up a headlight bulb and a gallon of coolant. While there I asked them if they could scan my trouble codes. The guy did so and this is what came up: P0171, P0174 which are lean bank one and lean bank two, and about 8 of P30X which were all codes for misfiring on the various cylinders. I'm pretty sure all cylinders were reported misfires on the scanner. After we were done looking at all the various DTC's he asked me if I wanted him to erase all of the codes. I said sure, why not? Well, on my way home from the parts store, the car was bucking and misfiring and didn't want to shift into second. Eventually I managed to get it home. Later that night, I was supposed to meet up w/ some friends. So I got in the car and started it up. When I fired it up, it went up to about 1500 rpm and then dropped to like 200 rpm, sputtered alot and then died out. I thought this was just a fluke but when I tried to start it again it did the same thing. I tried to start it numerous times and each and every time it did exactly the same thing, just sputtered and then died out. I need help bad. This is my only form of transport to get to work since my SS truck is down. I don't know where to begin to look. Any help would be most appreciated. Especially from anyone in Chicago, maybe? Thanks everyone.

MADCAT :confused:
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The lean codes are telling you there is a vacuum leak--either the upper intake manifold or one of the four that attach at the back of the upper intake are off. Also check the vacuum brake booster grommet for leaking---more than likely a hose is off. Hope this helps----

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