190E 2.5 16v - lambda sensor?

[pentoman]

Do 190E 16v's have a lambda sensor? Or is it only later catalyst models that have one?

I have a 1990 2.5, should this have a lambda sensor and/or catalyst? I have a slight idle/response problem and the removal of the lambda sensor would explain it. How do I know if it should have one?

Russell

 

[flagstaff]

you will know whether you have a lambdasensor if you lift the driver's side carpet and find a twin wire going into the transmission tunnel. alternatively, look at the dial/knob in the engine bay (on the n/s inner wing) that is used to alter ignition for different fuel types: if your car has a catalytic converter (and hence a lambda probe), the dial will have the word "KAT" on it

 

[pentoman]

Cheers - yes I have the wires but they stop under the driver footwell; they aren't connected to anything. I am trying to work out if they should connect to a lambda sensor or are usually just lying there connected to nothing.

Russell

 

[cossiedude]

Russ,

The cat fitment depends on the year and place of manufacture, unfortunately the 16V's suffer from idle problems as do a lot of older injection models.
My 2.5-16 has a idle problem that I am currently investigating, I've changed everything and it's still not working, I'll let you know when ive fixed it........
Greg

 

[pentoman]

For idle problems look at:

Coolant temperature sensor (4 pin at front of engine)
Fuel shutoff switch (on throttle linkage)
Throttle position sensor (Built into bottom of throttle body, 3 wires)
Idle Control Valve (Right side of engine as you look in, 2 pin plug, a clean sometimes helps but sometimes you've just gotta replace it)


Russell