Upshift indicator arrow and verbage
Thread Starter
Race Director
Joined: Jan 2006
Posts: 10,039
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From: CA
Upshift indicator arrow and verbage
Here's one for you gurus out there.When I first turn the key to "ON",the upshift arrow lights,and the word "UPSHIFT",and the phrase"FOR BEST ECONOMY".But when I'm driving,sometimes just the arrow and "UPSHIFT" comes on,and sometimes the "FOR BEST ECONOMY"also lights,but not always.What's with that?They obviously must operate independently.What triggers them?The owners manual isn't much help,and neither is the FSM.If it's in there somewhere,it must be on one of those"BLANK" pages.
Pro
Joined: Sep 2006
Posts: 702
Likes: 2
From: Conyers Ga
I might be wrong and if I am I apologize in advance but it sounds like whats happening is that since all digital dash clusters are made with the same features, the upshift indicator is there for cars equipped with the 4+3 and not the auto. Kind of like the ABS light. Your car may not HAVE them but they are incorporated into ALL the dash clusters rather then make a hundred different ones.
Drifting
Joined: Jan 2002
Posts: 1,663
Likes: 139
From: Vail AZ
I just sold my '86 Z51, but with the stock computer chip only the "upshift" part of the writing would illuminate when shifting 99.999% of the time. IIRC, the "For best economy" would come on occasionally also, but I never could figure out why it did only very occasionally.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Direct quote from my 87 owners manual.
Automatic Transmissions
In Corvettes equiped with automatic transmissions the UPSHIFT light is used primarily as a reminder to shift to overdrive. The light will go on if the car is operated in "cruise" conditions above 40 MPH in "D","2" or"1" for 30 seconds. The light will gout when the transmission shifts into Overdrive or a hard acceleration is made.
The "UPSHIFT" light goes on immediately if excessive engine speeds are detected in a lower gear, This is to alert the driver that the shifter is in a lower gear and should be upshifted.
The "UPSHIFT" light may flash on momentarily during automatic upshifts at full throttle. This is considered normal.
Automatic Transmissions
In Corvettes equiped with automatic transmissions the UPSHIFT light is used primarily as a reminder to shift to overdrive. The light will go on if the car is operated in "cruise" conditions above 40 MPH in "D","2" or"1" for 30 seconds. The light will gout when the transmission shifts into Overdrive or a hard acceleration is made.
The "UPSHIFT" light goes on immediately if excessive engine speeds are detected in a lower gear, This is to alert the driver that the shifter is in a lower gear and should be upshifted.
The "UPSHIFT" light may flash on momentarily during automatic upshifts at full throttle. This is considered normal.
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Thread Starter
Race Director
Joined: Jan 2006
Posts: 10,039
Likes: 0
From: CA
Direct quote from my 87 owners manual.
Automatic Transmissions
In Corvettes equiped with automatic transmissions the UPSHIFT light is used primarily as a reminder to shift to overdrive. The light will go on if the car is operated in "cruise" conditions above 40 MPH in "D","2" or"1" for 30 seconds. The light will gout when the transmission shifts into Overdrive or a hard acceleration is made.
The "UPSHIFT" light goes on immediately if excessive engine speeds are detected in a lower gear, This is to alert the driver that the shifter is in a lower gear and should be upshifted.
The "UPSHIFT" light may flash on momentarily during automatic upshifts at full throttle. This is considered normal.
Automatic Transmissions
In Corvettes equiped with automatic transmissions the UPSHIFT light is used primarily as a reminder to shift to overdrive. The light will go on if the car is operated in "cruise" conditions above 40 MPH in "D","2" or"1" for 30 seconds. The light will gout when the transmission shifts into Overdrive or a hard acceleration is made.
The "UPSHIFT" light goes on immediately if excessive engine speeds are detected in a lower gear, This is to alert the driver that the shifter is in a lower gear and should be upshifted.
The "UPSHIFT" light may flash on momentarily during automatic upshifts at full throttle. This is considered normal.
Is this a road speed to tach ratio or what? I know what triggers the the "UPSHIFT" light.But what makes the rest of the words light up?
I guess I may have to consult Gordon Killibrew on this one.It may be worth the money just to find out why.
Thread Starter
Race Director
Joined: Jan 2006
Posts: 10,039
Likes: 0
From: CA
I just sold my '86 Z51, but with the stock computer chip only the "upshift" part of the writing would illuminate when shifting 99.999% of the time. IIRC, the "For best economy" would come on occasionally also, but I never could figure out why it did only very occasionally.
