Kevin91Z

iTrader: (1)

How does the computer know what gear the manual trans is in? I see nothing in the trans other than the reverse light switch, and thats only hooked up in reverse. The shift light will come on when the trans is in 1st, 2nd, 3rd, or 4th, but not 5th. So how does it know when I'm in 5th?

------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

Tom Keliher

I am guessing here. But I think the "upshift" light is a function of RPM, not gear selection or mph.

------------------
FORMULA 350 TK
Southern California 3rd Generation F-Body OrganizationŠ

89BlwnRs

I have to disagree Tom, I can get my light to come on at any RPM when the engine is not under too much load, except in 5th gear. I know the light comes on around the redline (can't remember at exactly what RPM) in any gear to tell you to shift, but I haven't been able to try that in 5th for obvious reasons.

Jason

99Hawk120

It calculates the gear ratio based on RPM vs. MPH. With a stick shift that's easy to do.

CAGS in 4th-gens is done the same way.

------------------
"Beware he who would deny you access to information, for in his heart, he dreams himself your master"

'84 Black Camaro ZZ4 M5 (V-6 in a former life) -- street beast
'91 Medium Blue Metallic Z28 A4 (UB-HSTRY's old ride) -- currently broken
'99 Navy Blue Metallic Firehawk #120 M6 (99.44% stock) -- daily driver

Kevin91Z

iTrader: (1)

The shift lite will come on at 4900 RPMs in any gear, according to my manual. It works great for the track as I shift at 5000.

Hey Ron, new name eh? Thanks for the info. My Diacom shows me RPM/MPH so that would make sense.

[This message has been edited by Kevin91Z (edited January 25, 2001).]

99Hawk120

Kevin, yeah, I haven't been able to get the password for my old account reset or the account deleted, so I just made a new one.