catalytic converter

[krsan]

Hello every one i need your help urgently. my car failed it's mot on emission yesterday and i need to know if a 2001 xsara catalytic converter would fit onto 1998 xsara? thank you

[AndersDK]

Before you rage out for a costly cat replacement - you should check just about anything else first.
I'd say there is a very fair chance it's NOT the cat on a '98 car.

[krsan]

what sort of things i should look for be before CAT?

[oscarloco]

For starters, you should check the Oxygen sensor

[BX-Basis]

Check tha Lambda-sond first. With an analog voltmeter or oscilloscope you should see an voltage alternating between 0.2 and 0.8 volts between the signal cables of the lambda sond (usually pin 1 and 2 of the 4-pin connector) with the engine warm and running at about 2500 rpm. If the tension does not get over 0.6 volts, the lamda sond must be replaced.

[krsan]

i als noticed that the car does consum a lot fuel lately.

[BX-Basis]

So it's a 99% chance that the lambda sond is the cause. An old lambda sond does not emit more than 0.6 volts max. Normally a tension of 0.6 volts means that there was not enough fuel injected so there's more fuel injected -> higher fuel consumption -> failing emission control.

[Peter.N.]

Should have got a diesel!

[krsan]

let just say if its the cat that causing the problem, would a CAT off 2001 model fit onto 1998 model?

[krsan]

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Peter.N.</i>

Should have got a diesel!
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
too slow [:p]