2.7l has low power after rebuild.

Excellent! Things like that can drive a guy crazy!

 

Knock sensor.

 

And got it fixed before you had to take it to the dealership. It doesn't get much better than that, way to stay on it.

 

So the knock sensor being loose was causing the timing to be retarded because it was somehow mistaking it rattling [loose] for spark knock?

 

Hey Kite, are you still around?? My nephew's mechanic says there will be a check eng. light & code if knock sensor isn't working properly, Didn't you say yours had no codes, or no check eng. light.

 

Also you said happy to find a loose bolt. Is there a bolt that holds the knock sensor in pace, it looks like most just screw into a threaded hole, & I assume you just tightened your orig. up. I didn't see that you replaced your old one. Just trying to get story straight. Thanks.

 

No check engine light or codes. The knock sensor is bolted on and I just tightened it. The sensor looks like a thick plastic washer with a wire coming out of it. It definitely doesn't screw on.

 

How many miles did you have on your truck prior to the rebuild? I have pretty much the same truck as you, I have a little over 109K miles, and I know that one guy from the Southeast made it to 880K on his 2007 2.7L before replacing the engine, but I also know that's an usually high amount of miles even for a Tacoma.

 

Around 230k hard miles before rebuilding. Ran perfect, just burnt a lot of oil.

 

Couldn't help but notice after I posted that you were in BC...

Is that 230K in miles or kilometers?

 

230,000 Miles or 370,000 Kms

 

That's not bad! My truck has been very lovingly maintained and the engine shows no signs of wear after more than ten years and 109,216 miles (that's what I believe my odometer said before I went into work); I expect it'll be at least another decade before I come even close to you; I've been running full synthetic since 80K miles and changing the oil every 7,500 miles or so. I have a mechanic who says he'd put a junkyard engine in my truck for about $3,200 if I ever needed a new one.

 

Ya, a rebuild was a no brainer for me. A junkyard engine was roughly the same cost with no guarantee it wouldn't have the same problem. Plus it was a project I've always wanted to do.

 

Did you have remove the refrigerant from the A/C system when you redid the engine?

 

Nope, had a leak and was already empty.

 

Did you ever fix that? My truck developed a leak sometime in 2016 or 2017 and it ended up being the evaporator core; Almost $1,600 to fix!

 

Thanks Kite, sure sounds exactly like what my nephew's Taco is doing. He now has changed mechanics, the other one never got it fixed, & the new one says can't be the knock sensor or there would be codes & ck. eng light. Just wanting to know I wasn't missing something. Thanks , maybe we'll get it.