At idle it misses. Up to speed runs smooth. Every now and then it hick ups/jerks. Engine light comes on. Codes said Crank shaft sensor, so I changed it. It didn't help. The other code said misfire #1 cylender before 1000 rpm's. Changed wires, plugs, fuel filter.
What can I try now? on 2006 Ford Ranger
by panfish in Covington, GA on May 18, 2013
2 answers 5 comments
ANSWER by gearhead89 on May 18, 2013
oh sounds like fords typical two piece spark plug. take it to a reliable garage and have them show you the old plug. put in N.G.K version. the misfire is a false reading. they have been known to throw spark plugs.
changed plugs and no change
COMMENT by gearhead89 on May 20, 2013
that's the two piece plug I was talking about those plugs jam in their right away and snap when you pull them out k.d tool makes a thread repair kit for it. I work at a parts store that has a machine shop and we see this all the time
COMMENT by pushrod on May 21, 2013
Not on this engine! Talk to the mechanics in the shop. Triton 5.4L 3 valve if you dont know how to remove them then yeah you can break the factory installed plugs, then it becomes a "two piece" (or more) plug.
ANSWER by pushrod on May 19, 2013
Idle speed only misfire sounds like a vacuum leak or low compression! After you changed plugs and wires did it run any better at road speed? Use Motorcraft parts? Code PO301?
Yes one code was po301 and the other one po316. no it run the same yes i used motorcraft.and some times it misses and jerks between 1500 and 2000rpm before shifts
COMMENT by pushrod on May 19, 2013
301 can set 316 check for vacuum leak or low compression on cyl. 1.
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