S70 T5 Boost Trouble.

[TangoDeltaSierra3]

This message is on behalf of a newbie - S70T5SYP - not my perfect running motor lol.

HI WAS WONDERING IF YOU COULD HELP ME I HAVE BOUGHT A 1998 S70 T5 EX PLOD CAR
AND THERES SEEMS TO BE VERY LITTLE BOOST ON IT I HAVE CHANGED THE LAMBDA SENSORS
THE AIR FLOW METER HAD IT PLUG IN AT VOLVO AND THEY REPLACED THE BOOST CONTROL
VALVE WHICH THEY SAID WAS FAULTY BUT STILL NOT MUCH BETTER ALSO IT IS GARBAGE ON
FUEL I.E 70 MILES TO 20 POUNDS WORTH OF PETROL JUST WONDERED IF YOU HAD ANY
IDEAS WHAT THE FAULT COULD BE I ALSO LIVE IN BARNSLEY IF YOU COULD CALL ME ON
07747885416 ASK FOR MARK AND I WILL RING YOU BACK SAVE YOUR PHONE BILL THANX
MARK

[siamblue]

Hi Get the car down to Dave Pengelly in Nottinham, Your cat might be dead too with that amount of fuel going through her,

GaRY

[TangoDeltaSierra3]

Mark if your looking i've added you to MSN Messenger, if you dont have it download MSN 7 its 2 min on broadband, if i were you i'd take it to Tony Sephton, Auto Electrician at Worsborough Dale if you know it, he has a gadget which can read your fault codes and maybee give you an idea of a fault, Volvo should have done that though, ask Tony to write the codes down if it shows any and report back.

[TangoDeltaSierra3]

i can't believe no one else has no clues as to the problem for a new member other than Siamblue ? Come on guys.

[Mrsmopp]

"Very little boost" could mean anything. Has he plugged a boost guage in to see what its actually producing? What other symptoms have we got? How does he/she know its got very little boost - where is the boost lacking, all the way through the revs or top end? Give us a little more info!!

Also have the obvious elbow joints etc been checked?

x

[swordy21]

Wastegate too slack, bleeding excess pressure too early? or Turbo Knackered.

[Justin]

Check all the turbo hoses for leaks, check all the vac hoses, read fault codes, etc etc etc, the list is endless, or take it to a specialist to look over :)

[TangoDeltaSierra3]

Check all the turbo hoses for leaks, check all the vac hoses, read fault codes, etc etc etc, the list is endless, or take it to a specialist to look over :)
I did suggest a trip to VT myself as he mentioned he was geting it Ricad.

[Garry B]

HI all. First post from downunder. 2 weeks ago picked up a really cheap but mostly sound 94 850 Turbo, which I'm thoroughly enjoying ( 60,000 miles, new cambelt, well specced, for approx 1800 pounds equivalent). Whilst looking for that, came across a 97 S70 2.0 T ( Singaporean - we have a few SG imports here in NZ) which I picked up for a song , about 2000 pounds equivalent) The manual suggests the 2.0 T should have same output as the 850, but it just doesn't. So much so that, I opened the bonnet to check there * was* a turbo bolted on under there.
So it's off to the Volvo agency for diagnosis. I'll post an update when we know what's happening.

['95R]

Check all the turbo hoses for leaks, check all the vac hoses, read fault codes, etc etc etc, the list is endless, or take it to a specialist to look over :)

I definately agree with Justin.

What does your friend hear while the turbo is spooling, any whooshing air sounds (obvious boost leaks), are the boost levels consistently low, or is it just sometimes, or what?

It's hard to diagnose the problem going off of a tiny bit of info.

[TangoDeltaSierra3]

I have no idea i.ve never met the guy lol, he lives in the same town and sent me the above e-mail which i copied to here, sorry it's as much as i know, his phone numbers there too lol if anyone wants to ring him. I said i'd take a look at it with him if he wanted but he hasn't rang me back so i guess he's happy or sorted it.