Ignition coils

So I have a 2016 Toyota Tacoma TRD sport and I replaced all my ignition coils. Because one going bad and then the other one so I decide replace all of them. The truck was good for a while until I took it off road and was hauling ass then my check engine light came on. I took it to AutoZone so they can check the engine light and they said it was my ignition coil Number 3 and 5 and I also changed all the spark plugs to some good Long lasting spark plugs.

So my question is why is my ignition coils going bad can anyone help me my truck has 53,000 miles.

 

Luck of the draw, electronics are always a coin toss.

 

What ?

 

What was the code? Cylinder misfire? If so, it was probably bad spark plug(s).

 

I don’t know what’s the code but, the cylinder that’s misfiring is 3 and I think 5 to. I already replaced all the spark plugs Like 3 weeks ago with some better ones then then original ones.

 

Question: did you trade one coil with another and see if the code changed? While it's totally possible that lady luck looked unfavorably upon you, 53K is way early for a coil to go bad. They are usually pretty solid. IMO, I would thing a bad spark plug or connector to the coil would be the issue.

Also, OEM plugs are the best ones for our engine. I don't know of a better plug than the original OEM copper one for reliability and performance.

 

Define "better then the original ones". Spark plugs are not just something randomly chosen from a list. There are different temps, gaps, electrode styles, etc. which all change how the plug performs. Unless its a tuned/built engine and your builder states to use something different you should be using what was described in the service manual.

Spending hundreds if not thousands on parts to blindly try and fix a problem is not how you are going to solve this. Read this: https://www.autoserviceprofessional...lug-ignition-the-art-of-cop-misfire-diagnosis you will need techstream. If you cant do this, or dont understand it just bring it to a shop (not a dealer) and tell them you have a miss fire. Dont clear the codes, leave them so they have something to work off of. If you can pay for techstream you can also pull toyotas official service info for troubleshooting the ignition system for this truck.

 

Anybody know the cylinder numbers so I can replace my crappy 2016 ignition coil too

 

Those should be under warranty still. I'd put the OEM ones back in and have the dealer diagnose/fix.

 

Hopefully you used the OEM coils. There are a number of things that can cause a cylinder misfire. I second taking it back to Toyota.

 

OEM coils.. warranty would be nice.. 67k miles

 

I already changed the plugs. This pos has had a rough idle since 25k miles. Took to the dealer 3 times.. no computer code until 67k then I got p303, check engine light, trac control. Lost power (went into limp mode)

 

Should have brought a tundra..

 

CPS would be my guess after reading about its failure here .

 

Thought about that too.. but CPS only one cylinder ?

 

Changed ignition coil today.. fixed the problem. Runs a lot better. Idle still isn't 100 percent smooth all the time.. but night and day difference

 

Geez... now Toyota's strategy is to throw you into limp mode when a misfire occurs? They really are trying to screw you dry now, no lube required by forcefully making you call a tow truck to pick you up and drop off the truck at a dealer now.

Replace the bad coil and move on with your life. Use Denso or OE coils. If one fails the rest will follow suit shortly after.

It appears that the modern electronics are being built more and more like crap now. This failure falls right in line with a Dodge Dart I ended up replacing one then shortly the rest of the coils (some 4000 miles later because a misfire came back on another cylinder) at around 45K... sometimes it is luck of the draw on how long that stuff will last.

 

What was the plug boot looking like and was there any carbon tracking on the plug or cracked ceramic? Some good dielectric grease is a must when installing plugs or coils.

 

12trd sport. The point of the forum is to share common problems.. (do I think) no kidding just replace . That is only partially the point. Sharing information on whether or not it fixes the problem or if there are more related problems is equally important. Additionally, you pay a bit of a premium when you buy a toyota based on reliability.. since this is my 3rd. Tacoma. Replacing ignition coils at 67k miles is a little aggravating. I realize I have to filter through all the obnoxious people to get feedback from people that are genuinely trying to help one another down.. just a few less obnoxious people would be nice.