1991 Camaro RS - Tach Pegged Out when running
02-20-2008, 11:01 AM
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Car: 1991 Camaro RS Convertible
Engine: 305ci
Transmission: 4-Speed Auto
Axle/Gears: 2.73
1991 Camaro RS - Tach Pegged Out when running
Any reason why when the car is off the Tach sits at "0" but when running, it pegs right out, even though the car is idling fine?
Bad Tach?
1991 Camaro RS
Steve C - RI
Bad Tach?
1991 Camaro RS
Steve C - RI
02-20-2008, 11:20 AM
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Car: 88' Camaro IROC-Z
Engine: 383ci TPI
Transmission: 700R4
Axle/Gears: stock
Re: 1991 Camaro RS - Tach Pegged Out when running
Yeah, one of the resistors in it went bad.
02-21-2008, 06:05 PM
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Car: 91 RS, t-topped, man trans.
Engine: 350cid 350Hp crate motor
Transmission: t5 with new stock clutch and parts
Axle/Gears: 3.08 stock -RS
Re: 1991 Camaro RS - Tach Pegged Out when running
same here.
02-22-2008, 01:56 PM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: 1991 Camaro RS - Tach Pegged Out when running
If it's always pegged out with the key on, it could be a bad driver circuit. Those are not used anymore so they are hard to find but it's still repairable. I can look if I can find one online.
Lou
Lou
03-11-2008, 12:22 PM
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Car: 1991 Camaro RS Convertible
Engine: 305ci
Transmission: 4-Speed Auto
Axle/Gears: 2.73
Re: 1991 Camaro RS - Tach Pegged Out when running
Ok.... here it is
The Tach is pegged when the car is off or when you first turn the ignition on.
When you go to turn the car over, the tach returns to zero RPMs, but as soon as it starts, it pegs right out again.
Bad tach?
Steve C - RI
The Tach is pegged when the car is off or when you first turn the ignition on.
When you go to turn the car over, the tach returns to zero RPMs, but as soon as it starts, it pegs right out again.
Bad tach?
Steve C - RI
04-08-2008, 10:10 PM
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Car: 1991 Z28 Camaro
Engine: 5.7L V8
Transmission: auto
Re: 1991 Camaro RS - Tach Pegged Out when running
I just bought a cluster off ebay and my tach does the same thing!! I bought it because my temp gauge was off and being an automatic, I don't really need the tach, but I would like to to work correctly.
Any help with fixing it would be appreciated- I still have the old cluster for spares if needed...
Any help with fixing it would be appreciated- I still have the old cluster for spares if needed...
04-09-2008, 01:05 PM
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Car: 1991 Z28 Camaro
Engine: 5.7L V8
Transmission: auto
Re: 1991 Camaro RS - Tach Pegged Out when running
Update: Since the tach worked on my old cluster, I simply pulled the tach circuit board from it and swapped it into the replacement cluster. Works perfectly! 21 minutes to access the cluster, swap boards and button it all up!
Suggestion: anyone that has torn down a 3rd gen and had a working tach, pull the board and make it available on the site- obviously you will have a buyer or 2, given that the dealer wanted to sell me a new cluster for $700!
Suggestion: anyone that has torn down a 3rd gen and had a working tach, pull the board and make it available on the site- obviously you will have a buyer or 2, given that the dealer wanted to sell me a new cluster for $700!
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04-09-2008, 01:32 PM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: 1991 Camaro RS - Tach Pegged Out when running
Good job!
Now that you have a bad driver board, would you be willing to donate it for good purposes? I would like to investigate whether it's possible to fix/revive these broken driver boards. I can adjust a working one but not sure how to fix a dead board.
Lou
Now that you have a bad driver board, would you be willing to donate it for good purposes? I would like to investigate whether it's possible to fix/revive these broken driver boards. I can adjust a working one but not sure how to fix a dead board.
Lou
09-14-2008, 06:29 PM
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Car: 1991 Camaro
Engine: 3.1L v6
Re: 1991 Camaro RS - Tach Pegged Out when running
Yeah, i've got the same problem
Only, mine stays pegged out even with the key off...when i crank, it jumps to 0 then goes around the tach until it pegs out again...in cold weather i can time when my car starts (it starts when the tach hits about 5500)
being an automatic, it's un-needed...but i'd like to have it working =/
Only, mine stays pegged out even with the key off...when i crank, it jumps to 0 then goes around the tach until it pegs out again...in cold weather i can time when my car starts (it starts when the tach hits about 5500)
being an automatic, it's un-needed...but i'd like to have it working =/
09-15-2008, 09:54 AM
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Car: 1990 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: stock
Re: 1991 Camaro RS - Tach Pegged Out when running
mine goes to 0 when cranking then jumps up to about 4500 rpm for a couple seconds before finally pegging out
04-13-2010, 01:42 PM
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Car: 1982 z28/rs... haha
Engine: 305(now) 333(soon)
Transmission: 350 3-speed automatic
Axle/Gears: 3.45 limited slip 10 bolt
Re: 1991 Camaro RS - Tach Pegged Out when running
i got the same problem on my '82 z28
yall know any good ways to just fix it directly and not super expensive?
thankss
yall know any good ways to just fix it directly and not super expensive?
thankss
04-13-2010, 01:47 PM
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Car: 1991 Z28
Engine: 5.7 TPI
Transmission: 700R4
Re: 1991 Camaro RS - Tach Pegged Out when running
My previous response says it all. Go to a junk yard, pull a cluster- actually you don't even have to pull the cluster, just the bezel assembly- remove the circuit board(about 2 1/2 inches by 1 inch) and swap it into your cluster. If the new board is good it should cure the problem...
04-15-2010, 06:56 PM
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Car: 1982 z28/rs... haha
Engine: 305(now) 333(soon)
Transmission: 350 3-speed automatic
Axle/Gears: 3.45 limited slip 10 bolt
Re: 1991 Camaro RS - Tach Pegged Out when running
where is the circuit board at?
04-17-2010, 07:50 AM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 1991 Camaro RS - Tach Pegged Out when running
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