must be fraternal twin T4R

[TOY2G]

I have two 2003 T4R 4x4 V8s, one is silver and one is black. one is Limited one is SR5

Both have lifts 3", 285-0-17s, front bumpers with winch, roof rack, K7N drop in, and a few other common mods.

My silver T4R (Limited) has WAY more power than my Black one (SR5)
At hwy speed they both cruse fine, but when you smash on the skinny pedal the silver one darts out of its' skin. The black one goes okay but has very little excitement about it. From a stop the silver one even gets up to speed faster. Both have between 140 and 150 thousand miles on them.

Any one here ever driven two of these and had a similar problem. My sequoia even as heavy as it is has more get up than the Black T4R. I keep up will all service and since both are the same in miles they get the same service at the same time now, ie tranny flush, spark plugs, oil, exc.

IDEAS?

 

[ThreeFiveO]

It could be that the black one has "learned" a different driving / shift pattern. You could pull the ECU fuse on the black one to clear the memory and see if it makes a difference.

 

[TOY2G]

I will try that, thanks.

 

[LovesBass]

clear your previously stored "adaptations" - then you have to drive it like you stole it for a little while. learned this trick from a bmw shop foreman in va beach

 

[kylebacc]

It's the paint

I'd also try resetting it. Post up your results.

 

[TOY2G]

Here is what I did,

I pulled EFI fuse and left out for about 2 min ( went to get scan tool from shop) put it back in. Next I hooked it up to may OTC Scanner (not code reader) In live data I looked for misfire rate, TPS percent, and air flow rate. I then hooked it up to my other 4Runner and in a two min cycle teh one with the better MPG had 2 misfire in cyl 3. other than that everything was pretty close, TPS at idle 12.2 and 12.4, air flow rate at 2000rpm 82 and 87 I am assumeing Gal per min. Nothing should be causing such a differance.

Just wanted to let you know what I had done, FYI it has been two weeks since I did this and long term nothing has changed.

 

[kylebacc]

That is so weird. I wish I could be of more help but I just don't know stuff like that. You sure they are setup exactly the same? Maybe one needs like a re-ground or something? Just shooting ideas here, I have nothing to base these things off of :/

 

[glock56534]

Try cleaning your MAF sensor, inside your intake tube, and cleaning your throttle body. After cleaning, then pull the EFI fuse for a bit and see if that helps.

A friend of mine had a similar problem with his 2005 SR5 V8 4x4 (same as mine). He drove mine and said mine was much more responsive and felt faster than his. His is bone stock aside from a K&N drop in and has removed the hydrocarbon filter in the lid of the intake. Mine has a 3" lift and I'm running 32" tires and I have a couple other minor mods, but nothing that should cause that much of a difference.

We cleaned his throttle body, intake, and MAF sensor and his "problems" were solved.

If that doesn't work, maybe try replacing the spark plugs.

Hope this helps.

 

[JB.]

I'd get another driver and find a place to get side by side for an acceleration test. Put them both in 2nd or 3rd at a high enough rpm that they won't down shift when the pedal is mashed. That would isolate any engine difference. After that, you could do the same test at increasingly slower speeds to see if one had a noticeably more aggressive down shift point. If it's a shifting thing, then the answer lies in the intellingent transmission, as noted.

If the engine test confirmed a difference, I'd start looking for reasons that maybe the throttle isn't opening all the way on the slower one. Maybe even a floor mat or something.