Ground problem
New User
Joined: Nov 2019
Posts: 7
Likes: 0
From: Tahoe
Mine has the same issue, mine is a manual though so I just drive it. I was thinking I probably melted a fusible link when I accidentally hooked up 2 batteries(24V) trying to jump it before I had new batteries/battery cables. Smart I know. I've looked at a wiring diagram to look for the fusible links, but I only found 1 and it looked ok? Let me know what you find out!
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
tach gets Ground on connector A3 and that Black wire ends up behind Left Cowl panel.
BTW High Beam and Fasten Seat Belt warning Lamps get that same ground so IF those work then your issue is in the Cluster IF you ain't got Ground.
BTW High Beam and Fasten Seat Belt warning Lamps get that same ground so IF those work then your issue is in the Cluster IF you ain't got Ground.
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
Thanks, I’ll look into that. High beam and seat belt lamps work.
Thread Starter
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
Mine has the same issue, mine is a manual though so I just drive it. I was thinking I probably melted a fusible link when I accidentally hooked up 2 batteries(24V) trying to jump it before I had new batteries/battery cables. Smart I know. I've looked at a wiring diagram to look for the fusible links, but I only found 1 and it looked ok? Let me know what you find out!
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
IF you have Standard Tranny A9 goes to the Tach Sensor on the IP gear housing and the Ground wire for the sensor, it is still behind the Left Cowl Panel.
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
yes, quite possible I have other issues! Tach pulses when turn signal is on and other times just reads low. Just seems like a ground issue
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Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
BTW this is a work in Progress... I haven't started my truck since I cleaned the sensor so I haven't posted results yet.
but that FleaBay Amp board could be a Problem solver for weak signal...... https://www.ford-trucks.com/forums/1...r-erattic.html
I will follow it up when I have more Data.
My Last post gives what the resistance specs should be... but Heat destroys Magnetism so a sender that tests Good may in fact be putting out low voltage due to loss of magnetism on the center Pole Piece.... and of course fuzz on it acts like a Keeper on a Horse shoe magnet.
but that FleaBay Amp board could be a Problem solver for weak signal...... https://www.ford-trucks.com/forums/1...r-erattic.html
I will follow it up when I have more Data.
My Last post gives what the resistance specs should be... but Heat destroys Magnetism so a sender that tests Good may in fact be putting out low voltage due to loss of magnetism on the center Pole Piece.... and of course fuzz on it acts like a Keeper on a Horse shoe magnet.
Thread Starter
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
BTW this is a work in Progress... I haven't started my truck since I cleaned the sensor so I haven't posted results yet.
but that FleaBay Amp board could be a Problem solver for weak signal...... https://www.ford-trucks.com/forums/1...r-erattic.html
I will follow it up when I have more Data.
My Last post gives what the resistance specs should be... but Heat destroys Magnetism so a sender that tests Good may in fact be putting out low voltage due to loss of magnetism on the center Pole Piece.... and of course fuzz on it acts like a Keeper on a Horse shoe magnet.
but that FleaBay Amp board could be a Problem solver for weak signal...... https://www.ford-trucks.com/forums/1...r-erattic.html
I will follow it up when I have more Data.
My Last post gives what the resistance specs should be... but Heat destroys Magnetism so a sender that tests Good may in fact be putting out low voltage due to loss of magnetism on the center Pole Piece.... and of course fuzz on it acts like a Keeper on a Horse shoe magnet.
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
Thread Starter
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
Tech sensor wires are in pretty bad shape so I ordered a new sensor, hopefully that's it. Thanks for the help.
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
yeah a new sensor costs 25 to 30 bux ... pretty expensive.... when that might not be the issue....
Did you check it;s value... and clean it ?
what was the AC voltage that it was putting out at Idle ?
I know most folks just want to toss money at a problem without knowing the real cause.
Did you check it;s value... and clean it ?
what was the AC voltage that it was putting out at Idle ?
I know most folks just want to toss money at a problem without knowing the real cause.
Thread Starter
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Cross-Country
Joined: Aug 2012
Posts: 66
Likes: 0
From: Redstone, CO
yeah a new sensor costs 25 to 30 bux ... pretty expensive.... when that might not be the issue....
Did you check it;s value... and clean it ?
what was the AC voltage that it was putting out at Idle ?
I know most folks just want to toss money at a problem without knowing the real cause.
Did you check it;s value... and clean it ?
what was the AC voltage that it was putting out at Idle ?
I know most folks just want to toss money at a problem without knowing the real cause.