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Tachometer not working after head and cam swap

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Old 02-22-2010, 11:19 PM
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Default Tachometer not working after head and cam swap

So I checked and double checked all connections and have not found anything unplugged. All gauges work on the dash except the tach. It doesn't move and actually decreases rpm slightly when I give it gas. Could I have hooked it up ... upside down or reversed the wires? Am I correct to believe that the tach signal is read off of the cam position sensor? There is a code that is being thrown so I will have to go to the parts store and see what it is.

Any help would be appreciated. Thanks
Old 02-22-2010, 11:30 PM
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I believe you answered your own question. Camshaft Position Sensor.

A friend had a mouse chew through the wiring going to his CPS while the car was in storage. Exact same issue. No Tach. He fixed the wiring and all is better.
Old 02-23-2010, 02:23 PM
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Talking Found the problem

I took off the intake and everything was fine. Just before going to the parts store to get a sensor, I searched more on this site and came across a post from 2004 with a few people who had the same problem.

I had disconnected and removed my EGR stuff. Right near that connection is another connection that when disconnected doesn't give you the Cam Position and results in a hard start and no tach indication while the engine is running. SES light is off and all is running well. This site rocks!
Old 02-23-2010, 06:30 PM
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Glad you got it figured out. Little things like that can be frustrating after something like a cam swap.
Old 02-23-2010, 09:15 PM
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Originally Posted by menardst
I took off the intake and everything was fine. Just before going to the parts store to get a sensor, I searched more on this site and came across a post from 2004 with a few people who had the same problem.

I had disconnected and removed my EGR stuff. Right near that connection is another connection that when disconnected doesn't give you the Cam Position and results in a hard start and no tach indication while the engine is running. SES light is off and all is running well. This site rocks!
Thats awesome, man!



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