Help, anyone? - Page 4

Mike Noc · 4th July 2022, 20:27

Quote:

Originally Posted by NewDoc

Hi, It's an automatic. 2.0 diesel remapped by Russ.

Thanks. I was going to ask if your MIL comes on as a self test with key to position II or not, but seeing as Russ is going to sort the car for you there's no point.

NewDoc · 5th July 2022, 11:34

Quote:

Originally Posted by Arctic

Photo of said boost temp sensor, 2003 plate, some do have them.

1

I do have one of them. Not sure what it does though

BigRuss · 5th July 2022, 11:48

It's the 2nd IAT or inlet temperature sensor fitted to the later cars. The first is in the MAF sensor

It's used to more accurately determine the density of the air post intercooler.

Russ

Mike Noc · 5th July 2022, 13:42

Quote:

Originally Posted by NewDoc

I do have one of them. Not sure what it does though

Thanks means you have the later ECM - the MIL should also come on as a test with key to position II as well then.

The later ECM will bring the MIL on with a failed or unplugged MAF, and on automatic variants, if you get an open circuit on either the boost temperature sensor or EGR circuits.

As you say could well be a problem with fuel pressures. I've seen an EGR fail when the valve fell apart, which caused the engine to struggle to idle, smoke and fail to rev up, but never heard of it happening to anyone else, and of course the fault didn't come and go. Once the valve had failed that was it.

5th July 2022, 11:48	#33
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