General: - V70 Mystery electrical plug ?

jackthehat.co.uk · Jun 23rd, 2007, 21:31

Just got our 2003 V70 D5 SE yesterday. Delighted with it but today I noticed an electrical plug under the bonnet that isn't plugged into anything. There is a wide plug that is fitted into the airflow sensor (next to air filter box) but coming off the same cable is another 2 pin plug that looks like it should be attached to something. I had a good look and couldn't see anywhere for it to go. Any ideas? I know most cars have diagnostic plugs located around the engine bay but this one doesn't look like that. Is my car missing something? It also doesn't look like an aftermarket add-on. It looks like it's original to the car.

Paul Clifton · Jun 23rd, 2007, 21:53

About 4 inches from the air flow sensor plug the wiring loom should be fixed to a bracket on the front of the air box. Also clipped to this bracket should be a valve with two vac pipes this should have a black two pin plug. If that is the plug you are referring to. (just had a look on my own D5)
This valve is the control for the pnuematic front and rear engine montings.
If you are not sure p.m. me with your e-mail address and I will send you a photo.

Paul.

jackthehat.co.uk · Jun 23rd, 2007, 22:14

Quote:

Originally Posted by pc654

About 4 inches from the air flow sensor plug the wiring loom should be fixed to a bracket on the front of the air box. Also clipped to this bracket should be a valve with two vac pipes this should have a black two pin plug. If that is the plug you are referring to. (just had a look on my own D5)
This valve is the control for the pnuematic front and rear engine montings.
If you are not sure p.m. me with your e-mail address and I will send you a photo.

Paul.

Hmmm, now I am worried. Can't see a valve but i can see an empty bracket. I can also see a vac pipe going to the front engine mount but without a lot of investigation I can't see where it ends up although it disappears towards the top of the radiator. See my photos I have attached. One shows the mystery plug (circled in red) and the other shows the front engine mount.

jackthehat.co.uk · Jun 24th, 2007, 18:40

I had another look in the daylight this morning. The vac pipe from the front engine mount disappeared up behind the top of the radiator. I gave it a little tug and out came the little valve unit. I plugged it back in and secured it on the clamp and hey presto! All back as it should be! I think what probably happened was that the garage that serviced it the other day must have unplugged it when they checked the air filter and forgot to replace it. I also had to drain out 2 litres (yes, 2 LITRES!!!) of engine oil this morning because the same dozy garage had overfilled the engine... good job I checked the oil level! Cowboys or what!!!

Thanks for all your help pc 654!

Paul Clifton · Jun 24th, 2007, 20:58

Any time mate no worries.

Paul.

Jun 23rd, 2007, 21:31	#1
jackthehat.co.uk Member Last Online: Sep 3rd, 2019 11:10 Join Date: Jun 2007 Location: Cumbria	V70 Mystery electrical plug ? Just got our 2003 V70 D5 SE yesterday. Delighted with it but today I noticed an electrical plug under the bonnet that isn't plugged into anything. There is a wide plug that is fitted into the airflow sensor (next to air filter box) but coming off the same cable is another 2 pin plug that looks like it should be attached to something. I had a good look and couldn't see anywhere for it to go. Any ideas? I know most cars have diagnostic plugs located around the engine bay but this one doesn't look like that. Is my car missing something? It also doesn't look like an aftermarket add-on. It looks like it's original to the car.

Jun 23rd, 2007, 21:53	#2
Paul Clifton Paul Clifton Last Online: Jul 18th, 2023 15:50 Join Date: Dec 2001 Location: Wisbech View Photos By: Paul Clifton	plug About 4 inches from the air flow sensor plug the wiring loom should be fixed to a bracket on the front of the air box. Also clipped to this bracket should be a valve with two vac pipes this should have a black two pin plug. If that is the plug you are referring to. (just had a look on my own D5) This valve is the control for the pnuematic front and rear engine montings. If you are not sure p.m. me with your e-mail address and I will send you a photo. Paul. __________________ Paul Clifton. A man's knowledge can never outweigh his experience.

Jun 24th, 2007, 18:40	#4
jackthehat.co.uk Member Last Online: Sep 3rd, 2019 11:10 Join Date: Jun 2007 Location: Cumbria	Job Sorted!!! I had another look in the daylight this morning. The vac pipe from the front engine mount disappeared up behind the top of the radiator. I gave it a little tug and out came the little valve unit. I plugged it back in and secured it on the clamp and hey presto! All back as it should be! I think what probably happened was that the garage that serviced it the other day must have unplugged it when they checked the air filter and forgot to replace it. I also had to drain out 2 litres (yes, 2 LITRES!!!) of engine oil this morning because the same dozy garage had overfilled the engine... good job I checked the oil level! Cowboys or what!!! Thanks for all your help pc 654!

Jun 24th, 2007, 20:58	#5
Paul Clifton Paul Clifton Last Online: Jul 18th, 2023 15:50 Join Date: Dec 2001 Location: Wisbech View Photos By: Paul Clifton	Thanks Any time mate no worries. Paul. __________________ Paul Clifton. A man's knowledge can never outweigh his experience.

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