Lambda sensor check.

[spacca]

I read on IPD,s website an how to for checking your 02 sensors by simply unplugging them and listening for a
change in engine tone.
Did it to both and noticed no difference at all.
Does that suggest there both buggered.

[V70 Graham]

Are there any codes showing ?

[spacca]

Are there any codes showing ?

Not got a code reader at the moment. Schoolboy error.
But it has returned a po402 in the past I think.
Funny thing is when I cleared that fault it's not come back in over a year.

[stribo]

That doesn't sound like the most scientific way of testing them.

[Harvey]

That doesn't sound like the most scientific way of testing them.

Here's the ipd link.

http://www.ipdusa.com/techtips/10003...sensor-testing

He did miss out the correct way bit.

[spacca]

That doesn't sound like the most scientific way of testing them.

Your right, it's not.
Just having a play really.
Got to change the cat anyway and those bolts are a bugger to undo.
Soaking in wd40 at the moment

[spacca]

Here's the ipd link.

http://www.ipdusa.com/techtips/10003...sensor-testing

He did miss out the correct way bit.

That's the one

[silverhorse]

Soaking in wd40 at the moment

Get yourself some PlusGas. That stuff will release anything.

[spacca]

Get yourself some PlusGas. That stuff will release anything.

Never heard of it.
Will give it a go if I can't shift them

[stribo]

Get yourself some PlusGas. That stuff will release anything.

Never heard of it.
Will give it a go if I can't shift them

Plus gas is the nuts.

[spacca]

Not got a code reader at the moment. Schoolboy error.
But it has returned a po402 in the past I think.
Funny thing is when I cleared that fault it's not come back in over a year.

Dongle came today.
It reads po422 not 402 as previously stated.
So is it the cat or the lambdas or both?

[M-R-P]

Probably cat or rear lambda but also worth checking the exhaust manifold bolts as they can work loose sometimes.

[spacca]

Probably cat or rear lambda but also worth checking the exhaust manifold bolts as they can work loose sometimes.

Thanks Martin.
Will have a play this weekend.
I'll try the lambda first to see if the code disappears.