1998 pontiac grand am tach wire location

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Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=89723
Printed Date: April 27, 2024 at 8:33 AM

Topic: 1998 pontiac grand am tach wire location

Posted By: timmi
Subject: 1998 pontiac grand am tach wire location
Date Posted: January 28, 2007 at 11:32 PM

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!

Replies:

Posted By: wlmpwlmp
Date Posted: January 29, 2007 at 11:04 AM

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!!

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WesMan

Posted By: wiretapper
Date Posted: January 30, 2007 at 12:16 AM

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. posted_image

Posted By: Big Dog
Date Posted: January 30, 2007 at 1:33 PM

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

posted_image

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

Posted By: KarTuneMan
Date Posted: January 30, 2007 at 4:16 PM

Big Dog......thats cool......really cool. Where did you get the diagram?

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Posted By: Big Dog
Date Posted: January 31, 2007 at 7:49 AM

I have Mitchell 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.

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