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1998 pontiac grand am tach wire location


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timmi 
Member - Posts: 18
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Joined: December 21, 2002
Location: United States
Posted: January 28, 2007 at 11:32 PM / IP Logged  
I am having trouble locating the tach/coil wire on this 1998 Pontiac Grand Am, 2.4L.
There is a link to a picture of the engine. Can someone please describe where to look for this white wire?
2.4 L engine
Thank you!
wlmpwlmp 
Copper - Posts: 59
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Joined: December 20, 2006
Location: Canada
Posted: January 29, 2007 at 11:04 AM / IP Logged  
the tach on that 4 banger is white in color and is located in a 16 pin harness located on the top right side of the engine.  i cant really see it in your photo link.  you can vertify you have the correct wire by using your dmm on 12 volt setting and start the engine it should read between 1 to 6 volts at idle, if you can give the gas a shot while testing this wire you will see the voltage increase and decrease in sync with the engine, verifying you have the right wire, if you are not sure. i hope this helps!!
WesMan
wiretapper 
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Joined: December 11, 2003
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Posted: January 30, 2007 at 12:16 AM / IP Logged  

wlmpwlmp wrote:
the tach on that 4 banger is white in color and is located in a 16 pin harness located on the top right side of the engine.  i cant really see it in your photo link.  you can vertify you have the correct wire by using your dmm on 12 volt setting and start the engine it should read between 1 to 6 volts at idle, if you can give the gas a shot while testing this wire you will see the voltage increase and decrease in sync with the engine, verifying you have the right wire, if you are not sure. i hope this helps!!

Don't forget to set the DMM to AC.1998 pontiac grand am tach wire location - Last Post -- posted image.

Big Dog 
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Posted: January 30, 2007 at 1:33 PM / IP Logged  

Guaranteed best tach source for 2.4L : CMP Camshaft Position Sensor. It's a BROWN / WHITE in a 3-pin plug.

1998 pontiac grand am tach wire location - Last Post -- posted image.

Prepare your future. It wasn't the lack of stones that killed the stone age.
KarTuneMan 
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Posted: January 30, 2007 at 4:16 PM / IP Logged  
Big Dog......thats cool......really cool. Where did you get the diagram?
Big Dog 
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Joined: May 02, 2002
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Posted: January 31, 2007 at 7:49 AM / IP Logged  

I have Mitchell 1998 pontiac grand am tach wire location - Last Post -- posted image.

I've ALWAYS used CMP in GM's and it's BROWN / white 99% of the time. Especially in GM full size trucks - stay away from the white. CMP is great in Sebrings and Intrepids and works wonders in some FORDs which they call the SPOUT, an acronym for SPark OUTput.

Prepare your future. It wasn't the lack of stones that killed the stone age.

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