robertdon777

Hope someone can help with this!

The car feel flat and doesn't seem to come onto boost, yet othertimes the turbo seems to come in ok. Boost gauge in dash seems to show boost working ok but there are no psi markings etc on this.

The car went into Saab to be checked and the performance loss was put down to a slipping clutch ?

The car pulls at low speed in a high gear without any noticeable rise in revs compared to road speed increase so i'm not sure about the clutch slip findings- any views?

Surely if the clutch was slipping you would notice the rise in revs compared to speed, the problem feels more like a struggle to build revs quickly when the turbo should be coming on boost almost a flat feeling.

I could understand if the clutch was slipping as the increase in speed would be poor but the rev counter would zip round, the rev counter seems to take an age to get round with what seems no increase in pace when the turbo should be coming in.

Any one have any ideas?

Any Saab specialists or turbo specialist in or near Birmingham?

Rob

RS Grant

First off I'd check all boost pipes in the engine bay mate... Might be a split/cracked hose??

I would agree that, from your description, it doesnt sound like a clutch problem.


Cheers,
Grant

Andy M3

I would check all the pipe's first - that is the most likely problem.

Has it had a service recently ? Were there any faults when Saab plugged it in, or did they diagnose it from your description ?

robertdon777

Taken to dealer for service and this fault was reported to them, they came back with clutch slip? It just doesn't feel like clutch slip. The revs take an age to build like its producing little boost but the guage reads fine. Not sure if dealer checked anything else (not my car) but it seems strange to come back with clutch slip, surely revs rise quicker with this problem?

Rob

Castrol

Try here: http://www.saabscene.com/saabforum/ubbthreads.php

Cheers

J4CKO

iTrader: (1)

SMear soapy water on hoses like doing a puncture repair, that usually highlights where its coming from as its diffficult to hear a leak and air gets blow around under there,

skinters

Get a boost gauge on it and check all is well - You need to compare it to what the stock boost at peak (floot it in 4th and see what boost you are getting at about 3k rpm). It should peak at over 1bar on the standard Aero - If it's a lot less then there's a problem and you can eliminate the clutch slip issue (or otherwise).
Good luck!

Fairhurst111

Hi,

I seem to have the same issue with my viggen. What was the outcome?

robertdon777

Clutch Slip (intermitant), seems the ECU goes into some kind of reduced performance mode when revs/road speed don't add up and flags a fault.

Seems strange but the car was taken first to a main dealer then a local garage and finally a Saab specialist in Birmingham and all three came back with the same problem.

The clutch will be done at the end of the month so i'll let you know if it cures the problem.

BTW Saab quote £650-800 for a replacement clutch!, the specialist £400

Rob

robertdon777

All sorted now, Clutch relaced and performance back to standard ie. lots of torque steer!.

Its also now had a stage 1 chip giving an extra 40+bhp, taking the engine to approx 270+bhp - how quick does this feel now, if anyone has drove one of these they will know its quite a handful as standard. It trys to drag you all over the road now, i'd forgot what that was like after having 4WD the last couple of years.

My old mans gonna have some fun in this in the wet!, thank god i've only got 215bhp and 4WD, scarey as hell that Viggen.

Rob

J4CKO

iTrader: (1)

My LPT does the drag all over the road thing, thats only got 150 bhp, 270 bhp must be evil and very very quick (once traction acheived over 80 mph that is).

When the wheel do spin on yours is it a horrible juddering, hopping over the road expereience or nice and smooth, vaguely aware of engine revs being quicker than road speeds, wheres all that smoke coming from ?

robertdon777

Erm, its just viscous - think back off before i end up in a bush, not smooth just lots of pulling and judder (soft top so expect it). Its my old mans car, i have a UK Turbo 2000 and it would walk away from this once up to speed. From a set of lights or a bumpy road though the Saab wouldn't see which way it went.

Rob

Mark in Ireland

I honestly think its down to what you are used to and if having driven a 4 wheel drive car which sticks to the road then getting into a fwd car with lots of power and torque it'll come as a surprise and gives rise to not generally true statements of being undriveable at high speeds on twisty roads.
My getme to work 9000 aero has over 300hp and masses of torque and can keep up with most things an any type of road. My older 9000 Carlsson has close to 400hp and 450lb.ft of torque and whilst it is a bit of a handful at times its all down to knowing what the car can actually do.
My aero had no problems sticking to the back end of a new M3 over 8 miles of twisty roads in the Lakes and the same car went round Anglesey faster than my mated new M3 and followed a trick looking scoobie at the same meeting for 2 laps and that was with a slipping clutch and no brakes.

Check out last post on this link.....note not one reply and its had over 400 veiwings after posting....

http://www.m5board.com/vbulletin/showthread.php?t=71592


http://www.richijenkin.co.uk/Trackda...06/Album24.htm

J4CKO

iTrader: (1)

No they are a bit crap in that department, then again we had a Volvo T5, a little better but not much. Powerful FWD cars are only any good once moving in the dry. I think there is a point when horsepower in a fwd just beomes academic, 300 to 400, just varies the ammount of smoke, damn good fun though.

robertdon777

They sound like beasts!. I'm sure most cars will keep up with others, its often down to driver commitment, i've be left standing through the twisties by a 1.1 fiesta!, purely because i value my life and car. I'm sure the Saab would probably lap quicker than my Subaru in the right hands but for everyday driving the Subaru is not as compromised, thus allowing power to be put down rather easier and with less driver skill.

The Viggen is a nice motor but the chassis leaves much to be desired in terms of handling balance and throttle adjustability, outright grip and cornering speed are ok so long as you are careful with power application, personally i've been bought up on hot hatches, so quite used to pretty powerful fwd but this takes the meaning of torque steer to another level - much prefer 4wd now.