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02-18-2013, 02:49 PM
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Learning to use the forums
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Cylinder 3 misfire? Not plugs or wires.
Hey guys, have a 2001 3.0 Ranger, it was missing really bad so changed the plugs and wires and started running better but it still misses when it is idling or I am pulling away. Could it be the coil?? Any other ideas?
Thanks!
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02-18-2013, 02:50 PM
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ford dealer parts guy
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Join Date: Apr 2011
Posts: 20,938
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Re: Cylinder 3 misfire? Not plugs or wires.
run a compression check across all cylinders
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2021 F150 5.0 Screw
Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0
Master Certified Ford Parts / Warranty Admin
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02-18-2013, 03:06 PM
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Former Ford Migrane Owner
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Join Date: Jul 2012
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could be a coil pack, you could have cracked a plug putting them in (the tiniest nearly invisibile crack can do it), could have a bad wire in the bunch, maybe you put them in the wrong order or the boot isnt completely on the plug (mine were a pain in the a$$)
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HAD a 99 Ranger 4X4 3.0 flex, but I did the AWD Wagon Mod....now I am a proud owner of a Subaru Impreza wagon
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02-18-2013, 05:56 PM
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Learning to use the forums
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Re: Cylinder 3 misfire? Not plugs or wires.
Quote:
Originally Posted by Mattygb2128
could be a coil pack, you could have cracked a plug putting them in (the tiniest nearly invisibile crack can do it), could have a bad wire in the bunch, maybe you put them in the wrong order or the boot isnt completely on the plug (mine were a pain in the a$$)
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I checked the coil pack and it seems there's only sparks coming from 4 out of the 6, as I've changed the plugs and wires within the last week does this sound like the coil?
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02-19-2013, 11:02 AM
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Former Ford Migrane Owner
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Join Date: Jul 2012
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it still could be any of the above. its a pain in the butt but take each plug out and carefully inpect it. when you plug the boot on make sure you hear/feel that little popping into place noise. a coil pack will run you $80 at advance.
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HAD a 99 Ranger 4X4 3.0 flex, but I did the AWD Wagon Mod....now I am a proud owner of a Subaru Impreza wagon
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02-19-2013, 11:17 AM
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Ford Ranger Driver
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Join Date: Jan 2009
Posts: 6,268
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Re: Re: Cylinder 3 misfire? Not plugs or wires.
Quote:
Originally Posted by tmartin89
I checked the coil pack and it seems there's only sparks coming from 4 out of the 6, as I've changed the plugs and wires within the last week does this sound like the coil?
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If the 2 cylinders that do not have spark are 3 & 4 then replace the coil pack.
The cylinders pairs are 1/5,2/6,3/4
SFDROIDBIONICUT2
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)
2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
Last edited by modelageek; 02-19-2013 at 11:19 AM.
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02-19-2013, 02:58 PM
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"Race Internals"
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Join Date: Aug 2010
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Re: Cylinder 3 misfire? Not plugs or wires.
sounds exactly like what i had when my coil pack went bad, only had a missfire on one cylinder but boy did it idle rough.
i bought a new accel super coil coil pack, from jegs i think, for a tad less than the auto parts chain's coil packs. solved the problem and the truck has been running great for a year or so
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2000 XLT 4X4, 3.0, Auto, regular cab - throttle cable mod, K&N drop in filter, taylor thundervolt 8.2 plug wires, autolite sparkplugs, Accel coil pack, AVS Ventshades, Rampage LED tailgate light bar, BFGoodrich All Terrain T/A tires, Trail F/X toolbox, cruse control pod light fix, Cobra 19 ultra II CB, lil wil antenna, pioneer door speakers, expo woodgrain radio bezal, 06+ mirrors & tails, powerdome hood
2000 XLT 4X4 Offroad, 4.0 / auto, supercab - the project truck!
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02-19-2013, 03:20 PM
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Learning to use the forums
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Join Date: Feb 2013
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Re: Cylinder 3 misfire? Not plugs or wires.
Quote:
Originally Posted by modelageek
If the 2 cylinders that do not have spark are 3 & 4 then replace the coil pack.
