S40 (New) General : Clutch replacement with Ford Mondeo part, high revs to MPH

[ash723]

Originally Posted by FunkyMelon

And they fitted a mondeo clutch on the wrong car? Oh dear.

They maintain its the right clutch for a volvo..

[StatusRed]

Originally Posted by ash723

They maintain its the right clutch for a volvo..

A Focus clutch I could understand but a Mondeo clutch on our platform doesn't sound right at all.

[ash723]

Originally Posted by StatusRed

A Focus clutch I could understand but a Mondeo clutch on our platform doesn't sound right at all.

Interestingly, they would not give me any paperwork for the 2nd clutch. But they did say that the supplier provided the wrong clutch and they had to send it back twice. They had my car for 2 days due to that "mix up". So it may actually be a focus clutch this time, we will never know

[padder1956]

The clutch has nothing to do with the engine revs. under normal conditions it just makes and breaks the drive in the drive train.
the parts used are compatible google the LUK part numbers, as for bedding that
does not apply to a clutch.

[ash723]

Originally Posted by padder1956

The clutch has nothing to do with the engine revs. under normal conditions it just makes and breaks the drive in the drive train.
the parts used are compatible google the LUK part numbers, as for bedding that
does not apply to a clutch.

But if it was having the same symptoms (60mph, to 3k revs in 5th gear is what I am experiencing), then it must be slipping no?

[canis]

No, not necessarily.

You'll know a slipping clutch, I shall describe it...

You're travelling at 60mph on a flat motorway, you want to accellerate for whatever reason (overtaking a lorry), you indicate and move over and press the accellerator to the floor still in 5th gear, and the revs rise but the car stays at approximately the same speed. It feels disconnected, you find you can rev the engine independently, you notice the RPM gauge can move around while the speed doesn't change. That is a slipping clutch.

If you cannot increase the revs except slowly whilst gaining speed, your clutch is not slipping.

[canis]

I'll go further: if your clutch was slipping, as you say at 60mph pulling 3000rpm, you could just as easily find yourself reaching 6000rpm with only minor gains in speed. Usually the car will eventually "catch up" with the clutch, and snap back into a 1:1 ratio, it'll feel connected again and the throttle will feel like it's controlling speed again, until you give it some welly and it breaks free once more and you feel it slipping again.

The way you're talking, it sounds as if your vehicle speed and engine speed are never unconnected.

Have you ever driven an automatic? Ever noticed how uphill the engine revs more and downhill it revs less even though your vehicle speed hasn't changed? That's a similar experience to a slipping clutch. In a manual car, the engine speed and vehicle speed are ALWAYS a fixed ratio. Or it's slipping.

Hope this helps your diagnosis.

[ash723]

Originally Posted by canis

I'll go further: if your clutch was slipping, as you say at 60mph pulling 3000rpm, you could just as easily find yourself reaching 6000rpm with only minor gains in speed. Usually the car will eventually "catch up" with the clutch, and snap back into a 1:1 ratio, it'll feel connected again and the throttle will feel like it's controlling speed again, until you give it some welly and it breaks free once more and you feel it slipping again.

The way you're talking, it sounds as if your vehicle speed and engine speed are never unconnected.

Have you ever driven an automatic? Ever noticed how uphill the engine revs more and downhill it revs less even though your vehicle speed hasn't changed? That's a similar experience to a slipping clutch. In a manual car, the engine speed and vehicle speed are ALWAYS a fixed ratio. Or it's slipping.

Hope this helps your diagnosis.

yeah thats very useful actually, thank you. It seems to be as you describe it.