Breathing/fueling/rad fan problem??? 2009 JCW - MINI Cooper Forum

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post #1 of 4 (permalink) Old Jan 3rd, 2014, 10:04 AM Thread Starter
JamesTeehan
 
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Breathing/fueling/rad fan problem??? 2009 JCW

Hi guys,

Can anybody shed any light on this problem??

I've got a late 2009 factory JCW and this problem started intermittently about 6 months ago but now seems to be permanent!

Symptoms are:

Jerky acceleration (hold throttle in steady position, yet feels as though you're opening and closing very quickly)
Induction noise has changed for the worse. Sounds louder than usual and just generally like it's poorly, doesn't seem to be the exhaust though.
The "pops" you get on the overrun have changed from the usual single pop to several pops
Power is down quite dramatically - feels strangled
Radiator fan often comes on, even after doing a very short journey, and stays on after turning the engine off. Impossible that it's had the chance to get warm, let alone too hot.

I actually had it serviced straight after the problem started and the garage said it was the plugs - which I had sorted.

Just had a look at the air filter to see if that was okay, and it seems fine. No sign of blockages or anything simple.

Any help would of course be appreciated, as I want to put the car up for sale this month (sadly :-( company car has now arrived and the mini is in the way :-( :-( :-( )

Cheers
James
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post #2 of 4 (permalink) Old Jan 3rd, 2014, 12:30 PM
MINI2 Master
 
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Hi ya

I would say you need to get it hooked up to a diagnostic computers and see what the codes are first
I have seen similar problem caused by something simply like a water temp switch and also bad fuel pump.

I think there is a tsb for the temp switch for internal corrosion
high pressure fuel pump are a known problem area.
But before rushing in I would get it connected up to a computer first save your self a lot of time and money.

Have you had all your latest recalls done on you fjcw

Hope this help
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post #3 of 4 (permalink) Old Jan 3rd, 2014, 11:18 PM Thread Starter
JamesTeehan
 
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Thanks for the reply buddy, I really appreciate it. I'll get it looked at ASAP.

These recalls you mention, sorry to sound like a total prat but could you elaborate? Is this something I should contact mini on?
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post #4 of 4 (permalink) Old Feb 7th, 2014, 10:10 PM Thread Starter
JamesTeehan
 
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Just so not to leave this unresolved. Finally got the car back today. Turned out to be a faulty thermostat. Stuck open.

For the sake of other users here's a list of symptoms.

- Power loss noticeable over 3000 rpm
- high fuel consumption
- climate control (heating) starting from cold straight away rather than waiting until warm
- change in the sound of the pops you get on overrun.
- radiator fan staying on after ignition switched off, even after short journeys

All of these symptoms were intermittent for about 10k miles or 6 months.

The job cost 190 + VAT plus 50 for diagnostics. That also included resetting service indicator which the garage who serviced the car last "couldn't do".

All sorted now. Running perfectly.

Hope this helps others.

James
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