The cylinders pairs are 1/5,2/6,3/4
SFDROIDBIONICUT2
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It was 1 and 3 that was misfiring. I changed the coil pack and there's still a slight miss. Guess i'll need to take out the plugs.
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02-19-2013, 04:58 PM
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Former Ford Migrane Owner
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Join Date: Jul 2012
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when your done with that (if they all look good...LOOK CLOSELY) take off each wire one by one from the coil pack. its easy and a 5 minute check. Take any 1 wire off, see if the truck idles rougher (it should), then replace it. You may also see an electric spark/current running from the coil pack to the removed wire. Thats fine, your safe. It wont touch you unless you touch it first. Return the wire its spot and remove another. Repeat for every wire.
If it does not run rougher or you do not hear/see the electric current, that single wire or plug is bad and you have pin pointed the cylinder with the problem.
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HAD a 99 Ranger 4X4 3.0 flex, but I did the AWD Wagon Mod....now I am a proud owner of a Subaru Impreza wagon
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02-19-2013, 06:12 PM
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Learning to use the forums
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Join Date: Feb 2013
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Re: Cylinder 3 misfire? Not plugs or wires.
Quote:
Originally Posted by Mattygb2128
when your done with that (if they all look good...LOOK CLOSELY) take off each wire one by one from the coil pack. its easy and a 5 minute check. Take any 1 wire off, see if the truck idles rougher (it should), then replace it. You may also see an electric spark/current running from the coil pack to the removed wire. Thats fine, your safe. It wont touch you unless you touch it first. Return the wire its spot and remove another. Repeat for every wire.
If it does not run rougher or you do not hear/see the electric current, that single wire or plug is bad and you have pin pointed the cylinder with the problem.
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Looks like O'Reilly's gave me a bad coil! I unplugged the wires and this time 5 was missing! Took the coil back and got a new one and it seems to be running smoother, I'll take it a drive later and see how it is!
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02-20-2013, 06:28 AM
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Former Ford Migrane Owner
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Join Date: Jul 2012
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Quote:
Originally Posted by tmartin89
Looks like O'Reilly's gave me a bad coil! I unplugged the wires and this time 5 was missing! Took the coil back and got a new one and it seems to be running smoother, I'll take it a drive later and see how it is!
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Hope you found the culprit.. Keep me updated! And dont blame O'Reillys, they just sell em, they dont make em. haha
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HAD a 99 Ranger 4X4 3.0 flex, but I did the AWD Wagon Mod....now I am a proud owner of a Subaru Impreza wagon
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02-20-2013, 01:53 PM
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Learning to use the forums
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Join Date: Feb 2013
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Re: Cylinder 3 misfire? Not plugs or wires.
Well it looks like the missing has gone but now when I put it in park and rev the engine it only goes up to 3000rpm and starts shaking yet it drives fine, any ideas with this? One thing gets fixed then another goes! 
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02-20-2013, 02:15 PM
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Learning to use the forums
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Re: Cylinder 3 misfire? Not plugs or wires.
Quote:
Originally Posted by Mattygb2128
Hope you found the culprit.. Keep me updated! And dont blame O'Reillys, they just sell em, they dont make em. haha
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I had my suspicions as it said "no good" on the box lol but the missing has gone but now when I rev it up in park it only goes up to 3000rpm and starts shaking.
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02-20-2013, 02:42 PM
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Liking the Ford Ranger Forum
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Join Date: May 2012
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Re: Cylinder 3 misfire? Not plugs or wires.
Just a wild guess saw a jeep with a 6 cylinder in it that had a miss on cylinder 3 it had a broken valve spring
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87 ford ranger stx. K&N air filter, cab lights, L.E.D. tailstrip
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02-20-2013, 02:50 PM
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Former Ford Migrane Owner
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Join Date: Jul 2012
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Quote:
Originally Posted by tmartin89
Well it looks like the missing has gone but now when I put it in park and rev the engine it only goes up to 3000rpm and starts shaking yet it drives fine, any ideas with this? One thing gets fixed then another goes! |
and people wonder why i sold my Ranger. I feel ya brother. I am stumped on this one. I hope its not a broken valve spring like the user above me said
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HAD a 99 Ranger 4X4 3.0 flex, but I did the AWD Wagon Mod....now I am a proud owner of a Subaru Impreza wagon
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