speedometer

[unkn0wn]

does disconnecting the speedometer really improve gas mileage?

 

[Attila_Da_Hun]

where did you here that! The answer is no.

 

[GilesGuthrie]

[Facetious]I thought it made it worse? I mean, you use lots of fuel but your car's mileage doesn't increase![Facetious]

 

[Klostrophobic]

If your car is made before 1994, then no. If it was made during or after 1994, then yes.

 

[19xx]

I thought you're about to ask disconnecting the speedo makes cops come at you more for excessive speeding

 

[Cobraboy]

Tsk, you people know nothing! When u disconnec da speedo it maek u go fasta becoz da speedo is a big ass restricta on ur ca!!11!!1!1!

 

[1X83Z]

Originally posted by Klostrophobic
If your car is made before 1994, then no. If it was made during or after 1994, then yes.

The cutoff was August 12, 1994, so if your car was made (not sold, but made) before that date, then it has no effect.

Isn't that common knowledge?

 

[SS69]

i think thats only because if youre speedometer is what runs your odometer. so ur not really getting better mileage. its just not being counted.



i am the obvious captain

 

[Attila_Da_Hun]

Wait pre-1994 the speedo restricts?

 

[Rumple Foreskin]

Originally posted by Attila_Da_Hun
Wait pre-1994 the speedo restricts?

uhh, yeah...thats it

 

[Joey D]

I wouldn't recommend doing this though, how would you know how fast your going.

 

[Attila_Da_Hun]

Originally posted by Rumple Foreskin
uhh, yeah...thats it

how, isn't it just a little cable hocked up somewhere at the driveshaft?

 

[Rumple Foreskin]

Originally posted by Attila_Da_Hun
how, isn't it just a little cable hocked up somewhere at the driveshaft?

Dude, are you for real?

 

[Attila_Da_Hun]

What? Im confused. Am I for real? Am I stupid cause i don't know exactly how a speedometer is attached to the drivetrain?I didn't know that was suppost to be common knowlage. Don't be as ass.

 

[1X83Z]

Originally posted by BlazinXtreme
I wouldn't recommend doing this though, how would you know how fast your going.

Yeah really - even if disconnecting the speedo did improve gas mileage, you'd have to be an idiot to do it.

 

[Rumple Foreskin]

.deleted.

 

[Attila_Da_Hun]

whatever.

 

[Frustrated Palm]

The Speedometer (at least some that I know of) is run by a small (very tiny) oil line (like I said, not all). It measures speed based on the oil pressure or something like that. I think they do it electronically now (at least on some)...

 

[Bahbo]

i dont know what kind of speedo calculates speed from oil pressure but i know analog speedometers have a cable with a notched gear, thats turned by a worm gear(threaded like a screw)on the driveshaft, that spins a rotating wire inside the cable measuring the mph/kmh.

oh yah and digi speedos have a sensor mounted next to a gear in the tranny and as the teeth on the gear spin the sensor picks up on the speed of the gear and with a chip it translates it into mph/kmh

 

[Frustrated Palm]

Because the oil pressure gets higher the faster you go I guess. It was on the Speed Channel when I saw that about 6 months ago...

 

[Bahbo]

you'd think it wouldnt be very accurate if its measured from the engine and not the tranny, beings you could rev it in neutral and have the speedo climb
youd also have to have it prorammed for each gear because each gear runs at a diff rpm.

 

[Frustrated Palm]

Well dont ask me how it works, I only remember a little bit of it as it was 6+ months ago...

 

[unkn0wn]

thx guys, i just found out why my sister got her speedo d/c b/c it she wanted to stop the mileage meter from going too high lol

 

[GilesGuthrie]

Note to self: unkn0wn's sister is a law-breaking con-artist who is at this very moment commiting vehicle fraud.

 

[unkn0wn]

lolol

 

[Duke]

Originally posted by Bahbo
you'd think it wouldnt be very accurate if its measured from the engine and not the tranny, beings you could rev it in neutral and have the speedo climb
youd also have to have it prorammed for each gear because each gear runs at a diff rpm.

Actually, it's a sensor on the output shaft of the transmission, not on the engine itself. That way it accounts for what gear you're in automatically, because there is no variation in the gearing between the output shaft and the wheels.

So neutral revs show no speed increase, but spinning the wheels will.