I'm looking to cal 3 sets of TACHs. Is there somewhere i can freq clamp, or wirestab to get readings? I tried to freq clamp cyl#1#2#3#4 each one gave me eratic readings. I'd just like to find somewhere simple for a one time op. I know about the ECM #40 and the one on the back of the gauges. Is there somewhere else that can be probed in the engine compartment or with the dashboard removed?

 

I'm looking to cal 3 sets of TACHs. Is there somewhere i can freq clamp, or wirestab to get readings? I tried to freq clamp cyl#1#2#3#4 each one gave me eratic readings. I'd just like to find somewhere simple for a one time op. I know about the ECM #40 and the one on the back of the gauges. Is there somewhere else that can be probed in the engine compartment or with the dashboard removed?

 

1. Why? Is your stock tach broken?

2. Aftermarket tach's are R I C E.

3. Why are you doing 3 Tachs? Afraid you might have 2 of them break when running? LOL

4. Search. There's 2 very easy places to get it from.

a. Tach Sig screw on the back of the instrument panel.

b. Tach sig wire enroute to the ECU.

 

1. Why? Is your stock tach broken?

2. Aftermarket tach's are R I C E.

3. Why are you doing 3 Tachs? Afraid you might have 2 of them break when running? LOL

4. Search. There's 2 very easy places to get it from.

a. Tach Sig screw on the back of the instrument panel.

b. Tach sig wire enroute to the ECU.

 

Actually, I bought a seccond set of gauges to mod and then stick in my car. I received another set of gauges from patreezy for modding his, now all 3 have needles pulled off and I was hoping to make it quick and painless to cal them.

I did search, and i came up with that. I was hoping i could get it from an OBD pin or on coil somewhere so i could make it all really simple. I'll post if webtech turns up something.

 

Actually, I bought a seccond set of gauges to mod and then stick in my car. I received another set of gauges from patreezy for modding his, now all 3 have needles pulled off and I was hoping to make it quick and painless to cal them.

I did search, and i came up with that. I was hoping i could get it from an OBD pin or on coil somewhere so i could make it all really simple. I'll post if webtech turns up something.

 

its wire #5 on 101-2. but the pin readouts on the back of the cluster are wrong, or something like that. they are reversed. its been so long, but i did make a post about it a couple years ago in the reference section.

 

its wire #5 on 101-2. but the pin readouts on the back of the cluster are wrong, or something like that. they are reversed. its been so long, but i did make a post about it a couple years ago in the reference section.

 

If TCM is signal from tachymeter, then you can find it in OBD-II (D-Link) port under the dash. It's pin #1.

But check WebTech before. Electrical Trouble Shooting -> Engine Electrical System -> General -> Data Link Details

 

If TCM is signal from tachymeter, then you can find it in OBD-II (D-Link) port under the dash. It's pin #1.

But check WebTech before. Electrical Trouble Shooting -> Engine Electrical System -> General -> Data Link Details