So here's a brief synopsis of what's going on...

I had a Cylinder 3 misfire yesterday. I changed all spark plugs and that didn't fix it. I then changed the coil pack from Cylinder 3 to Cylinder 5 and the other back to cylinder 3 of course...ran like a charm. It's ran well until today when I was getting on the highway, Check Engine Light came back on.

Now it's a cylinder 5 misfire.

What's going on? A friend of mine says it could be the wires while I'm thinking it's the coil pack.

What do you all think??

I have a appt with my toyota dealership tomorrow to get it looked at, but I'd rather not spend the money there if I can fix it at the house.

Thanks!!

 

If you only moved the coil pack and not the wires, then its definitely a coil pack. Swap the coil pack, and save some $$. Depending on how old the wires are, a new set wouldn't hurt anything either.

EDIT: You can order the parts for cheaper from trdparts4u.com. They are prolly cheaper than the dealer new you including shipping.

 

But wouldn't the coil pack affect two of the cylinders??

 

Not always.......but warriors_03 is also not correct that it automatically means you have a bad coil pack either. There are alot of reasons for misfires and you need to do diagnosis to figure out exactly what the issue really is.

 

So is my best bet to get it down to the dealership for a diagnostic? It's $40, so it's not like it's a bankbuster.

Also, do you all think it's ok to drive it there?

 

MTL got me on that one...thats more of a gut reaction from me...

$40 bucks for a diagnose from the stealership? Damn thats cheap. Here it is $95...I would definitely do that then...

 

If you moved just the coil pack from 3 to 5 and the problem followed the coil pack, I would roll the dice and just get a new coil pack. The problem followed the part so in my opinion you can confidently swap it out.

 

My mechanic buddy said that since the truck ran fine for a while then it's probably the wire that connects to the coil pack. Since it would heat up and then not carry a good signal to the coil pack.

Should I try the wire first? Where can I get one of these?

Thanks for the help!

 

But if the wires were not swapped, then it would be a pretty odd coincidence that the original cylinder 3 problem followed to cylinder 5. If the only part that moved was the coil pack, then I would replace that.

 

What I'm actually talking about is the wire that comes from the coil pack to the spark plug.

 

And can you just get that wire that goes from the coil pack to the spark plug?? I can't get the wire by itself at Advance Auto.

Thanks!!

 

Well, I got a new coil pack and it works fine. Unfortunately all I needed was the boot that runs from the coil pack to the spark plug as I can see where the coiled wire inside is broken.

$70 bucks now is better than $40 bucks tomorrow and then spending money for parts.

Thanks for the help!

 

I got my coil packs off eBay dirt cheap and brand new. They seem to work great and have a 2 year warranty.

 

Ah. You were talking about the little "spring"/wire inside the boot. Gotcha. Glad you got it fixed.

 

Yup, had to be the plug wire since the coil pack gives spark to 2 cylinders, and you would have had 2 cylinder misfires if the coil pack was bad.

Save the old coil pack for a backup.

 

Is there anywhere that I can get that plug wire without the coil pack?