From 18mpg to 16mpg after Seafoam, Undercover, and New Tires?

Is the gas you are using 10% ethanol? I've noticed and read other posts where the mixed gas decreases mileage.

 

Thanks for the information. Did you actually take yours all the way off also? I see that some people do and some people don't.

I swear there was another link that actually showed pictures step by step including removal of what bolts and stuff of the throttle body on our engine?

 

I try hard to make sure that it is not, but I can't say that all are not.

 

Not sure I've seen that write-up. Once you take the intake off and actually look at it you will see its not bad to take off. 4 hoses total, and 4 bolts.

I took mine completely off. I felt it necessary to thoroughly clean it.

 

Thanks. I think I found it. How does this look for descriptions?:


http://www.4runners.org/writeups/throttle/index.html

 

I didn't mess with the MAF.

That doesn't show removing the Throttle body, but in the pictures you can see the hoses and bolts that need to be removed.

 

http://www.tacomaworld.com/forum/technical-chat/50153-how-cleaning-throttle-body.html

 

Attached is the TB removal procedure from the 2003 FSM.

 

Thank You!. I haven't seen anywhere else but this document to Drain Engine coolant. Is it necessary?

Also, I have dug through many threads about to replace factory metal D ring with TRD O-Ring. I am not going to do it because it doesn't seem increas mpg or hp enough to warrant finding one. Everyone agree?

Also, I found a very detailed thread with TB removal here:

http://www.yotatech.com/f2/throttle-body-cleanout-write-up-w-pics-194300/

 

I actually fouled a couple plugs doing seafoam on my truck had a rough idle went ahead and changed plugs to NGK's....but from what ive noticed from what everyone says I seem to get worse mileage than what everyone seems to say they get was getting maybe 256 to a tank when it was stock after seafoam was when I started watching my mileage so not sure what it was before... now getting 200-220 to tank with mods..I know the mods is what killed my mileage but curious my 256 stock was only 16mpg and I do almost all highway driving and a mild foot anyone else in same boat as me never changed FF just keep forgetting but sure thats not the mileage problem, have 84k miles on the truck.