MSD causing Tach to jump
#1
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Car: 1989 GTA
Engine: 5.7 TPI
Transmission: A4
Axle/Gears: 3.23
MSD causing Tach to jump
Got the car running right but the MSD is causing my tach to jump all over the place once over 3,000 rpm, I can by-pass the MSD and the tach works fine. I've changed the rev limiter with the same results. Any ideas? Thanks!
#2
Originally Posted by pmpn
Got the car running right but the MSD is causing my tach to jump all over the place once over 3,000 rpm, I can by-pass the MSD and the tach works fine. I've changed the rev limiter with the same results. Any ideas? Thanks!
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Car: 1991Firebird T/A
Engine: 350
Transmission: Modified Viper t-56
Axle/Gears: dana 44, 3.55
i had this problem with running my tach off an 6a box... over 6200rpm or so, the tach would jump like cray to 8k and 0...i recently replaced my msd box with a msd dig 6+ box, and tach is dead nuts on...no more jumping...
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Car: 1989 GTA
Engine: 5.7 TPI
Transmission: A4
Axle/Gears: 3.23
It looks correct. Thank you Sir!
Originally Posted by gta324
YOu can buy a tach adapter from MSD part nbr 8910 ( I think, doublecheck!)
/N.
/N.
#6
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Car: projects.......
...my factory tach would drop to 0 any time I nailed the gas. Otherwise it would work fine. - My sport comp doesn't seem to care....one day I'll find out if the factory tach in my 96 dash will have it.
#7
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Car: 1989 GTA
Engine: 5.7 TPI
Transmission: A4
Axle/Gears: 3.23
Originally Posted by gta324
YOu can buy a tach adapter from MSD part nbr 8910 ( I think, doublecheck!)
/N.
/N.
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#8
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Car: Hers: 88 Formula 350
Engine: TPI
Transmission: Auto
Axle/Gears: 10 bolt Posi
Originally Posted by pmpn
Does this tach adapter actually work? Has anyone had good experiences with it?
or the tach filter needs to be removed
the formulas seem to need the tach adaptor
the camaros could get away with the tach filter or the tach adator
pluged right in too
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