2001 bi fuel 1.8 s40 i have 3 sensors on exhaust

[darrenain]

im having problems with lpg system on this car and been told it could be lambda / 02 sensor.

quick look at exhaust and iv got 3 sensors sticking out of it, 2 before the cat and 1 after.

which is which etc etc, please help.

[960kg]

Originally Posted by darrenain

im having problems with lpg system on this car and been told it could be lambda / 02 sensor.

quick look at exhaust and iv got 3 sensors sticking out of it, 2 before the cat and 1 after.

which is which etc etc, please help.

Here you are.....

[darrenain]

thanks for that, much appreciated, don't suppose you know which is a good replacement sensor to get for this, a look on ebay and you have a wide variety of makes and raging in price from £20 quid up to £120, bit confusing, any help would be good.

[darrenain]

Also while we are here the lpg system is switching to petrol after 4 or 5 minutes, if I turn off lpg and then back on again via the switch it will go back to petrol in a second or 2, if I switch the ignition off and restart it will run on lpg for 4 -5 minutes before going back to petrol, it is always the same amount of time, 4-5 minutes, never deviates.

I can confirm the tank solenoid and front one near the vaporizer are switching and working, iv changed the distributor with stepper motor etc as well and the vaporizer all of a car being broken, same fault same symptoms.

like i said been told its 02 sensor but i have no check engine light on? could this also be a failing temp sensor??

any help is a big bonus, worked hours on this and back to square one.

[darrenain]

960kg, is this pic definite for a 1.8, doing part number conversion to other manufacturers gives 2.5 bi-fuel, oe are all lpg lambda same part.

engine = b4184s9

[960kg]

Originally Posted by darrenain

960kg, is this pic definite for a 1.8, doing part number conversion to other manufacturers gives 2.5 bi-fuel, oe are all lpg lambda same part.

engine = b4184s9

It is definite 1.8 with 3 sensors in the cat.

The 2.5 engine looks as though it only has 2 sensors and the part number is far from identical.

Have another look!