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Most of us don't memorize the code meanings except the 03's so alway good to post up the meaning. Youtube video on compression tester, local auto parts will have free tool rental. Valvetrain failures would be detected by compression test and are usually relatively easy to see. The rocker arems should go up and down when the engine spins over. Hissing sound is vacuum leak. You can find with smoke machine or shop vac test and Windex, or aerosol maf cleaner. Start by using a long funnel with the large end on your ear.
..:: UPDATE ::..
Still haven't done the compression test yet on cyl 5, but looking forward to get it done on all cyls this coming Saturday, to further troubleshoot the persistent P0305 issue, which now has new logged codes accompanying it.
After the coil swap this weekend, P1319 appeared along P0305 as logged faults after driving 2 blocks and able to step on the gas. I cleared them on Monday morning when driving to work, and they both re-appeared a few blocks after driving. This is what P1319 shows on Torque app...
Disco still rough and shaky, and definitely with loss of power when trying to accelerate, so I'm driving it nice & easy; fuel is being consumed quicker; mileage is within 11-12 per gal aprox in the past weeks, down from 12-13.
But this morning I noticed new codes as logged: P0301, P0306 & P1300, which Torque describes as...
I recall having a hard time this weekend trying to put back in place the upper intake after the coil swap, I had to play a lot with it until I was comfortable that it was in place. All bolts went in fine and tightened them as good as I could, although not confident if at the right torque - I do have a Pittsburg torque wrench, but this last time I did not feel I used it correctly, but bolts are tight. I will be ordering a new gasket to replace existing one during next removal of upper intake, just in case. I'm sure I connected everything back together; I did have the issue of the broken tab in one of the connectors that I showed in one of my previous updates, hopefully this is not adding to the issues on hand.
So besides the upcoming compression test, any suggestions as to what else should I be looking at then that may be adding to the P0305 persistent code? anything that would cause these new logged codes to come up? Should I clear them and see if they resurface? I know that P0305 has been the persistent one, and since the coil swap P1319 twice after clearing ...but this new cyl misfires and P1300 may be simply temporary?
Thanks again.
I still think you have coil and wire issues. But not on 5. You might have pinched a wire doing the intake giving you the P1319 code. Have you downloaded the RAVE? You need the P1319 code specific to LR. It either is a short or an open, we need to know which.
I still think you have coil and wire issues. But not on 5. You might have pinched a wire doing the intake giving you the P1319 code. Have you downloaded the RAVE? You need the P1319 code specific to LR. It either is a short or an open, we need to know which.
...truth be told, few of the wires have some smoky white marks in certain areas, kinda like if a short or something burnt them, besides that, they were all well connected to the coil and seemed not broken or damaged. Coil still looks fairly new. As per putting back the intake, I had my doubts putting it back on, since it gave me more trouble than usual, so you might be right. I will definitely get back to it and will replace the gasket, it looks beat up already. As per the code, yes I have the RAVE and it describes it as "Misfire detected with low fuel level". The loss of power is noticeable after last step, the coil swap. I was thinking about getting new set of plugs, and might as well get a new set of wires just in case. When you say "not on 5", is because you still think that cylinder does have some other issue, right? Let me know, thanks.
Yes, the persistent P0305 after coil, wire, and plug swap means there is something else there. I am assuming you swapped each one at a time so we did not confound the parts. Often there are multiple bad parts on old Discos and you need to make sure you are swapping good for suspected bad to complete diagnosis. I am the last one to recommend just throwing money at parts instead of diagnosis, but I moved my coils where I could easily troubleshoot bad plug wires and coils over 10 years ago and finally made it easy for others to do that.
The knock sensors on D2's almost never go bad, I have never had a bad one nor have I ever read about a bad one on here. I have had bad, damaged, deteriorate knock sensor wiring. The 1319 is a short and that wire is in the loom that runs along the PS lower intake injectors, you could have pinched or damaged that wire during the upper intake removal.
Ignore the P1300, it is irrelevant. It is merely a multiple misfire code.
Please bring CEL code definitions from the Rave manual, not the torque app. This is LR forum and we need the LR definition, not generic or multiple manufacturer codes.
Yes, the persistent P0305 after coil, wire, and plug swap means there is something else there. I am assuming you swapped each one at a time so we did not confound the parts. Often there are multiple bad parts on old Discos and you need to make sure you are swapping good for suspected bad to complete diagnosis. I am the last one to recommend just throwing money at parts instead of diagnosis, but I moved my coils where I could easily troubleshoot bad plug wires and coils over 10 years ago and finally made it easy for others to do that.
The knock sensors on D2's almost never go bad, I have never had a bad one nor have I ever read about a bad one on here. I have had bad, damaged, deteriorate knock sensor wiring. The 1319 is a short and that wire is in the loom that runs along the PS lower intake injectors, you could have pinched or damaged that wire during the upper intake removal.
Ignore the P1300, it is irrelevant. It is merely a multiple misfire code.
Please bring CEL code definitions from the Rave manual, not the torque app. This is LR forum and we need the LR definition, not generic or multiple manufacturer codes.
Yes, I swapped each in different steps, one step at a time and cleared codes accordingly; swapped plug 5 with 6; then replaced wire 5 with a spare; then swapped coil positions; also, since wire replacement did not make a difference, I put the original back during coil swap step. I'm actually considering moving those coils as well, so should be pulling that trigger soon.
As per the "RAVE", P1319 is defined as "Misfire detected with low fuel level", but not sure what that means.
I do recall securing each side inyector's wiring to the rails, since the orig plastic ties were broken, so used new ones on each side. I don't think this would have caused any damage, since I also made sure they were not in the way of anything after securing them. I'll take a closer look when I get back in there though. Thanks!
If 1319 is the low fuel misfire code then I would ignore it. Fix the misfire and it will go away.
...yup, according to RAVE, that's what it is, so I'll put it in the back burner for now then; I'll update you during the weekend with the compression test results and go from there. Thanks EXTINCT!
As per running the compression test, I understand that I need to cut the fuel supply and by pulling out the fuel pump fuse would be enough, correct? and as per cutting the ignition, is disconnecting the side plugs from each coil the way?
