XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Po171 and Restricted Performance NON stop for years...lol

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Old Apr 27, 2025 | 05:07 PM
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Default Po171 and Restricted Performance NON stop for years...lol

Finally smoked it and found the brake booster line under TB was POURING smoke. Fixed it and STILL would get the rest perf, smoked it again LONGER and saw the TPS POURING smoke out of the 2 holes under it. MUST be the tb shaft seals/bushings etc. When I partly open the blade the motor side is TIGHT and the other side where it is leaking has PLAY. I am just going to use right stuff and see if the code goes away then buy a new tb or can these be fixed? CHECK your car with SMOKE it will save HHOOUURRSS!!!! Man I have to detail underhood BAD been sitting a year because of this NON stop crap vacuum issues non stop.






 

Last edited by OnebadassXJR; Apr 27, 2025 at 05:30 PM. Reason: added info
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