Tach Filter Bypass
Thread Starter
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Tach Filter Bypass
My tach starting going crazy when I went above 3200 RPNM so I put a jumper around the tach filter and to my amazement the tach now works :party:
I cant believe it was that easy. I did not take the filter out completely and may and just may leave it the way it is.
I read many post some saying it worked, and some psosts saying it does not work.
For me today it works, I just drove the car on a 50 miles round trip and now I can shift with "some" confidence in he readings. Tomorrow I will match the tach witha couple of Diacom runs for accuarcy. :seeya
[Modified by ld85, 4:25 PM 8/30/2003]
I cant believe it was that easy. I did not take the filter out completely and may and just may leave it the way it is.
I read many post some saying it worked, and some psosts saying it does not work.
For me today it works, I just drove the car on a 50 miles round trip and now I can shift with "some" confidence in he readings. Tomorrow I will match the tach witha couple of Diacom runs for accuarcy. :seeya
[Modified by ld85, 4:25 PM 8/30/2003]
Drifting
Joined: Aug 2000
Posts: 1,521
Likes: 0
From: West Islip New York
Re: Tach Filter Bypass (ld85)
My tach did the same thing when I put an Accel coil in the car. Put a stock one back in and it acted normal so I left it alone.
I thought about jumpering out the filter at the time but was too damn chicken that I'd screw up the cluster. Good to know it works OK without it.
Where'd I put that Accel coil.......
I thought about jumpering out the filter at the time but was too damn chicken that I'd screw up the cluster. Good to know it works OK without it.
Where'd I put that Accel coil.......
Safety Car
Joined: Jan 2001
Posts: 4,386
Likes: 689
From: Boise ID
Re: Tach Filter Bypass (1MoorTym)
Mine does the same thing around 3200 rpm. If I remember correctly it also is an Accel coil (given to me some time ago). I was going to put the old coil back in to check if it indeed was the coil causing the problem. I may instead try this bypass feature. :)
Thread Starter
Race Director
Joined: Feb 1999
Posts: 12,772
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From: Indianapolis IN
Re: Tach Filter Bypass (87SAM)
I have the Accell Blaster Coil, I think thats what is is called, but it ran OK on the last Accell coil I had, so who knows what the real issue is, I'm just glad its OK.
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
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Re: Tach Filter Bypass (ld85)
My tach filter has been cut off completely, but that's a whole other story.
Thread Starter
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Re: Tach Filter Bypass (Mr Mojo)
Just took another cruise, the tach still doing its thing!
I am so pleased! :cheers:
Went to the local Dog N Sudes, must have been 250 cars there, yowsah!
I am so pleased! :cheers:
Went to the local Dog N Sudes, must have been 250 cars there, yowsah!
1st Gear
Joined: Aug 2003
Posts: 1
Likes: 0
From: Edinburg TX
Re: Tach and speedo problem
Speedo and tach on 88 are not working. Rest of cluster seems to be ok.
Other than problems with the cluster, are there any other elements that would affect the tach and speedo.
Other than problems with the cluster, are there any other elements that would affect the tach and speedo.
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Thread Starter
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Re: Tach Filter Bypass (flyersfan1088)
The ground wire from my tach filter is not hooked up. Where do I find it so I can hook it back up?
This wire goes up into a connector then into the FILTER, then out and into the distributor cover.
The ground in my distributor is the ceneter tab in the three connector plug and this tab is bent so that it goes under the coil so that the coil cover screw holds it down in place.
I do not know of a ground wire per-say, but I've been wrong before and often! :lol:
Melting Slicks
Joined: Jan 2003
Posts: 2,167
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From: What did the 5 fingers say to the face? SLAP!!
Re: Tach Filter Bypass (ld85)
My tach stopped working when I had my new torque converter put in. In Gordon Killebrews book for digital dash troubleshooting, he says that a 0 reading on the tach indicates a disconnected ground wire. He says this ground goes to one of the top bellhousing bolts. How in the heck do you get to this?
Thread Starter
Race Director
Joined: Feb 1999
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From: Indianapolis IN
Re: Tach Filter Bypass (flyersfan1088)
If that is where it is you can really only get to it easily buy takign your distributor cap off, then if you still cant get to it, mark your distributor with alingment marks and pull it.
