Auto. starts engine in "Drive" - Page 2

David Lawrence · 4th November 2017, 14:25

I have delved in to the plenum, lifted the ecu up and removed the top cover.

By peering down the side i can see that my ecu does bear the same VIN code as the car does, so it appears to be the original ecu.

However i can tell by the scratches on the cover and the fact that one clip is broken that this ecu has been opened up in the past, although never in my ownership.

Does this suggest to the T4 experts anything useful?

I would check the auto inhibit switch referred to in earlier posts except i have no idea where it is located. Any pointers would be appreciated.

marinabrian · 4th November 2017, 19:19

Quote:

Originally Posted by David Lawrence

I have delved in to the plenum, lifted the ecu up and removed the top cover.

By peering down the side i can see that my ecu does bear the same VIN code as the car does, so it appears to be the original ecu.

However i can tell by the scratches on the cover and the fact that one clip is broken that this ecu has been opened up in the past, although never in my ownership.

Does this suggest to the T4 experts anything useful?

I would check the auto inhibit switch referred to in earlier posts except i have no idea where it is located. Any pointers would be appreciated.

What is the part number on the cover NNN100720?

David Lawrence · 4th November 2017, 19:30

Quote:

Originally Posted by marinabrian

What is the part number on the cover NNN100720?

I didnt make a note of it. I will check it again in the morning.

The label i took the VIN number from was on the side of the metal inner part, it wasnt on the plastic cover.

You mean the number on top of the plastic outer cover?

marinabrian · 4th November 2017, 19:40

Quote:

Originally Posted by David Lawrence

I didnt make a note of it. I will check it again in the morning.

The label i took the VIN number from was on the side of the metal inner part, it wasnt on the plastic cover.

You mean the number on top of the plastic outer cover?

No, the part number label is on the metal housing of the ECM itself

David Lawrence · 4th November 2017, 19:47

Quote:

Originally Posted by marinabrian

No, the part number label is on the metal housing of the ECM itself

Ok, i will check it again in the morning.

David Lawrence · 5th November 2017, 09:47

Quote:

Originally Posted by David Lawrence

Ok, i will check it again in the morning.

It is indeed a NNN 100 720. My picture is not so clear as yours but it can just about be seen

marinabrian · 5th November 2017, 09:57

Quote:

Originally Posted by David Lawrence

It is indeed a NNN 100 720. My picture is not so clear as yours but it can just about be seen

Your ECM is fitted upside down

Brian

David Lawrence · 5th November 2017, 10:17

You mean it is upside down in the plastic box?

It didnt seem to want to come out of the box, and the 2 wiring grommits seem quite at home where they are.

Never having looked at one before i have nothing to compare with.

At least with it that way up, you can see the labels without unplugging it.

BigRuss · 5th November 2017, 11:10

Quote:

Originally Posted by David Lawrence

It is indeed a NNN 100 720. My picture is not so clear as yours but it can just about be seen

Didn't even think it was possible to put it in upside down, can honestly say I haven't seen that before.

Someone has definitely been messing around in there, my next question would be has someone put a replacement ECU core in your original case.

Russ

Phil-T4 · 5th November 2017, 11:20

Quote:

Originally Posted by shadysadie

Discovered today that my KV6 auto. can be started with "D" selected. Fortunately I had plenty of clearance in front of the car so no damage apart from a clean pair of trousers! Further (careful) investigation proved that the engine will also start with "Reverse" selected so can one of you knowledgeable people please point me in the right direction to cure this potentially dangerous fault?

David, Pop over to MK (you know the way) and i'll sort it for you

4th November 2017, 14:25	#11
David Lawrence This is my second home Rover 75 CDT-2001 Join Date: Jan 2009 Location: Wrexham, North Wales Posts: 3,606 Thanks: 195 Thanked 606 Times in 501 Posts	I have delved in to the plenum, lifted the ecu up and removed the top cover. By peering down the side i can see that my ecu does bear the same VIN code as the car does, so it appears to be the original ecu. However i can tell by the scratches on the cover and the fact that one clip is broken that this ecu has been opened up in the past, although never in my ownership. Does this suggest to the T4 experts anything useful? I would check the auto inhibit switch referred to in earlier posts except i have no idea where it is located. Any pointers would be appreciated. Last edited by David Lawrence; 4th November 2017 at 15:25..

5th November 2017, 10:17	#18
David Lawrence This is my second home Rover 75 CDT-2001 Join Date: Jan 2009 Location: Wrexham, North Wales Posts: 3,606 Thanks: 195 Thanked 606 Times in 501 Posts	You mean it is upside down in the plastic box? It didnt seem to want to come out of the box, and the 2 wiring grommits seem quite at home where they are. Never having looked at one before i have nothing to compare with. At least with it that way up, you can see the labels without unplugging it.