Just taken a VVC 145 bhp year 2000 for it french MOT. It failed on emmissions, and the tester told us the lamba reading was to high.
Purchased a Bosch unit, but it had the wrong plug on it.
managed to fit it, although the hole was very tight, as this VVC has the sensor high on the exhaust manifold rather than in the downpipe.
Anyway went for a retest and the lamba is fine at idle, but he says it is as if it disappears as as soon as you rev it. no readings??
I have used him many times with MG's, and he almost always right about what the car needs to get past the emmissions.
However this time no ideas as to what could be causing the issue?
I should say that I lengthened the wires to make it easier to fit. Could this be a problem.
Any ideas people?
Thanks
Dave
vvc lamba sensor issue.
Moderator: Committee Members
Forum rules
Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
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frenchdave
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talkingcars
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Re: vvc lamba sensor issue.
Making the wires longer won't be a problem if the connections are sound.
When he loses lambda is that electricly or gas.
When he loses lambda is that electricly or gas.
Home to black Alfa 159 3.2 V6 Q4, blue MGZR160, green MGF VVC and grey MGF 1.8i, and red MG Maestro T16.
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ZSx
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Re: vvc lamba sensor issue.
Mines doing the same... so following this thread with interest, although i wonder if it is a faulty o2 sensor still?
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frenchdave
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Re: vvc lamba sensor issue.
I have a new cat here, but not sure it will help, but might be worth a fit