ECT - who uses it?
02-02-2005 | 09:24 PM
#62
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From: springfield, mo
Does'nt the skinny pedal input have something to do with mpg....i.e. if you don't have ect on and are accelerating up a hill from a stop and you apply more accelerator than yo need for the anticipated task won't that "flood" the fuel delivery system leading wasted fuel or am I thinking carburetor here?
02-03-2005 | 07:58 AM
#63
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Joined: Jan 2005
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From: Cape Cod, MA
Originally Posted by L33T35T 4Runner
ETC - electronicly controlled transmission. normal transmissions are controlled by a valve body... basicly a bunch of tubes and pressure sensors inside your transmission, and that manually shifts your transmission by clamping down on different gears. when you turn the ETC button on, a tranny computer takes over and shifts the transmission when it sees fit, which would be at higher RPMs. also, when ECT is on, it keeps the torque converter unlocked for longer times, as it wont lock up until it hits a steady speed in 4th gear.
I dunno. 
02-03-2005 | 05:02 PM
#65
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Joined: Dec 2002
Posts: 9,048
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From: Seattleish, WA
Two things...
- 320 miles to a tank? OMG! I'm getting about 180, down from my "before 'something happened' norm of about 240. (I'm working on what that "something" is. It's not any of the usual suspects)
- It's REALLY hard to judge MPG by saying "I hit ___ miles at the 1/4 tank mark". The fuel gauge is incredibly non-linear and you wouldn't see 15/20 miles either way depending on what end of the scale you're at. The next time you fill up, just take the reading from the trip odometer and divide it by the number of gallons that the pump says you put in. So, 200 miles and 14 gallons would be... 200/14 = 14.29 miles per gallon. That also automatically adjusts for the different size fuel tanks that I'll bet we have.
And oh.. the original thread topic!
I used to have the ECT button engaged all the time. But my kickdown cable is foobar and the higher shift points were causing issues after I put on the supercharger. So now I run with it off, and my shifts are much more "normal".
- 320 miles to a tank? OMG! I'm getting about 180, down from my "before 'something happened' norm of about 240. (I'm working on what that "something" is. It's not any of the usual suspects)
- It's REALLY hard to judge MPG by saying "I hit ___ miles at the 1/4 tank mark". The fuel gauge is incredibly non-linear and you wouldn't see 15/20 miles either way depending on what end of the scale you're at. The next time you fill up, just take the reading from the trip odometer and divide it by the number of gallons that the pump says you put in. So, 200 miles and 14 gallons would be... 200/14 = 14.29 miles per gallon. That also automatically adjusts for the different size fuel tanks that I'll bet we have.
And oh.. the original thread topic!
I used to have the ECT button engaged all the time. But my kickdown cable is foobar and the higher shift points were causing issues after I put on the supercharger. So now I run with it off, and my shifts are much more "normal".
Last edited by midiwall; 02-03-2005 at 05:03 PM.
02-03-2005 | 05:57 PM
#66
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Joined: Jun 2004
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From: Lilburn, GA
Originally Posted by TRunner
Sounds like you are running on only 5 cylinders or have some restrictive airflow... Back when I started this thread, I was starting to burn out an exhaust valve and had no clue for quite some time. My catalytic converter was starting to go bad as well. An easy way to test that is to pull you O2 senser and take it for a spin. You will notice an instant difference if that is becoming a problem.
02-03-2005 | 10:43 PM
#68
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From: Seattleish, WA
Originally Posted by Vato Loco
I'm not sure if its rare or not but when I have the ECT on and punch the gas off the line...I chirp the tires in 1st & 2nd gear....is this rare?
I can't do that and I'm S/C and all sorts of things!
fwiw, ECT "shouldn't" make a difference off the line. Are you sure it does?
02-04-2005 | 06:17 AM
#69
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Originally Posted by SD70MAC
I know it doesn't have a misfire or a dead cylinder (thank goodness!). But the engine is completely stock right now, that might have something to do with it. Also having 31" tires and being at 7200' probably doesn't help too much either.
In any case, it sounds like you may have a bad catalytic converter. Remove the O2 sensor and see how she runs. If you notice a change, it is time for a new cat. If you don't do this before your trip, you are likely to burn out exhaust valves, warp your heads, or cause other damage from excessive heat that cannot escape.
I WOULD HIGHLY SUGGEST FIXING THE CAT BEFORE THE TRIP IF THAT IS THE CASE!!!! That is a long trip!
02-04-2005 | 02:32 PM
#70
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From: Hamilton, ON
Originally Posted by midiwall
YES! (the motor's stock? no s/c?) YES! YES!
I can't do that and I'm S/C and all sorts of things!
fwiw, ECT "shouldn't" make a difference off the line. Are you sure it does?
I can't do that and I'm S/C and all sorts of things!
fwiw, ECT "shouldn't" make a difference off the line. Are you sure it does?
Tires still have plenty of tread left, so maybe I am one of the few lucky ones. 
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