07-17-2019, 10:47 AM
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#1
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engine miss
I have a 2011 Trail with 123k miles. I've had an intermittent engine miss for the past 6 months. the dealer couldnt find anything when it first started happening. no codes are displayed. Could I have an alternator going bad? reading 13.2v when running and AC on.
Thank, Dave
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07-17-2019, 10:49 AM
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#2
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Have plugs been replaced?
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07-17-2019, 11:09 AM
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#3
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engine miss
I just had my spark plugs replaced and am getting the same thing but consider mine more of a rough idle. Going to bring mine in next week and see what they say. Nothing wrong with the truck before the new plugs.
Keep you posted.
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07-17-2019, 11:49 AM
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#4
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I did new plugs, then put the old back in. dealer saw only 2 hits on Cyl #2, so I replaced that coil with factory. still does it.
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07-17-2019, 01:00 PM
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#5
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Quote:
Originally Posted by mikey's2010SR5
I just had my spark plugs replaced and am getting the same thing but consider mine more of a rough idle. Going to bring mine in next week and see what they say. Nothing wrong with the truck before the new plugs.
Keep you posted.
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Let us know. I have a somewhat rough idle as well, kind of sounds like a small muffled generator. I think its just age. I had a mechanic check mine out and he wasn't able to find anything but I would be curious what your issue might be. I have similar mileage to yours, I am about to turn over 130k miles.
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07-17-2019, 02:03 PM
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#6
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I'm at 176,000. I blame the slight rough idle on mine on the aging AC compressor. might be wrong, definitely wouldn't cause a miss. I'm interested in what you find as well. could be anything, bad gas, wires, injectors, etc.
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2012 Trail Edition |KDSS |BLACK| 265/70R17 C KO2's @ 44psi | 250,000+ miles |>Link To Inside Fishing Rod Holder Mod
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07-17-2019, 05:07 PM
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#7
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Quote:
Originally Posted by mikey's2010SR5
I just had my spark plugs replaced and am getting the same thing but consider mine more of a rough idle. Going to bring mine in next week and see what they say. Nothing wrong with the truck before the new plugs.
Keep you posted.
Sent from my iPhone using Tapatalk
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Quote:
Originally Posted by Fialdj
I did new plugs, then put the old back in. dealer saw only 2 hits on Cyl #2, so I replaced that coil with factory. still does it.
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Did you guys swap your coil packs too?
Spark plugs should come pre gapped but it's good to check. Factory spec is .0394-.0433.
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07-17-2019, 05:57 PM
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#8
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Interesting and Interested as i'm over 100k... Could this be a recall?
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07-19-2019, 10:51 AM
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#9
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Quote:
Originally Posted by Mutant138
Did you guys swap your coil packs too?
Spark plugs should come pre gapped but it's good to check. Factory spec is .0394-.0433.
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I swapped #2 & #4. I couldnt tell if the problem moved, but it still happened. since the dealer stated the miss was on #2 coil, I replaced that one. This is driving me nuts. Yes it does it more when the AC if on and maybe adding the headlights, which is why I'm thinking alternator.
Maybe a ground issue someone. Can anyone give me places to check ground connections beside the battery?
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07-19-2019, 04:13 PM
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#10
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I have a 2011 SR5 I bought new. At 60,000 miles had the plus replaced. Then at about 71,000 miles had a miss. Had the #4 Coil replaced and a new plug because water rust on the plug. Then immediately after that the truck missed again, not as bad but I was so pissed and had all the coils replaced. No problems now at 76,000 miles.
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07-19-2019, 06:57 PM
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#11
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I have a 2011 Trail with 105,000 miles. I haven't had a miss so I'll be watching this thread. Did you install the brand and type of spark plug recommended in the owners manual, Toyota part # 90919-01191/DENSO SK20HR11 (2010-2013 vehicles)?
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07-23-2019, 12:04 PM
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#12
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My truck goes in Friday to hopefully solve my problem.
Toyota replace my plugs in the 120k service (Toyota has done all the services).
Keeping my fingers crossed.
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07-23-2019, 12:51 PM
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#13
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I helped a friend of mine with this. After new plugs, he still had it. Started moving coils then replaced a couple. Ended up just replacing all six and he was back in business. His started around 110k miles.
Moral of the story... since all the coils are the same age, it may be far less frustration to just change all when the first one starts acting up. We spent multiple weekends over a couple of months trying to save some dough.
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07-23-2019, 03:47 PM
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#14
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Quote:
Originally Posted by Smitty19TRD
I helped a friend of mine with this. After new plugs, he still had it. Started moving coils then replaced a couple. Ended up just replacing all six and he was back in business. His started around 110k miles.
Moral of the story... since all the coils are the same age, it may be far less frustration to just change all when the first one starts acting up. We spent multiple weekends over a couple of months trying to save some dough.
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The time spent chasing these around every time is well worth the cost of replacing them all at the first sign of trouble.
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07-24-2019, 08:35 AM
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#15
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Quote:
Originally Posted by Fialdj
I did new plugs, then put the old back in. dealer saw only 2 hits on Cyl #2, so I replaced that coil with factory. still does it.
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You said the miss occurs whenever the AC is on...a failing AC compressor can cause a miss...anything the can cause the crank to slow down !!...PCM uses the crank sensor to detect misfires...I'd take it to diagnostic shop and let them scope the injectors and secondary ignition...may be even mechanical related !!...watch the first few minutes of the video !!
https://www.youtube.com/watch?v=D0LXtvY3Qdg&feature=youtu.be&t=6m50s
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