- Joined
- Feb 14, 2011
- Messages
- 96
- Reaction score
- 7
- Location
- chicago
- Vehicle Year
- 2011
- Make / Model
- Ford
- Engine Size
- 4.0
- Transmission
- Automatic
Cleaned out the bed and loaded camping supplies
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Mine was the purge valve under the hood, on the drivers inner fender, but it could be anything in the system. A bad filler tube from the tank to the fill port could be bad. I had that one too."fixed" one problem and found another.
IIRC last time I posted about the truck I had rough idle and stalling problems, was throwing codes for #8 missfire, and intermitten missfire, and CMP circuit malfunction.
I swapped the new IACV out for an old one last night and the surging and stalling seems to have gone away when I drove it into work today. Idle is still rough, but it's going to be until it gets tuned due to the camshaft. I also think idle is too low, it sounds low and I can see the electrical pulsing in the lights at idle (and I'm running LED headlights), but I'm going to wait until I've got the other issues squared and/or tuned to try monkeying with idle settings.
I think I can track the missfire back to a burned spark plug wire. Had a spot where #8 wire got a little too hot, I think it might have intermittenly been hitting the header and grounding. Repositioned the wire last night, reset the codes, and they did not return today.
I think the CMP circuit malfunction was a combination between those issues and a weak alternator/battery. My scanner has a battery test function and it said weak. Need a maintenance cycle on the battery and see what happens. I think my alternator is subpar because even driving down the road with nothing turned on the system is only running about 13.5V it should be over 14V. Time will tell.
The new problem is P0455 which is "EVAP System Leak Detected (Large Leak)" according to one device. I read about this problem on some explorers (my 5.0L swap donor) being a vacuum tube from the intake to the purge valve being cracked. I suspect that this may be the case because, with the hood popped, I can hear a sucking sound that changes pitch when I move that vacuum line. Sounds like a vacuum leak which will cause the purge valve to not work properly and make it think that there is an EVAP leak. If there is a vacuum leak it could also be having an effect on my idle.
Picked up vacuum hose to fix that potential leak, but between hot engine bay and weather, it isn't getting done today.
I suspect that mine is actually the vacuum tube going from the intake to that valve. Read on an explorer forum where that line being bad will prevent the purge valve from doing its job and make the system think that there's a massive EVAP leak. When I wiggle that particular hose under the hood, I think that I can hear a leak changing pitch.Mine was the purge valve under the hood, on the drivers inner fender, but it could be anything in the system. A bad filler tube from the tank to the fill port could be bad. I had that one too.
That's fitting. Hank would be proud...Refilled the tank and got a brush for the BBQ grill.
Yes. I used the Ranger to get propane and propane accessories.
No, the engine needs to lifted at a minimum. I don't know about just the gasket but many remove the front diff to to make getting the oil pan out easier. The oil pick up tube is the issue with getting the room needed.The 4.0 pan is leaking again. Can I R&R that oil pan gasket w/o propping the engine up does anyone know? The 10mm bolts are maxed out.