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This is usually due to a bad ground on the instrument cluster.
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∙ 15y ago
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What would cause the tach on a '96 Ford F150 5 liter to jump?
Check the wire connections on the coil. If ok, the tach may be bad.
Can a disconnected or broken TACH wire from the HEI distributor cap cause a '79 trans am not to start?
Yes, a disconnected or broken TACH wire from the HEI distributor cap can cause a '79 trans to fail to start.
1984 Corvette tach don't work?
The tachometer is fed from the distributor coil. High voltage spikes are filtered on the wire to prevent damage to the electronic display. There is a tach filter attached to the intake manifold. Replace this filter and your tach will work again. Mid-America Motorworks Part #618-561
What would cause remote starter not to work under twenty degrees?
Check for a loose "Tach" wire
Why does your speedometer tach drop to zero and your check engine light all come off and on repeatedly when driving.?
Have it checked for codes, the code will tell you what to diagnose.
Does anybody know with a 96 s10 pickup that has no tach from the factory can you install a cluster that has a tach Will the connection be there for a tach if originally it did not have one?
theirs a green wire by distributer that is for the tach
How do you install the tach wire for a tachometer for a '99 Elantra?
IF you have the installation instructions for the tach, it prolly tells you where to attach the tach wire. If not, call the manu. of the tach or search for their website online.
Will replacing the Tach filter on a 1986 corvette fix a non-working tach everything in the cluster works but the tach?
yes
What could cause the stock tach in an 85 El Camino with 305 engine to read approx double the actual rpm of the engine when it used to work and nothing has been changed?
The Tach's connection could have become loose over time. Also, if the tach is original to the vehicle, it may just be damaged from age and need replaced.
Is there a tach cable or electrical sensor for 1989 V6 5-speed Cavalier Z24?
its electronic cause of the distributorless ignition.
Can you swap out an instrument cluster without a tach for one with a tach?
Yes you can
Can you swap out an instrument cluster without a tach for one with a tach?
Yes you can
