Chevy Impala

Why doesn't my 2004 Impala SS tach work?

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2014-05-14 21:13:21
2014-05-14 21:13:21

Where is the tachometer on a 2004 chevy impala ss

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It should work ok if the wire for the tach under the hood is connected and I don't remember which one it is.


The speedometer doesn't work. It doesn't respond to the speed we are going.


my heater doesn't work in my 04 Chevy impala. My coolant levels are correct, and this still does not correct the problem. Could it possibly be the coil in the dash. If not what could problem be?


It should work. I have a 94 w/o a tach and put a LE version cluster with tach in. Works fine. There should still be a tach wire grouped into the harness plugs. Just unplug your old one and plug in the new one that's it.


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Tach is driven by a motor signal, speedo is from the trans the sensor is bad on the transmission




it doesnt work, it breaks it doesnt work, it breaks it doesnt work, it breaks


Providing there is 12 volts key on power, and a good ground supplied to the tach, the most likely culprit would be a faulty rectifier, from which comes the tachometer signal. Also, it may be a corroded or loose plug-in connection to the control box or key switch harness.


I have a 2003 Chevy Impala and I am bringing it to my mechanic, the dealer said it could be just a blown fuse and also may be the switch, i can get back to you on it. Deb


I have a vague recollection that the neutral start switch could be the problem.See "Related Questions" below for more


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


Replace your speedometer sensor. I just had mine replaced in my '04 Impala. The sensor tells the tranny when to shift. It's located right in front of the transmission.


MSD had a module a few years back that would convert a tach signal. Not sure hear da rumor about using a wire off the obdii port, but never seen anyone with a mitsu do it and work. Have seen the MSD tach adapter work superbly.


Yes, however, the six cyl tach is different from the eight cyl tach. It will work but the RPM display is wrong.


bad ground or bad sensor or a short


There should be a tach output connection on the side of the box somewhere, you just plug your tach pickup into that. If it doesn't work you'll need a MSD tach adapter. I'm unsure of the part numbers but there are 2 different ones, it depends on what you used to wire in your ignition. If you used the white wire there is one and if you used a magnetic pickup ( green and violet wires ) there is another one....MSD-8920. I have a sunpro tach and I had to go out and buy an adapter to make it work...for about 50 bucks.


For any of you who may have been watching this question, I'll give you the answer myself. The answer is YES. After purchasing the one with the factory tach and installing it, everything works like it should.


it doesnt work because your face in Tye's face


It is similar to frequency . IT reds Time in close contac.


no he doesnt they interviewed him on that channel but no he doesnt work there




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