2006 GTI had problems from first week i bought it! oil consumption tremandes! second turbo instald,from dealer throtle body flap changed camshaft chain,tensioners changed,they had to remove the oil pan to take out the metal shavings!! Still it dont run right. it is not all the time, i can here wenn the diafram knocks shot the waste gate+ trotle comes down verry slow wen i aselerate and let of! bin at 4 diffrent dealers,still no solution make 20 miles per Gallon in town 24 HWY. all time aded its more than 1 month at dealers!!!!!!! GTI is all i ever had and drove but this one is a hadach!!! has only 33k
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16619 -Engine boost condition - Limit not reached. Check intake hoses/ connections for leaks. Check Turbo charger waste gate regulating valve/ waste gate working correctly. Must move freely when accelerating, won't achieve full boost if waste gate sticking open. Check Turbo impeller turning freely, oil feed pipe for turbo can get blocked causing impeller to seize. Engine compact, not easy to access these components.
I am not a mechanic but i have got the same model saab which i have had for 5 years. Same issue a couple of years ago, for me it turned out to be a hole in the hose to the intercooler. Loss of power and smoking. Once repaired all ok though
It could be the waste gate that controls the turbo boost. Check your lower inter-cooler tubing from the inter-cooler to the turbo just to double check and make sure it's all buttoned up. If it's the bearing, there would be lots of blue smoke from the tail pipe. Good luck and keep me posted.
turbo is malfunctioning the turbo waste gate is not working take it to a shop right away, preferablly tow it so as not to damage the engine, if the exhaust gas's gets near the turbine bearings you will burn up the engine and the turbo cna explode like a hand granade and destrou your enging.
go to alldata.diy.com pay $20.00 to get detailed info on the trubo, most likey the hose is wore out the rubber hose and will have to be replaced the waste gate keeps from over boosting the engine so if the hose is worn the clamps won't hold it any more. remove the hoses on the turbo wiggle the turbo shaft back and forth and end to end there should be no play in the shaft if there is you need a turbo kit and can buy one to rebuild it, look up bell turbos in oregon on the net and get his number he can tell you the cost of the kit and how to rebuild. If you have excessive oil on the rubber hose then you have a blown oil seal and it will need to be replaced. you are lucky at this pont and the kit will come with what you need to fix the waste gate as well, but dought the gate is the problem.
you need to check the pipes that connect the turbo to the exhaust manifoilds these are common to leek at the gasket if there is to large of a leak turbo wont work properly the waste gate on these motors is actuated with oil pressure if the turbo pedistal mounting seals are bad turbo wont work right ethier waste gate isn't adjustable