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Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Gotta 2000 Civic Sedan and the tach doesn't work.It came with a B20 non v and was converted from auto to manual,if that helps.CEL light is on and cannot be read aswell FML.Has a Obd1 p75 and a stepdown, pretty sure a eBay one idk.Any advise is highly appreciated.
Cheers. https://cimg6.ibsrv.net/gimg/honda-t...e9fe0876b9.jpg |
Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
obd2b gets tach from the ecu, you sir will have to run your own tach from the dizzy.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
As in screwing down a huge tach on my dash 🥺
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by tony_2018
(Post 51915520)
obd2b gets tach from the ecu, you sir will have to run your own tach from the dizzy.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
No, you run a wire from the distributor to the wire to the back of the cluster that provides signal to your tach.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by tony_2018
(Post 51915520)
obd2b gets tach from the ecu, you sir will have to run your own tach from the dizzy.
Originally Posted by tony_2018
(Post 51915535)
No, you run a wire from the distributor to the wire to the back of the cluster that provides signal to your tach.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by tony_2018
(Post 51915535)
No, you run a wire from the distributor to the wire to the back of the cluster that provides signal to your tach.
If I'm correct I think it's a 8 pin clip or something like that.. |
Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
You will need to connect the ICM wire (yellow/green) either at the distributor or inside the car at the original ECU plugs to either the tach output wire at the ECU or the blue wire on the driver's side near the firewall that is taped to the chassis harness with a black rubber plug cover (this is the tach test connector). Now, IF you have an aftermarket distributor, it is likely that the igniter is too weak to power the tachometer and your wiring may be just fine. Get an OEM distributor and try again. Most ECU adapter harnesses have the ICM and tach output wire connected together already... so you can verify this just to make sure. It can be done there if it was accidentally omitted.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by JRCivic1
(Post 51915585)
You will need to connect the ICM wire (yellow/green) either at the distributor or inside the car at the original ECU plugs to either the tach output wire at the ECU or the blue wire on the driver's side near the firewall that is taped to the chassis harness with a black rubber plug cover (this is the tach test connector). Now, IF you have an aftermarket distributor, it is likely that the igniter is too weak to power the tachometer and your wiring may be just fine. Get an OEM distributor and try again. Most ECU adapter harnesses have the ICM and tach output wire connected together already... so you can verify this just to make sure. It can be done there if it was accidentally omitted.
Bout to give it a try. Brb in a few with an update. |
Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
An OBD1 ECU can't interact with an OBDII reader. OBD1 codes are checked by putting the test jumper in and counting the CEL blinks.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by JRCivic1
(Post 51915585)
You will need to connect the ICM wire (yellow/green) either at the distributor or inside the car at the original ECU plugs to either the tach output wire at the ECU or the blue wire on the driver's side near the firewall that is taped to the chassis harness with a black rubber plug cover (this is the tach test connector). Now, IF you have an aftermarket distributor, it is likely that the igniter is too weak to power the tachometer and your wiring may be just fine. Get an OEM distributor and try again. Most ECU adapter harnesses have the ICM and tach output wire connected together already... so you can verify this just to make sure. It can be done there if it was accidentally omitted.
https://cimg0.ibsrv.net/gimg/honda-t...c582d307a4.jpg |
Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by Pat_Ek1984
(Post 51915827)
Is this what I'm looking for??
https://cimg0.ibsrv.net/gimg/honda-t...c582d307a4.jpg Come to find out,inside my dizzy the actual Yellow wire with the green line had a nasty rip.I soldered it, and now rpm is working as it should be.Thank you all. Just so you know,if this issue so happen to you take a close look inside your distributor.Again thank you all. https://cimg9.ibsrv.net/gimg/honda-t...4239d08c57.jpg |
Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Yes, that blue wire would have been the correct location. Glad you found that damaged wire inside the dizzy... since your tach now works, this means that your adapter harness is wired correctly and making the signal full strength corrects the loss of tach signal. Congrats sir.
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Holy dirty oily engine!
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Re: Tach issue with my 2000 Civic Ex B20 swap,Please Help😂
Originally Posted by JRCivic1
(Post 51916370)
Yes, that blue wire would have been the correct location. Glad you found that damaged wire inside the dizzy... since your tach now works, this means that your adapter harness is wired correctly and making the signal full strength corrects the loss of tach signal. Congrats sir.
Now I just have the CEL that's haunting me,I have a post up about it as well.Thanks again. |
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