I installed a magical MPG increasing switch today

Kinja'd!!! "Bandit" (2bandit)
08/08/2014 at 00:06 • Filed to: Emma

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By flipping said switch I get better fuel economy. This was the first real electric project on the car I've taken on by myself, usually I have my grandfather (who learned electronics in the navy in 'nam) help me. It's nice being able to drop my rpms by the flick of a switch. Torque converter lockouts are awesome.

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DISCUSSION (20)


Kinja'd!!! Alex from Toronto > Bandit
08/08/2014 at 00:11

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Is it hard to do?


Kinja'd!!! anothermiatafanboy > Bandit
08/08/2014 at 00:14

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further explanation for the idiots here, please.


Kinja'd!!! Bandit > Alex from Toronto
08/08/2014 at 00:16

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Well you see... The 700r4 I installed has one from the factory (they all do), I just never bothered to wire it up. The factory set up on the 1991 Caprice wagon my Trans came out of involved a vacuum switch, brake sensor switch, and some other complicated things. I said screw it and made a simple manual toggle switch.


Kinja'd!!! Bandit > anothermiatafanboy
08/08/2014 at 00:18

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The 700r4 trans comes from the factory with a converter lockout feature (torque converter matches engine speed and stays there) decreasing engine rpms due to slippage and decreasing heat. Factory there is a vacuum switch connected to the pedals that a automatically controls the locking, but in my frankenstein install, I just used a toggle switch.


Kinja'd!!! NotUnlessRoundIsFunny > Bandit
08/08/2014 at 00:21

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This is just awesome. Thanks for sharing, and for explaining.


Kinja'd!!! Bandit > NotUnlessRoundIsFunny
08/08/2014 at 00:23

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Is this sarcasm because here's an explanation: The 700r4 I installed has one from the factory (they all do), I just never bothered to wire it up. The factory set up on the 1991 Caprice wagon my Trans came out of involved a vacuum switch, brake sensor switch, and some other complicated things. I said screw it and made a simple manual toggle switc


Kinja'd!!! Alex from Toronto > Bandit
08/08/2014 at 00:26

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Seems easy enough


Kinja'd!!! NotUnlessRoundIsFunny > Bandit
08/08/2014 at 01:23

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No, actually it wasn't sarcasm, sorry if it came across that way. I was genuinely interested and appreciated your explanation. And I really do think it's awesome what you've done with Emma!


Kinja'd!!! GhostZ > Bandit
08/08/2014 at 02:29

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You've come along way since, what, 6mpg?


Kinja'd!!! Bandit > NotUnlessRoundIsFunny
08/08/2014 at 07:32

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Oh! Sorry, the internet doesn't convey tone very well


Kinja'd!!! Bandit > GhostZ
08/08/2014 at 07:33

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Close to it. I use to get 9


Kinja'd!!! uofime > Bandit
08/08/2014 at 09:04

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how does it work in during a normal drive?

can the transmission shift gears with the converter locked?

obviously you can't stop with it on right? Seems like you'd have to pay attention to what you're doing with that switch


Kinja'd!!! Bandit > uofime
08/08/2014 at 10:55

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You get up to crusading speed (4th gear), flip the switch and the converter locks. If you slow down too much with the switch on, you stall the engine. I don't think it will shift.


Kinja'd!!! uofime > Bandit
08/08/2014 at 11:05

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that's what I figured, but I figured I'd ask since automatic transmissions are all a little different and I don't claim to fully understand the operation of any of them


Kinja'd!!! Bandit > uofime
08/08/2014 at 11:22

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Well, on a different topic I wish it was a manual.


Kinja'd!!! uofime > Bandit
08/08/2014 at 11:25

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my understanding from your other posts on this article was that you installed this transmission yourself, was swithching to a manual more work than you were interested in doing or were there other factors in your choice?


Kinja'd!!! Bandit > uofime
08/08/2014 at 11:40

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I wasn't too concerned with the amount of work because to even get this Trans to fit I had to cut a driveshaft, move brackets, and mess with the engine. The big factor was cost. I would have to go out and buy all the required parts for the swap (all the plumbing, different pedals, a transmission, bell housing, new center console, etc). By my calculations that would cost around $2000 if I'm lucky. The transmission I installed was $75.


Kinja'd!!! Yowen - not necessarily not spaghetti and meatballs > Bandit
08/08/2014 at 15:54

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I will look forward to some new MPG numbers! You'll surely bust into the teens now? :D


Kinja'd!!! Bandit > Yowen - not necessarily not spaghetti and meatballs
08/08/2014 at 18:27

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I was getting 16ish before this switch. I'd like to see 18.


Kinja'd!!! Yowen - not necessarily not spaghetti and meatballs > Bandit
08/11/2014 at 09:36

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oh, that'd be pretty nice.