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hey, i have been gone for a while and ran out of cash too, but i am back on it now with old and new problems. besides still getting an egr insufficient after getting a new DPFE and taking it out of bypass, now i can't even start it. what happens is when i try to start the truck a bunch of...

Bob, After running the test the check engine light came back on and i replaced the DPFE sensor thinking that it was bad. After reseting the computer, the check engine light came back on and is reading egr insuf. again. Could this mean that the original DPFE could be fine? If so what should...

I did as you said. Plugged the 2 lines, and connected the EGR vacuum hose line to the REF port on the DPFE sensor. Reset computer. Will post any findings along the way, and after 100mi have been had.

I checked the obd and i am getting one code...egr issuficient flow. what now?

Thanks so much guys, ya'll are a great help to me. I changed all the plugs and the engine is running great now. I also got a computer readout...cyl. 3 & 6 misfire, o2 sensor, EGI valve, and 2 system leans. I cleared the comp. and the check engine light came back on, so i am gonna go have...

I checked the compression and here is the results. I tried to turn the engine over the 5 times for each cylinder. Cylnder psi 1 150 2 160 3 160 4 140 5 160 6 155 Anything, anybody...

Hey guys, I just bought a 1998 4.0L Explorer... and for dirt cheap. The problem is that it won't pass inspection for a couple of reasons... only one that I am concerned with. There was a mechanic that took a look at it, and said one of the 6 pistons was not firing off. I took a look at it...