Aftermarket Tachometer in a Sunbird

Home / the12volt's Install Bay / General Discussion / Aftermarket Tachometer in a Sunbird (

Topic Closed)

Welcome Guest :)

Members

< Prev Topic Next Topic >

Powers

Member - Posts: 5

Joined: April 18, 2004

Location: Canada

Posted: April 18, 2004 at 11:23 PM / IP Logged

I just bought a new Power Fist Tach from Princess Auto (It was cheap and my friend has one that works very well) except when I get it all wired up, my car supposedly only idles at 500rpm and when I have the car reved right up the highest it will go is about 2500rpm. I'm pretty sure this isn't right. Does anyone know if I may have done something wrong, or what could be wrong with it that it's not reading right??

rallysport

Copper - Posts: 172

Joined: April 10, 2004

Location: United States

Posted: April 19, 2004 at 12:46 AM / IP Logged

is your sunbird a v6? if so maybe you have it set to 4 cylinder mode which would read only 2/3 of your acctual idle so hence 500 instead of 700-800 Aftermarket Tachometer in a Sunbird -- posted image.

Aftermarket Tachometer in a Sunbird -- posted image.

Powers

Member - Posts: 5

Joined: April 18, 2004

Location: Canada

Posted: April 19, 2004 at 8:04 AM / IP Logged

No, it's the 4 cyl and it's set on 4 cyl...

rallysport

Copper - Posts: 172

Joined: April 10, 2004

Location: United States

Posted: April 19, 2004 at 11:41 AM / IP Logged

i think i had that backwards i meant 4 cyl set to 6 cyl mode, anyway there should be 2 white wires coming out of the ecm, one is "second gear in" and the other is the tach singnal, try swapping to the other white wire.

Powers

Member - Posts: 5

Joined: April 18, 2004

Location: Canada

Posted: April 19, 2004 at 2:28 PM / IP Logged

OK, because I had mine attached to one of the white wires coming out of the ignition module, the same one I have my alarm attached to. Then I switch to the black one, and it's doing the same thing. On my ignition module there are 2 white wires, a black wire and a red and black wire.

I changed it through 4 6 and 8 cylinders, that didn't make a difference.

rallysport

Copper - Posts: 172

Joined: April 10, 2004

Location: United States

Posted: April 19, 2004 at 11:29 PM / IP Logged

so you switched from a white wire to a black one? try the other white one if you havent allready

Powers

Member - Posts: 5

Joined: April 18, 2004

Location: Canada

Posted: April 20, 2004 at 11:29 AM / IP Logged

OK, I looked again. There are 2 black wires, 1 white wire, and a red w/ black stripe coming from the ignition module. The white only reads half the actual RPM. I'm sure it has to be a white wire. Someone said that there are two white wires by the ECU. I tried a bunch of wires, but only 1 worked, but still had the half RPM problem.

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Aftermarket Tachometer in a Sunbird

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.