Hi,
This is my first post, greetings to all.
My car is a September 1995 E36 320i Touring.
I've recently replaced both Titania O2 sensors in the exhaust manifolds, both the old sensors looked identical (White/grey tip and black on the thread) when I removed them. To cut a long story short I wanted to check the operation of the new sensors, so with the aid of very thin wire I connected a DVM to the yellow wire and ground at the connector under the plastic cover. I did this with the temperature guage at the halfway point, started the engine and the dvm showed 0volts I revved the engine a bit and the voltage started to rise to around 0.3 volts. After about 5 minutes the dvm started twitching between 0.4 and 0.1 volts. (Closed loop operation I presume), I switched off the engine swapped the dvm connection to the othe sensor plug and re started the engine, again nothing much showed on the dvm until about 5 minutes had elapsed when it started twitching again. The question I ask is this behaviour normal and if so are MOT testers aware of this delay that will probably (definitely in my case) affect exhaust emissions? :confused
This is my first post, greetings to all.
My car is a September 1995 E36 320i Touring.
I've recently replaced both Titania O2 sensors in the exhaust manifolds, both the old sensors looked identical (White/grey tip and black on the thread) when I removed them. To cut a long story short I wanted to check the operation of the new sensors, so with the aid of very thin wire I connected a DVM to the yellow wire and ground at the connector under the plastic cover. I did this with the temperature guage at the halfway point, started the engine and the dvm showed 0volts I revved the engine a bit and the voltage started to rise to around 0.3 volts. After about 5 minutes the dvm started twitching between 0.4 and 0.1 volts. (Closed loop operation I presume), I switched off the engine swapped the dvm connection to the othe sensor plug and re started the engine, again nothing much showed on the dvm until about 5 minutes had elapsed when it started twitching again. The question I ask is this behaviour normal and if so are MOT testers aware of this delay that will probably (definitely in my case) affect exhaust emissions? :confused