[99luminaguy]

Good news, I resolved the p0440 by replacing the fuel pump o-ring, bad news is the p0452 has returned. Since I was able to recoup my last repair bill from the local garage ~$360., I decided to throw some parts at this problem at my expense. Since the fuel pressure sensor had already been replaced, I purchased a new vapor canister purge valve and purge solenoid. One installs in the driver rear wheel well on top of the vapor canister the other on the front of the engine next to the valve cover. Purchased both parts from Amazon for ~$35. (NICE!), but no luck, the p0452 posted returned on the third cycle.

Wondering if I have a leak somewhere, maybe in the fuel neck as it looks pretty corroded. I could purchase with a new one for ~$85., but now I’m guessing. I don’t have any other diagnostic capability other than a basic Actron unit to pull the codes, no monitoring capability. The code seems to return vary randomly, no observed pattern of any sort. I’m now wondering if I should take it to the dealer and let them diagnose or give it a shot with replacing the fuel neck? All the vacuum lines and connections to/from the pump to the purge solenoid look good. Barring a smoke test or more advanced diagnostic, no way of me pin pointing the problem. Anyone have any thoughts on this or should I just let the dealer diagnose further meaning $$$?