Wiring grounds on LC-1
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 3,193
Likes: 1
From: Cincinnati Oh
Wiring grounds on LC-1
I plan on wiring all four of the grounds (system, analog, power ground and calibration wire) to the engine block via a large bolt near the O2 sensor position.
Is there any issue with all four grounds sharing the same bolt (voltage fluctuations)? My understanding is that you don't want to share the same +12 V wire with the O2 sensor and other devices as that can cause interference issues... but what about the grounds?
Is there any voltage drop or other "issues" with having the analog ground using a different bolt than the ECM ground - even though both are to the engine?
Should I ground the main 12v supply to a different part or chassis to avoid interference?
I wouldn't think it will be a problem, but I can't seem to find an answer for these questions either... TIA.
Is there any issue with all four grounds sharing the same bolt (voltage fluctuations)? My understanding is that you don't want to share the same +12 V wire with the O2 sensor and other devices as that can cause interference issues... but what about the grounds?
Is there any voltage drop or other "issues" with having the analog ground using a different bolt than the ECM ground - even though both are to the engine?
Should I ground the main 12v supply to a different part or chassis to avoid interference?
I wouldn't think it will be a problem, but I can't seem to find an answer for these questions either... TIA.
Burning Brakes
Joined: Aug 2000
Posts: 1,146
Likes: 2
From: Albuquerque NM
Originally Posted by Ramanstud
I plan on wiring all four of the grounds (system, analog, power ground and calibration wire) to the engine block via a large bolt near the O2 sensor position.
Is there any issue with all four grounds sharing the same bolt (voltage fluctuations)? My understanding is that you don't want to share the same +12 V wire with the O2 sensor and other devices as that can cause interference issues... but what about the grounds?
Is there any voltage drop or other "issues" with having the analog ground using a different bolt than the ECM ground - even though both are to the engine?
Should I ground the main 12v supply to a different part or chassis to avoid interference?
I wouldn't think it will be a problem, but I can't seem to find an answer for these questions either... TIA.
Is there any issue with all four grounds sharing the same bolt (voltage fluctuations)? My understanding is that you don't want to share the same +12 V wire with the O2 sensor and other devices as that can cause interference issues... but what about the grounds?
Is there any voltage drop or other "issues" with having the analog ground using a different bolt than the ECM ground - even though both are to the engine?
Should I ground the main 12v supply to a different part or chassis to avoid interference?
I wouldn't think it will be a problem, but I can't seem to find an answer for these questions either... TIA.
The iron engine block should provide a good "electron sink". Senors rarely pull the power or frequency to cause much fluctations to interfere with readings, but I would make sure to keep it away from the ignition, distributor, and starter grounds.
just an opinion
