Why does mums car keep cutting out?

[Thankyou4calling]

It's a Volvo V70 (estate) petrol. Well serviced, a good workhorse, but in the recent cold (and previously) it has a slight misfire when cruising and stalls when slowing at junctions even though it's an auto. Anyone got any ideas before she takes it into the dealer? Thanks.

[miniman]

Have a listen near any vacuum hoses for an air leak.

[Thankyou4calling]

Thanks, I will make that the first point of call.

[cptsideways]

It'll be the French made air bypass control valve on the throttle body

[Busamav]

Had similar with my V70 a year ago ,

good shot of injector cleaner and an "Italian service" and all will be fine

[M400 NBL]

Unlikely but worth mentioning because it happened to me recently. Rodents chewed some of the wires under the bonnet in my work car park. I'd just started working there and found out afterwards that there are dirty great rats in the undergrowth near where I WAS parking.

[PaulG40]

+1 for coil, that or hall sender?

MAF?

[useyourdellusion]

I'd lean towards the Coilpack too.

[Remagel2507]

Similar problem on a T5 recently but was much more serious - was the mass air flow sensor at fault, disconnect it and see how it runs

[guru_1071]

the previous owner of my V40 took it to three garages to try and have this exact same problem resolved.

in the end he gave up and part exchanged it for something else at the garage my brother worked at and i bought it cheap - i took the idle air valve off, cleaned it in thinners and refitted it.

its run perfect ever since and has never cut out or miss fired since.

took about five minutes to do!

[garycat]

Its a common problem on Ka's too, here is the remedy for them, perhaps the Volvo is similar.

http://www.kaklub.co.uk/pwpcontrol.php?pwpID=1898

[morgrp]

Remagel2507 said:

Similar problem on a T5 recently but was much more serious - was the mass air flow sensor at fault, disconnect it and see how it runs

be aware that may well bring on the Lambda Sond light