Tach Stopped Working :(
#1
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Joined: Sep 1999
Posts: 2,542
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 carbed with L-69 components
Transmission: 700R-4 w/2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Tach Stopped Working :(
It was working fine before I did an intake manifold swap. Yes, the tach wire is plugged into the distributor cap.
The needle stays at zero. I always used to point at about 1500 RPM with ignition Off, and then point to zero with ignition On, but now it's at zero either way.
I'd really like to know what changed after swapping the intake and re-installing the distributor...
The needle stays at zero. I always used to point at about 1500 RPM with ignition Off, and then point to zero with ignition On, but now it's at zero either way.
I'd really like to know what changed after swapping the intake and re-installing the distributor...
#2
Re: Tach Stopped Working :(
It was working fine before I did an intake manifold swap. Yes, the tach wire is plugged into the distributor cap.
The needle stays at zero. I always used to point at about 1500 RPM with ignition Off, and then point to zero with ignition On, but now it's at zero either way.
I'd really like to know what changed after swapping the intake and re-installing the distributor...
The needle stays at zero. I always used to point at about 1500 RPM with ignition Off, and then point to zero with ignition On, but now it's at zero either way.
I'd really like to know what changed after swapping the intake and re-installing the distributor...
Just curious if you found the cause of this?
#3
Thread Starter
Supreme Member
Joined: Sep 1999
Posts: 2,542
Likes: 675
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 carbed with L-69 components
Transmission: 700R-4 w/2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Tach Stopped Working :(
Not yet. will probably mess with it some more this weekend. I have another tach but have never verified if it works. I just hate to go to the trouble of swapping it out if that's not the problem. Was working fine before sitting over the winter. Finally got around to stabbing the dizzy back in and firing it up 2 weeks ago and tach stayed at zero...
#4
Thread Starter
Supreme Member
Joined: Sep 1999
Posts: 2,542
Likes: 675
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 carbed with L-69 components
Transmission: 700R-4 w/2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Tach Stopped Working :(
*UPDATE*
'Turns out that the tach filter on the firewall is bad. The tach works when bypassing the filter. That's good because even though I have another tach, I really don't feel like swapping it out.
So now the question is; since the tach works without the filter, do I really need a filter??...
'Turns out that the tach filter on the firewall is bad. The tach works when bypassing the filter. That's good because even though I have another tach, I really don't feel like swapping it out.
So now the question is; since the tach works without the filter, do I really need a filter??...
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OrangeBird (Today)
#5
Joined: Sep 2005
Posts: 26,545
Likes: 1,876
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Tach Stopped Working :(
Without the filter, there's a possibility of noise in the radio, and on other wires in the car. Otherwise, it's not a problem.
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OrangeBird (Today)
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