I think they do, and I don't know anything about that model. If you're
unsure, you're better off taking it in for repair (warranty?)
droo wrote:
>
> On Wed, 24 Mar 2004 18:05:27 -0700, Tom <booyang1@hotmail.com> wrote:
>
>>
>> Droo,
>>
>> The procedure is simple enough, but if you've never used a multimeter
>> before, I'd recommend you either have someone there to help you or
>> have a shop check it for you.
>>
>> Start your truck and let it warm up, and then run it above 1200rpm for
>> at least 2 minutes. Check the voltage between pin 41 on the PCM
>> connector and ground. The voltage should fluctuate between 400 and
>> 600 milivolts (0.4 - 0.6 volts). If the voltage is not in that range,
>> or if the voltage stabilizes at either end, then the sensor is
>> probably going bad.
>>
>> To check if the sensor is shorted to ground, do a resistance check
>> between pin 41 and ground. If the resistance is low (a few ohms or
>> less) , then the sensor is probably shorted. If the resistance is
>> infinite (OL - "open line", or very large), then the sensor isn't
>> grounded.
>>
>> It should take about 10 minutes to change out the sensor if it's bad.
>> On the Gen 1 Daks, it's in the exhaust pipe right at the Y-pipe where
>> the exhaust manifolds join together; you can see it looking down the
>> right (passenger's) side of the engine with the hood open.
>>
>> You don't have to remove the sensor to check it. Hope this helps.
>>
>
> Very helpful. I have an 03 4.7...don't they have two o2 sensors?
>
This archive was generated by hypermail 2b29 : Sat Feb 16 2008 - 21:39:22 EST