Opinions on ignition coils

Hi everyone.
I have just under 121000 miles on my truck. I put new plugs in last year when I replaced the value cover gaskets and the drive belt. Now I am wondering about replacing the ignition coils.

I am pretty sure I am sill rocking the original factory ones. I have read where some people believe that if they are still working then leave them alone. I have also read where some people have switched them out for ones from NGK.

Should I be thinking of changing mine, and what brand should I shoot for? Parts Geek and Rock Auto have a lot of brands, and I have been burned by off brand coils before. I know there are not cheap, and I will need 8 of them.

Let me know what you think. Thanks.

 

It's probably irresponsible, but I'm rocking the original ones at 275k. I've swapped out NGK plugs twice, getting ready for a 3rd time. I think changing coils is personal preference, I usually go by if it isn't broke don't fix it.

 

Never heard of swapping the coils prematurely. I don't know if I've ever had even one fail out of all my vehicles.

 

IMO Only use OEM coils. Check out Sparks or other online Toyota dealerships for the best price.
I would not change them until you start having a problem. They can last over 300K miles

 

Roll the OEM’s til one dies(you’ll get a misfire code). Its rare even 1 of 8 fails.

Then replace with OEM’s. Avoid aftermarkets.

Look elsewhere if you got the moar parts itch.

 

^^ This

I realize that this a Gen2 Thread...but my '02 SR5 V8 still has it's original Coils at 270k. The Spark Plugs were replaced earlier this year for the third time (80k to 90k average life). The plugs my dealer have been putting in are the Iridiums. When they were pulled, the plugs exhibited the wear that one would expect. This truck has never experienced any ignition issues. The plugs were replaced as a part of regular maintenance to keep the vehicle in optimum running condition.

OP...

If you're going to replace the Coils, I would use OEM Parts.

 

Sounds like good advice. Thanks everyone.

 

The only exception I would add is heat. If continuously in hot climates it does break down the dielectric properties and could induce a failure sooner than cooler climates.

I'd still wait for misfire or >225,000 miles or so...