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Turbo(?) Problem S60

2000 Volvo S60 2.4T SE Geartronic with 72,000 miles.

My car is feeling a bit sluggish... It's not slow, but theres no kick in the back when you floor the throttle, like there used to be. It feels like the turbo is either not working, or working at reduced performance.
Other symptoms include:
... At high revs (over 4000 - especially noticeable in 2nd gear at around 50mph), if you have it in 2nd gear and you put your foot down it will just shudder for 2 or 3 seconds with no acceleration whatsoever before accelerating as normal. This happens 4 times out of 5. The weird thing is, if you are in auto mode so that it's in a higher gear at 50mph, and then floor it so that it kicks down to 2nd, it will just accelerate as normal without shuddering.
... There is sometimes a slight whistle as you accelerate (usually only in first gear but sometimes I hear it in second as well) from the engine, which sounds like the turbo spinning. It is not loud, and this may just be a normal feature of this engine.
... The "Emission System Service Required" message comes on the computer. If I reset it (by pulling out the ECU fuse) it will stay off for several days and then randomly come back.

I have tried injector cleaner, and have installed a new boost control solenoid. Neither of these made any difference.

Another hint is that the first time I noticed this was after the car spent 2 weeks in the South of France in hot temperatures, and it first appeared on the hottest day.

Ideas?








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Turbo(?) Problem S60

The turbo emmits a very high pitched whine which should be barely audible over the exhaust and intake noise. The noise you describe is more like a leak in the air hoses from the turbo to the throttle body. The heat in Provance is nothing compared to the USA, and we have the same plastic parts. Check all of the fitting points, especially near the firewall where a couple of vacuum hoses are attached to the turbo intake.
Ditto on the suggestion that you have the trouble codes read. It could pinpoint the problem area.

Klaus
--
(V♂LV♂s 1995 854T, 1998 V70R)








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Turbo(?) Problem S60

The shutter as well as the message coming up is a concern. Granted, if the weather is extremely hot, the heat soak will lessen the boost of your turbo. My suggestion is to have the actual codes read that come up for the emission system. I'm willing to bet you have one or more leaking vacuum hoses or even a turbo hose. Find out what the codes are and post them back here. In the states, you can get them read for free by AutoZone. Don't know what you have available on that side of the pond.
--
1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon. My cars have been running so well lately they've got me worried.







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