capacitor on tach wire

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amazingaudio

Member - Posts: 22

Joined: November 03, 2005

Location: United States

Posted: January 13, 2006 at 11:07 AM / IP Logged

Has anyone heard of putting a 250 micro farad capacitor inline for a tach wire. We have had trouble learning the tach on a 99 Grand Prix. We are using a scosche (compustar) unit and technical support said to do this. Has anyone else ever heard of doing this.

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ryguy

Member - Posts: 44

Joined: November 28, 2005

Location: United States

Posted: January 13, 2006 at 11:30 AM / IP Logged

never heard of this been in the bis. 10 years . does it work ?

MECP installer,technician

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Powermyster

Silver - Posts: 962

Joined: April 06, 2005

Location: Ireland

Posted: January 13, 2006 at 12:20 PM / IP Logged

new to me also

Why oh Why didn't i take the blue pill

Darren Power

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amazingaudio

Member - Posts: 22

Joined: November 03, 2005

Location: United States

Posted: January 13, 2006 at 12:31 PM / IP Logged

haven't tried it yet still trying to check if someone else has done it first

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JWorm

Platinum - Posts: 2,208

Joined: December 11, 2002

Location: New Hampshire, United States

Posted: January 13, 2006 at 1:05 PM / IP Logged

I was told to do that a few years ago by a tech support person. Don't think it ever worked.

Are you using the white or PURPLE / white at the coil? If so, I would try using an injector wire.

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dualsport

Silver - Posts: 983

Joined: September 27, 2005

Location: United States

Posted: January 13, 2006 at 2:31 PM / IP Logged

I suppose it might be intended to act as a filter for noise or block out any dc offset or something-

As long as it's connected in series and not in parallel, it couldn't hurt to try.

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Powermyster

Silver - Posts: 962

Joined: April 06, 2005

Location: Ireland

Posted: January 14, 2006 at 1:44 PM / IP Logged

lol you try it and let us know

Why oh Why didn't i take the blue pill

Darren Power

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dualsport

Silver - Posts: 983

Joined: September 27, 2005

Location: United States

Posted: January 14, 2006 at 2:37 PM / IP Logged

Letcha know just as soon as I do- haw! capacitor on tach wire -- posted image.

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amazingaudio

Member - Posts: 22

Joined: November 03, 2005

Location: United States

Posted: January 14, 2006 at 5:12 PM / IP Logged

tried both wires mentioned and injector. Will let you know results after we try cap.

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snotdobbs

Copper - Posts: 148

Joined: September 11, 2003

Location: United States

Posted: January 14, 2006 at 10:55 PM / IP Logged

click click click click click click boom! Did it work? what happened.....

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