Missing... hard!
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Joined: Jul 2008
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From: Marietta, GA
Missing... hard!
My trusty old '00 4.0 4x4 is missing, really badly. All 6 spark plugs are new, wires within the last 50k miles. What potentially could cause this? Seems to be missing on 2 cylinders. Distributer? I went to NAPA to try to price a cap out but it seems that only a Ford part is available from the dealer.
Any advise would be a great help as this is my DD.
Any advise would be a great help as this is my DD.
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Joined: Jan 2004
Posts: 13,851
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From: SW Va
My trusty old '00 4.0 4x4 is missing, really badly. All 6 spark plugs are new, wires within the last 50k miles. What potentially could cause this? Seems to be missing on 2 cylinders. Distributer? I went to NAPA to try to price a cap out but it seems that only a Ford part is available from the dealer.
Any advise would be a great help as this is my DD.
Any advise would be a great help as this is my DD.
bazzman is right if you still have the OEM engine, as Rangers don't have a distributor anymore & haven't had one for some time now.
Do you have a CEL lit, or blinking, if so it's telling us that you have a misfire going on & if you do it needs immediate attention as it's dumping raw fuel into the cat converter & it'll overheat & be damaged if this is allowed to continue.
So seeing as how the plugs & wires have been messed with, raise the hood & with the engine OFF, make sure ALL the plugs are in tight & ALL the wires are routed as the factory had them, using all the factory wire looms & they are tighly fastened to the proper plug & coil pack position.
If all that checks out, then raise the hood & start the engine after it gets dark & see if you can spot any arcing & sparking from the coil pack all the way to the plugs.
If you still can't spot the problem & have a CEL lit, or blinking, consider running this puppy by your favorite autoparts store for a no cost computer trouble code scan, then post ALL the KOEO & KOER trouble code numbers found, BEFORE you replace any parts!!!!
Just some more troubleshooting thoughts for pondering. Let us know what you find.
Thread Starter
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New User
Joined: Jul 2008
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From: Marietta, GA
Problem solved guys. I took pawpaw's recommendation and went to NAPA and had the pull my CEL code. Misfire on cylinder #5 (which had missed in the past.) Bought a new set of wires, plugged em up and is driving better than it has for the last year.
Fleet Owner
Joined: Aug 2001
Posts: 29,941
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From: Drummonds, TN USA
Nice tip on the free trouble code reading - I didn't know they would do that for people!
(But then, I suppose whatever sells parts is a good thing)
(But then, I suppose whatever sells parts is a good thing)
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Joined: Aug 2001
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From: Drummonds, TN USA
When people let us know what finally worked - we ALL learn from it. That's important, especially if something odd and/or unexpected comes up.