Diesel tachometer sensor signal - Ford Truck Enthusiasts Forums



Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Diesel tachometer sensor signal

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 12-04-2006, 04:15 PM
rickgthf rickgthf is offline
Junior User
Thread Starter
 
Join Date: May 2006
Posts: 69
rickgthf is starting off with a positive reputation.
Diesel tachometer sensor signal

This is a follow up on my question about a 6.9 Diesel tachometer setup. Does anyone know specifically what the signal coming from the diesel tach sensor is? Is it a analog voltage signal or some kind of high rate on/off signal?
The reason I ask is that I want to match this signal output to my gasoline engine tach if possible.
Any suggestions?
Reply With Quote
  #2  
Old 12-04-2006, 06:08 PM
PLC7.3 PLC7.3 is offline
Post Fiend
 
Join Date: Nov 2004
Location: Manitoba
Posts: 5,638
PLC7.3 is gaining momentum as a positive member of FTE.
They are Hall effect sensors..........

http://www.kemparts.com/TechTalk/tt10.asp
Reply With Quote
  #3  
Old 12-04-2006, 06:20 PM
CheaperJeeper's Avatar
CheaperJeeper CheaperJeeper is offline
Posting Guru
 
Join Date: Aug 2006
Location: Kent WA
Posts: 2,175
CheaperJeeper is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by PLC7.3
They are Hall effect sensors..........

http://www.kemparts.com/TechTalk/tt10.asp
You sure about that? I've gathered that you are a Ford tech or something, based on your other posts. But there is one thing in the link you posted that seems not to fit with the tach system on the IDI's. Your link says

"All Hall-Effect sensors use three wires to do the job. One wire carries the power voltage and a second wire supplies the sensor ground. Both are supplied by the ignition module or computer. The third wire is the "toggle". This wire is the sensor's output to the computer. The voltage rises, usually to power voltage, and falls to near zero with the movement of the shutter as explained earlier...."

Our tach sensors only have two wires, so I don't quite see how they can be a Hall effect sensor. Maybe you can give some more explanation that will clarify....
Reply With Quote
  #4  
Old 12-05-2006, 07:33 PM
Dave Sponaugle's Avatar
Dave Sponaugle Dave Sponaugle is offline
Post Fiend
 
Join Date: Nov 2003
Location: Nutter Fort, WV
Posts: 21,280
Dave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to beholdDave Sponaugle is a splendid one to behold
Cheaper,
The second wire could be deleted since ground is through the engine block.
Reply With Quote
  #5  
Old 12-05-2006, 08:29 PM
CheaperJeeper's Avatar
CheaperJeeper CheaperJeeper is offline
Posting Guru
 
Join Date: Aug 2006
Location: Kent WA
Posts: 2,175
CheaperJeeper is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by Dave Sponaugle
Cheaper,
The second wire could be deleted since ground is through the engine block.
AHHHH! I see! Now if I can just figure out how to convert the signal off the tach sender into something I can use.....
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2006 6.0 Tachometer a mind of its own adamss 1999 to 2016 Super Duty 3 10-05-2016 10:30 AM
Help wiring aftermarket Tach southtexasidi Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 3 09-29-2015 07:43 PM
Custom tach install? Twete77 1973 - 1979 F-100 & Larger F-Series Trucks 11 02-21-2012 12:35 AM
1997 f250 HD/460 tachometer Zebich Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 4 02-20-2005 10:20 PM
tachometer on 5.4L engine terragate Modular V8 (4.6L, 5.4L) 3 01-04-2002 04:41 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
4x4, 69, 87, 93, banks, deisel, diesel, f250, hall, idi, placement, sencor, sensor, tac, tach, tachometer

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 05:39 AM.