Thread: O2 sensors for 1995 P38 4L Petrol/LPG

I think phantom38 has been through the very same issue. I'm sure he'll see your post and offer his wisdom. Try PM'ing him.

Hi

It seems that 97 may have been the year O2 sensors were added, I just fitted new cat converters and added O2 sensors to my 96MY. It did not have O2 sensors to start with.

While it is true that the loom is there, apparently the ECU does not recognise them unless you upgrade to a later ECU or fit a tornado chip

Steve

Originally Posted by wine1951

Hi! I have a 1995 P38 4L Petrol/LPG , apparently this is the only year model to com to Australia without any oxygen sensors. The 1996 cam with 2 x O2 sensors before the catalic converter.
I have checked and there are connections on both sides of the gear box, but nothing on the exhaust.
I would like to find out if I install O2 sensors on the exhaust would the computer detect them?
I have connected an HHO generator to the motor but without the O2 sensor the Volo chip can’t communicate with the ECU properly.
Cheers

Hi mate I recently fitted O2 sensors to my 95 Gems.
1. Make sure the sensors you buy have the correct connectors as there are at least 2 types. ( I think Gems & Bosch plugs )
2. You will need to weld sensor mounts to exhaust system near existing connector plugs
3. You will need to obtain a later ( I think we used a 98 model ) ECU.
4. It will then need to activated via computer ( Rovacom or similar )
5. Then just verify by same computer that it has picked up the new values
and all is done.
Good luck.

Than you Fantom, I have looked all over the place for this info.
My hho dry cell will not give me the savings with out.
Cheers
John