Re: Volvo 940 Wentworth, Turbo Estate, 1993 - Cutting Out, Please Help
"REB" <firstname.lastname@example.org> wrote in message
>I have a 940, Wentworth, turbo estate (1993) that has an intermittent
> cutting out problem ....as it would appear lots of other people have,
> having had a read through your forum and others on Volvo issues.
> This has now become a real puzzle and no one has been able to solve it
> despite a year of trying! Can anyone here please help?
> Specifically, I can be driving along and the car just looses all power
> and cuts out. All lights come on the dashboard and sometimes
> diagnostic codes are being written but sometimes not. When they are
> written there are 2 - 121 which I gather is air mass metre and
> another which I'm told means 'knocks' sensor. It will restart
> immediately but the fact that it does this is becoming a real danger.
> It has now been behaving like this for nearly a year ..... and it all
> started with a warning light on the dashboard and a code that signified
> an emissions fault.
> Since this first happened, the following parts have been changed and
> work carried out:
> - new coil lead
> - new ignition AMP
> - new relay
> - new pick up lead
> - new CAT senor
> - throttle housing cleaned & adjusted
> - throttle valve cleaned
> - air flow metre connections cleaned
> - idle valve changed
> Whilst the dashboard warning light / emissions issue was resolved
> (never appeared again), the cutting out problem that then started is
> still happening and the above work has made no difference whatsoever.
> When it happens, the cutting out seems to take place when the car is
> slowing down e.g. when I approach a junction / roundabout and use the
> brake to slow down and / or clutch to drop down gears. But only
> I noticed that some people who have had this type of problem found it
> to be the hall sensor in the distributor. However, I have been told
> that the distributor on my car does not have one ... it is simply a
> flywheel pickup.
> I'm so tired of spending out on new parts only to find that my car
> still cuts out that I don't want to replace air mass metre and
> 'knocks' sensor only to find the same .... especially as the
> diagnostic codes for these only get recorded sometimes. I also gather
> that air mass metre will have to be an original (and so very costly)
> part because no one produces copy parts for it. Is that true?
> I am of course very concerned to discover that so many people seem to
> have had this cutting out problem with their Volvos .... and that the
> pattern for its occurrence is identical so as not to be just
> coincidence . Has anyone out their approached Volvo HQ direct to raise
> this as a design fault?
> Having been a Volvo driver for years I'm so fed up that I'm about
> to ditch my 940 and abandon Volvo's for ever.
I can sense the frustration in the note above. The AMM, which is the only
one defined by code in the posting, wasn't replaced, and yet the same (AMM)
code reappears after a stall. I understand that there are times when one
part makes another issue a code for a different system, but not always.
Replace the AMM. Get one from a junk / wrecker / breaker yard if you don't
want to buy a new one from the dealer.
Skirting around a few hundred dollars (or pounds) isn't worth the
frustration. Clear part of your calendar, give the kids something
time-consuming to do, buy get the replacement AMM, pick a nice shaded spot
to work in, bring all your tools and a radio with music you like, replace
the AMM, relax, and go for a nice drive. If you cured it, then you are done
(with that). If not, then you have had a nice time and it only cost you a
small pile of money. Most of the people on this forum have had both
Let us know how it works out.