Ang: Re: [Gmecm] Heated O2 Current Draw

[Jay Vessels]

Hi there!

When I added a AC AFS-74 3-wire heated O2 sensor to my truck, I think it 
came out to about 1 amp for heater current draw.  I am powering it on 
the same circuit as the ignition coil (with an additional external 
fuse).  It is okay to always power the sensor when the ignition is on, 
though there's certainly nothing wrong with  some interesting control 
system :)

Jay Vessels
1982 Chevrolet S-10 Sport, 2.8V6 TBI
1984 Chevrolet S-10 Blazer Sport, 2.8V6 (TBI pending)

Mike Frels wrote:
> When I added a heated O2 sensor to my '86 Camaro I used a relay to
> provide power to the heater element. The relay I activated by wiring
> it in with the engines A.I.R. system on the Port circuit. The only
> time the O2 sensor heater element receives power is when the engine
> is cold enough for the ECM to direct air to the engine exhaust
> manifolds.
> 
> Mike(another one)
> 
> -----Original Message-----
> 
>> From: Per Lonnborg <perlon at passagen.se> Sent: Mar 7, 2006 12:41 PM 
>> To: gmecm at diy-efi.org Subject: Ang: Re: [Gmecm] Heated O2 Current
>> Draw
>> 
>> I am also into converting to a heated O2 sensor, is the heater
>> circuit activated as soon as ignition is turned on, and then stays
>> on until engine/ignition is cut off?
>> 
>> /Per
>> 
>> 
>>> ----Ursprungligt meddelande---- Fr?n: dmumert at telusplanet.net 
>>> Datum: 2006-mar-07 17:31 Till: <gmecm at diy-efi.org> ?rende: Re:
>>> [Gmecm] Heated O2 Current Draw
>>> 
>>> Hi Mike
>>> 
>>> The Bosch LSM 11 requires 18 watts at 12-14 volts.  That is about
>>> 1.5 amps.
>>> 
>>> Dave
>>> 
>>> ----- Original Message ----- From: "Mike Poore"
>>> <mp at flowersbyvalerie.com> To: <gmecm at diy-efi.org> Sent: Tuesday,
>>> March 07, 2006 9:23 AM Subject: [Gmecm] Heated O2 Current Draw
>>> 
>>> 
>>> 
>>>> Does anyone know the current draw for the heater circuit on a
>>>> heated O2 sensor?
>>>> 
>>>> I need to convert to a heated sensor.
>>>>