Gt4 St185 Loosing Power?

[OZZY_C]

Hi Guy, i have an ST185 and the engine idles fine at just under revs 1 but when i go to pul away the car does just not want to move? its like the car is loosing power somewere. it litarly goes up to 4500 revs before it will even move. i had and exedy clutch fitted last year so im pretty sure it cant be that.

any ideas?

[Fawbs]

hmmmm i'm not sure people have had trouble with exedy clutches with them wearing out after 6 months and stuff. Have you checked clutch fluid, slave cylinder and i think you can check the adjustment cable on the back of the clutch peddle. Also something worth checking is all your oil levels, if something like the gearbox has little or no oil in, it may beginning to sieze up a bit but usually you get that hot metal burning smell when it does.

Is it the transmission though? i mean the engine is revving normally and sounds ok?

[OZZY_C]

hmmmm i'm not sure people have had trouble with exedy clutches with them wearing out after 6 months and stuff. Have you checked clutch fluid, slave cylinder and i think you can check the adjustment cable on the back of the clutch peddle. Also something worth checking is all your oil levels, if something like the gearbox has little or no oil in, it may beginning to sieze up a bit but usually you get that hot metal burning smell when it does.

Is it the transmission though? i mean the engine is revving normally and sounds ok?

Hi Mate, cheers for your repley i had this problem with the car after about a month after the clutch was done and the car has just been parked on the drive so its only done like 1000 miles if that since the change. there is no burning smell when it does finally start pulling away and the engine sounds fine. the only thing i will say is that the turbo does not build up presure and the dump valve dont blow off when gear changes so could it be somthing to do with the turbo?

[Fawbs]

Did you run the clutch in ok? usually its like 1000miles+ you have to do before its bedded in. The turbo isn't building up pressure at all? Is this when you shift down to a lower gear?

[OZZY_C]

its does not built up pressure when you rev it up or even drop grear? plus i thing this problem was starting before i had the clutch chaged but after i got it change its stared to get worse. but surely if it was a problem with the turbo then i still have a 2ltr engine that should pull away ok. im talking about the car will bearly go faster than 30 miles an hours withouth really over reving it.

[Fawbs]

Ok that is something different than the clutch and the fact that it is worse after the clutch may just mean the clutch isn't fully bedded in yet which is no big deal. Ok have you got any pictures of your engine bay? I would check all your vacuum pipes, check for holes in your charge cooler as in another thread the guys charge cooler pipe had a hole in it. I'd take the intake off the turbo and see if its spooling up at all or for any blade damage on the compressor.

What you have to realise is that car is mapped to have the turbo pressure coming into the cylinders, without it your car will most likely run lean and with over revving it, you may melt a piston. I agree though 30mph is very slow but it could be in safe mode as i think the air flow meter would trigger when it detects no PSI going to the inlet manifold.

[OZZY_C]

if you have an email add then i can send you some pics over the weekend mate. but i remember checking all the pipes and they seemed to be ok but when i looked inside the turbo the fan thing inside it some of the blades were broke. could that be the cause of the problem? but the other thing is the just say the car is still and i put it into first gear and lift my foot off the clutch without giving any petrol then i can literally lift my foot of the clutch completely and the car wont even try to move? thats why at first i thought it was the clutch but like i said i have had that changed and i still have the same prob.

[Fawbs]

Is there any problems shifting into gears?

I would get that turbo replaced or refurbed and i would find out where those went!!! A blade may have gone through your compressor housing, into your charge cooler or even down the engine which is bad news.

[OZZY_C]

it goes into gear absolutly fine and even when you put it into reverse it dont make no dodgy noises. so you think i should try and change the turbo? or should i just put the car on eBay as spares or repaires?

[Fawbs]

Get some pictures first of the damaged blades on the turbo and put them up on here. The turbo is pretty straight forward to replace to be honest just may cost you a few hundred.

As for taking ur foot off the clutch and nothing happening, im at a loss. Where abouts do you live mate? Some people will know better than me on here so be patient for now. I'd say check the cv joints but being a 4wd car it would still run quite well if one broke or even two. Do you have any reistance in the clutch pedal?

[OZZY_C]

Hi Mate, the car is in walthamstow at the moment. i remember that a from when it used to run fine that when i droped down a gear i would get a glonking noise from the back but that was from the rear axle beam i think there is some play in that. could that be anything to do with it? the clutch pedal feels fine with good presure and stuff.

[Fawbs]

Check there is oil in the diff which i suppose could be the problem if its siezing up but it is most likely the diff mounting plate has gone. Start checking all these things, this will narrow things down.

[OZZY_C]

cheers mate i will look into this, the thing is i do not know to much about care so i dont really know what to look for, and the mechanic round here either dont want to touch it our they will tottaly rip me off. i really dont know what to do.

[OZZY_C]

Check there is oil in the diff which i suppose could be the problem if its siezing up but it is most likely the diff mounting plate has gone. Start checking all these things, this will narrow things down.

if it was the diff mounting plate would that have this afect on the car?

[Fawbs]

don't think so but if it is the mounting plate then it will need replacing.

[OZZY_C]

maybe i will just change the turbo and see how i get on?