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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 12-04-2010
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shaky engine and power loss

Hi, I'm new here. I thought I'd post online to figure out what's wrong with my truck because I can't seem to get any local mechanics to help me with it without getting fed a bunch of b.s.

This has been happening for at least a year.

I get an error code. It's a misfire on cylinder six. The CEL comes on, the engine shakes, I rev the engine or drive for a few miles and everything calms down. The caution light generally stays on. This happens everyday, more so when it is cold.

I have swapped out the plugs three times. There is no coolant on the plug. There is nothing I can see to be obviously causing the problem. No dripping, no leaks, no broken hoses or cracks or anything. Could it be a wiring issue?

It's a 99 Ranger, 3.0 lit V6. Good truck, but lots of problems since I got it.

Any help is appreciated.
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Old 12-05-2010
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Location: Melbourne, Florida
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check igniter wire to cyl 6, and the coil itself, the wire may not be making a good connection therefore intermittent spurts of fire and misfire. lastly I'd take the truck to a reputable "tuner" shop and have them delve into the trucks computer, it could simply be a mis-read that your engine is adapting for that is causing your perfectly fine engine to act up, just ideas, idk, not a pro by any means
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Old 12-05-2010
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i had the same problem on my 98 ranger it was the 6th cyl too. i had a guy look at it and al it was for me was the plugs. what kinda plugs you running? it could also be the plug wires
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Old 12-05-2010
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yep, check coil and all resulting wires to sparks, arent hard to replace and often give you a small boost in HP and TQ
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Old 12-19-2010
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I just had same problem.Hope its not as bad as mine.Turned out cylinder 6 had 0 compression.My truck had 180k on it.Traded it in on a 2010 Ranger Sport 4.0.Was sorry to see this truck go.Suoer reliable.
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Old 01-01-2011
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can you check spark with a timing light?
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Old 01-01-2011
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plug wires. coil pack. check those first. mine was like that and the cause was bad wire.
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Old 01-03-2011
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injector?

I had same issue with my 99 3.0. swapped coil pack, wires, new plug. ended up being the fuel injector. Cylinder #1.
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