help with tach issue

Home / the12volt's Install Bay / Car Security and Convenience / help with tach issue (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

taz23340

Member - Posts: 4

Joined: December 03, 2004

Location: Canada

Posted: December 03, 2004 at 10:47 AM / IP Logged

hi guys,

fist post here so hope i make sense in what i am asking.

i have installed many starters in my time but it's been a while now as i have been out of the business for 4 years so just wanted to refresh my memory on the tach wire.

in the past i used to have a tach sensing box, but i dont work at the shop that has it and only have my dmm, if i remember correctly we need approv 5v at idle to be able to get the car to start and run, also i see in the magazines more and more units have a tach sensor built that emulates teh tach

any help would be great thanks

Back to Top

hagmanti

Silver - Posts: 304

Joined: September 14, 2004

Location: United States

Posted: December 06, 2004 at 8:43 PM / IP Logged

It'd help if you mentioned the car you were installing in. :)

Regardless, you're looking for a wire that measures somewhere between .8ish VAC and 5ish VAC at idle and that, more importantly, varies in strength w/ engine speed. Try measuring across both neutral and 12V. (I know, it shouldn't matter, but I've often found it does.)

Frankly, you're better off checking a few wiring diagrams (and then verifying) than you are just randomly poking wires. I've found (i.e., been pointed to) tach in some awfully weird places. And I've had RS units learn tach correctly from signals that did not look like a tach signal on my DMM....

Me

Back to Top

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.

help with tach issue

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

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