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Member Since 10 Feb 2009
Offline Last Active Dec 31 2014 03:40 PM

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Smax - Turbo Overrun and Pump whine - are these normal for an Smax?

17 February 2009 - 12:02 AM

I recently bought an 18month old SMax 2.0 TDCI. It is great except of a couple of niggly noises that don’t have an obvious explanation. It has less than 14K miles on the clock.

1) Odd vibration noise when lift off the accelerator – when shifting up gears. Only noticeable when shift from 2nd to 3rd, 3rd and 4th and 4th to 5th. It is more noticeable when the engine is more stressed, for example, accelerating up a slope. The noise appears to be coming from behind my left shoulder, so it may be associated with the exhaust system. Local Ford dealer says most likely cause is Turbo overrun, and nothing to worry about. Is it? Any ideas?

2) Higher pitched whine – this is not immediately noticeable especially if playing the sound system loud. The noise is a little like the whistle from an out of tune AM radio station. This sound appears to be coming from the front centre of the car. My guess is it is coming from a pump. Local Ford dealer says its “normal”. I’ve not heard this noise in several other recent Ford 2.0 TDCI Mondeo’s, Galaxy’s or Smax’s. My concern is that this is an early warning of a potential failure of a critical item. Any ideas?

I’d appreciate any advice on the cause of these noises and whether to regard these are worrying.



SMAX TDCI - High pitch noise

10 February 2009 - 09:17 PM

I recently bought an SMAX 2.0 TDCI. 18 months old, with only 13K miles. Drives nice and has met my expectations except that it has a couple of odd noises.

The most irratating is a high pitched whine. You don't notice it at first especially with Sound system on and at speed. I first noticed this whine when I switched engine off. The whine continues for about half a second or so. Now having tuned my ear into it I can hear it all the time when driving the car - even with the sound system on.

It took it into Ford Deader who said it was normal - to be frank I took it for a couple of things, one of which was a loose luggage retaining bracket which they said they had fixed, but hadn't, so I don't have a lot of faith that they really knew what this noise was.

I think the noise is caused by the fuel pump. Although a little noise on overrun when switching engine off is acceptable, the elevel of noise with this one is not.

Any ideas?