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[Owen]

Had a little result on ebay today so I treat meself to £10 of that super unleaded fuel, the pricy stuff!
Really opened up the V6 in sports mode for about half hour, had great fun.
The only EML code showing is the 89lambda, as the breaks ceased to exist with hard driving, and the temp went just passed 100 the EML went out! Eased off, temp droped EML came back on! Opened here up again, temp just passed 100 and went no higher, EML went out again!
Again returned to normal driving, temp droped, and EML came back on.

IS this the hot exhaust gas making the lambda work right? Or is it just some strange fluke?

[Darth Loo-knee]

I aren't sure that even with driving hard the temperature should go to 100... as for the sensors not sure again but thought 02 sensors sent a message to the ECU about the gases going into the exhaust for the emmisions...

[JamesV6CDX]

I wonder if for some reason the ECU is getting wierd info from the CTS

[Owen]

CTS. Collent temp sensor right! I wondered that as i read a similar thing on an old post. So where exactly is the CTS and will have a look.

[Marks DTM Calib]

Lamda sensors are slower to respond when cold and hence include a heater, the ecu can detect a slow response and flags its as an error code in the form of a heater fault.

So, give it a thrash and you heat the sensor up and the response gets quicker.......light goes off.

Did you get the replacement sensor?

[TheBoy]

The coolant should not be getting near 100C!

[Owen]

Lamda sensors are slower to respond when cold and hence include a heater, the ecu can detect a slow response and flags its as an error code in the form of a heater fault.

So, give it a thrash and you heat the sensor up and the response gets quicker.......light goes off.

Did you get the replacement sensor?

No mate, didnt turn up, bloody royal mail

[Owen]

The coolant should not be getting near 100C!

It shouldnt? It has to be said that this was the first time I gave her a real hard thrashing, and wasnt surprised to see the temp go up.
Only thing that stoped me having fun is the brakes got a little hot and stoped working, kinda scarry

But in saying that I have noticed a few times normal driving that the temp will sometimes quickly rise to 100, then very quickly settle back to normal in the space of maybe 15-20 seconds seconds!

[TheBoy]

The coolant should not be getting near 100C!

It shouldnt? It has to be said that this was the first time I gave her a real hard thrashing, and wasnt surprised to see the temp go up.
Only thing that stoped me having fun is the brakes got a little hot and stoped working, kinda scarry

But in saying that I have noticed a few times normal driving that the temp will sometimes quickly rise to 100, then very quickly settle back to normal in the space of maybe 15-20 seconds seconds!

No, it shouldn't.

If I rag the MV6 to within an inch of its life, temp never goes above 96C, possibly 97 if I've ragged, then hit traffic jam.