Kieran
05-05-2008, 11:53 PM
Should I have one, and where the hell is it?!:inquisiti
My GLSi is getting absolutely rubbish MPG - Not surprising since I still have a CEL on (Air Pressure sensor knackered). However, before I went and found a replacement I decided to get an EVOScan cable and check out what the ECU is seeing - just incase something else was not operating correctly.
The Knock values, Octane Flag and Lambda sensor readings are WAY out. I think that the knock is Rich knocking rather than lean - Which is lowering the octane flag so that timing is pulled back, mixture is richened further, etc....
The Lambda sensor reading is showing in EvoScan as 3.1volts - Constant.:inquisiti This in itself doesn't worry me as the battery is reported in evoscan as being at 15 volts when the ignition's off (it's not), but the signal isn't oscilating as an O2 sensor signal should.
Now, according to my service manuals, the O2 sensor is on the manifold, but I can't see a sensor or any wire leading to it?!:inquisiti
The only thing I can think of is that my Galant is a 1990 model and it isn't fitted with a catalytic converter - I am thinking that it might not be fitted with an o2 sensor?
Anyone (Philip, Marksanne?!)??? /help
My GLSi is getting absolutely rubbish MPG - Not surprising since I still have a CEL on (Air Pressure sensor knackered). However, before I went and found a replacement I decided to get an EVOScan cable and check out what the ECU is seeing - just incase something else was not operating correctly.
The Knock values, Octane Flag and Lambda sensor readings are WAY out. I think that the knock is Rich knocking rather than lean - Which is lowering the octane flag so that timing is pulled back, mixture is richened further, etc....
The Lambda sensor reading is showing in EvoScan as 3.1volts - Constant.:inquisiti This in itself doesn't worry me as the battery is reported in evoscan as being at 15 volts when the ignition's off (it's not), but the signal isn't oscilating as an O2 sensor signal should.
Now, according to my service manuals, the O2 sensor is on the manifold, but I can't see a sensor or any wire leading to it?!:inquisiti
The only thing I can think of is that my Galant is a 1990 model and it isn't fitted with a catalytic converter - I am thinking that it might not be fitted with an o2 sensor?
Anyone (Philip, Marksanne?!)??? /help