caddypete Posted April 23, 2008 Report Share Posted April 23, 2008 have had a random miss setting a P0300 code, I had a friend put a tech 2 scan tool on it and he said the rear bank was randomly misssing on all cylinders but at seperate times. I figured it must be the coil pack going bad. I got a steal on a set on Ebay off a 2002 STS, both coil packs and all boots for 25.00 and 25.00 shipping. I also noticed he had the fuel rail with FPR and all injectors, got that for 10.00 and 20.00 shipping. After changing rear coil pack there was still a miss. I noticed a air leak sound and couldn't tell if it was just the intake noise. I decided to change out the boot between the TB and intake, because I have seen that mentioned many times on here that they crack and cause problems. Sure enough it had a crack in it near the bottom where it would never be seen. The car runs great so far after about 35 miles. I also found a mouse nest in the valley under the intake, the wires that run to what ever sensor that is down in the valley on the rear bank were strppped almost bare, so I cut it out and replaced those wires. That eventually would have caused me headaches I'm sure. Now I am very content with my Caddy again. Forgot to mention I recieved a ticket Sunday because of that engine miss, I found when it missed you nail the pedal and the miss would clear up, well The engine caught and launched the car as I crested a hill and coming the other way was a state officer and he nailed me for 63 in a 45. Oh well at least it is fixed now. Link to comment Share on other sites More sharing options...
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