Tach wire for a 1994
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
Burning Brakes
Joined: Apr 2009
Posts: 1,228
Likes: 10
From: That one city...you know that one. Idaho
Next to the coil.
PS
The coil is under the hood.
PPS
It has a spark wire hooked up to it going to the distributor.
PPPS
The distributor is under the water pump.
PPPPS
I will stop now.
Edit
Drinking 4+ cans of PEPSI by 1PM is not the best idea.
PS
The coil is under the hood.
PPS
It has a spark wire hooked up to it going to the distributor.
PPPS
The distributor is under the water pump.
PPPPS
I will stop now.
Edit
Drinking 4+ cans of PEPSI by 1PM is not the best idea.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
You really confused me lol.
I need to open my hood to check this filter , but from a quick google search I couldn't find a tach filter for a '94 !! all I saw was for a '91 or earlier !!
And it seems the filter has in&out. Where is it coming from and where does it go ? and where should I make the connection if there was a tach filter for my '94.
I'm waiting kimmer to tell me why it didn't work properly
. and what year is his c4
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Le Mans Master
Joined: Jul 2009
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From: SF bay area C.A.
C4 of the Year Finalist
OK, It's a 92 and no matter what the setting on the light was it would go on around 3k. I had it connected to the white tach wire under the dash in the box. I was told to try connecting it to the tach filter so I did and it works perfectly.
Burning Brakes
Joined: Apr 2009
Posts: 1,228
Likes: 10
From: That one city...you know that one. Idaho
I was going to put off walking downstairs to try and find that tach filter, then I remembered my PEPSI is also downstairs.......going to find that PEPSI...errr....tach filter.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
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From: Saudi Arabia
Thanks
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 41
From: Baltimore, MD USA
94 Corvette Vin P (LT1) did not use a tach filter.
Here's the schematic.
Signal from the ICM White wire goes to the PCM Black connector
pin B5.
Tachometer Out signal from PCM Red connector is pin A13 a White wire.
The tach wire then goes to the Electronic Brake Traction Control
Module harness. The wire also goes to C100 which is the firewall bulk head
connector where the wires from the engine compartment go
into the interior. The White tach wire then goes to the Dash Cluster
Tach.
Here's the schematic.
Signal from the ICM White wire goes to the PCM Black connector
pin B5.
Tachometer Out signal from PCM Red connector is pin A13 a White wire.
The tach wire then goes to the Electronic Brake Traction Control
Module harness. The wire also goes to C100 which is the firewall bulk head
connector where the wires from the engine compartment go
into the interior. The White tach wire then goes to the Dash Cluster
Tach.
Burning Brakes
Joined: Apr 2009
Posts: 1,228
Likes: 10
From: That one city...you know that one. Idaho
Mitchell (OnDemand5) did no get that memo 
PDF of wiring
Mitchell also thinks that a 94 zr1 wiring is the same as a 94 lt1 wiring...some how I doubt that.
PDF of wiring
Mitchell also thinks that a 94 zr1 wiring is the same as a 94 lt1 wiring...some how I doubt that.
Last edited by aDigitalPhantom; Aug 14, 2013 at 05:35 PM.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
94 Corvette Vin P (LT1) did not use a tach filter.
Here's the schematic.
Signal from the ICM White wire goes to the PCM Black connector
pin B5.
Tachometer Out signal from PCM Red connector is pin A13 a White wire.
The tach wire then goes to the Electronic Brake Traction Control
Module harness. The wire also goes to C100 which is the firewall bulk head
connector where the wires from the engine compartment go
into the interior. The White tach wire then goes to the Dash Cluster
Tach.
Here's the schematic.
Signal from the ICM White wire goes to the PCM Black connector
pin B5.
Tachometer Out signal from PCM Red connector is pin A13 a White wire.
The tach wire then goes to the Electronic Brake Traction Control
Module harness. The wire also goes to C100 which is the firewall bulk head
connector where the wires from the engine compartment go
into the interior. The White tach wire then goes to the Dash Cluster
Tach.
Great info , thanks for sharing
Race Director
Joined: Jan 2002
Posts: 12,261
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From: O'Fallon Missouri