Vauxhall Meriva diesel - fan noise

Honest John Back Room » Technical matters
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
View Threaded
Sat 23 Dec 2006 16:07
Vauxhall Meriva diesel - fan noise - gbn
Hi,

I have a Meriva 1.7 CDTi (diesel common rail).

When cold, often there is a "blowing" or fan noise from the engine bay, at the nearside front.
It's quite loud.

I put it down to the air intake at first, but I've worked out that is not it.
The odd thing is it persists after I switch the ignition off for a few seconds upto 2 minutes.

It isn't the radiator fans. It seems unrelated to engine speed, aircon setting etc

Probably normal, but I like to know these things...

Thanks in advance
Reply | Report as offensive | Link
Sat 23 Dec 2006 19:46
Vauxhall Meriva diesel - fan noise - Dynamic Dave
Had this been a petrol engine, I would have said the noise was the secondary Air Injection system that aids engine warm up, but I'm not sure if one is fitted to the diesel engines?
Reply | Report as offensive | Link
Sat 23 Dec 2006 20:09
Vauxhall Meriva diesel - fan noise - sine
I don't know if these cars are equiped with one but it Maybe a fuel burning Auxiliary Heater (either to directly heat the cabin or indirectly through the engine coolant). You might be able to smell it or see smoke from its exhaust if this is the case.
Reply | Report as offensive | Link
Sun 24 Dec 2006 07:57
Vauxhall Meriva diesel - fan noise - gbn
Thanks.

I can't find information on such a 2ndary device.
There is no Haynes manual yet, and I'm not taking a punt on ebay for a "workshop manual"

I'll check the exhaust - but I don't have the heating up that much and I feel no heat coming in.
Reply | Report as offensive | Link
Sun 24 Dec 2006 11:28
Vauxhall Meriva diesel - fan noise - sine
Sorry, i didn't explain the auxiliary heater very well. The heater exhaust will not be connected to the engine exhaust.

Rich 9-3 gives a good description of it here, although it is for the 9-3 but with both cars being GM yours may operate in a similar way.
www.honestjohn.co.uk/forum/post/index.htm?v=e&t=36...2

I'm not sure if a diesel would have the secondary air injection either.

Reply | Report as offensive | Link
Sun 24 Dec 2006 11:34
Vauxhall Meriva diesel - fan noise - gbn
Ah ha. Thanks.

I'll investigate further.

I'm not in the UK (Brit ex-pat), but where I am is colder.
Reply | Report as offensive | Link
Thu 5 May 2016 16:27
Vauxhall Meriva diesel - fan noise - anthonyant

I have a mariva b 61 reg 1.7cdti 35000 miles an a noise which getts louder with speed

Reply | Report as offensive | Link
Fri 11 Nov 2016 20:14
Vauxhall Meriva diesel - fan noise - Fiesta-Ranger

Check heater motor, maybe on it's way out.

Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide

Will you have to pay the low emissions charge?

Use our ULEZ checker to find out if your vehicle is subject to ULEZ charges. Simply enter your number plate into the Honest John ULEZ checker to see if you will have to pay to enter the London Ultra Low Emission Zone.

Check your vehicle