Another Tach Issue
#1
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Location: Southern NJ
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Car: 1989 Iroc-Z Convertible
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73:1
Another Tach Issue
New to me 89 Iroc.
Tech doesn't work. Moves randomly, eventually pegs out.
I did the 200k ohm resistor across pins 4 and 10 of the resistor chip on the board, still nothing. That was broken but something else must also be wrong.
when I apply 12v to the b+ and gnd posts of the tach/oil gauge, the oil gauge will peg and respond to a resistor grounded on the sender post, but the tach doesn't move.
I re-flowed the solder on most or all of the components on the board.
how can I test the gauge itself so I know of a rebuilt control board will fix me up?
thanks.
Tech doesn't work. Moves randomly, eventually pegs out.
I did the 200k ohm resistor across pins 4 and 10 of the resistor chip on the board, still nothing. That was broken but something else must also be wrong.
when I apply 12v to the b+ and gnd posts of the tach/oil gauge, the oil gauge will peg and respond to a resistor grounded on the sender post, but the tach doesn't move.
I re-flowed the solder on most or all of the components on the board.
how can I test the gauge itself so I know of a rebuilt control board will fix me up?
thanks.
#2
On Probation
Re: Another Tach Issue
Heres a member that repairs our tachs:
https://www.thirdgen.org/forums/elec...-tach-fix.html
contact him and see if he can help.
https://www.thirdgen.org/forums/elec...-tach-fix.html
contact him and see if he can help.
#3
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Join Date: Oct 2017
Location: Southern NJ
Posts: 199
Likes: 0
Received 0 Likes
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Car: 1989 Iroc-Z Convertible
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73:1
Re: Another Tach Issue
Opening a new thread over in 'electronics'. Mods can shut this one down if they see it.
Thanks.
Thanks.