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Old 07 January 2004, 06:26 PM
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pantelis
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Took wifes 93 WRX for MOT and all is cool apart from a co of 8%!

Any pointers in the right direction much apreciated.

Thanks.
Old 07 January 2004, 06:28 PM
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greasemonkey
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What was the lambda reading?

Without knowing that, the likeliest candidates would be a knackered lambda sensor (most likely) or knackered cat(s).
Old 07 January 2004, 07:49 PM
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pantelis
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Ive got the test printout. Where would i find the lamda reading?
Old 07 January 2004, 07:52 PM
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pantelis
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I see the lamda reading now. it is 0.745
Old 07 January 2004, 08:26 PM
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dnb
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The lambda should be 1.00 for the MOT... Looks like it's new lambda sensor time.
Old 07 January 2004, 08:44 PM
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pantelis
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Thanks for the replys so far.....

I have had a little look and the sensor seems to be on a pipe that runs from one manifold to the other. On the one side of this pipe out of sight under some other stuff it sounds like it is blowing.

This I assume would give the lamda false readings and would richen up accordingly.

What do I need to order to sort this out - is there a gasket at the end or am I off track?
Old 07 January 2004, 09:04 PM
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dnb
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It would indeed give a false reading and cause the problem. Hopefully you just need a manifold gasket. Difficult to say without seeing, of course!
Old 07 January 2004, 09:25 PM
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pantelis
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OK. Thanks for the help. I will order a gasket tomorrow (or book it in somewhere.) Thanks again.




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