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The mkiv Supra Owners Club

Please Help! Loosing all boost!


Guest nbruch1939

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Guest nbruch1939

:help: This is the problem I have a 1994 TT Supra, When I floor it the first turbo spools up fine at the point where the Second turbo should kick in I loose all boost. Gauge reads 0 psi until I release throttle, I floor it again and it does the same thing :swear: . However, the strange thing is it doesn't do this all the time sometimes both turbos work fine.

 

I read somewhere to put my car into ttc mode. I did that and turbos worked fine, but then I couldn't fine the link that stated what possible problems this eliminates.

 

My car is a BPU running 17 PSI (when working right)

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check the pipe leading to the pressure tank, behind the injection side of the engine, 2 small pipes, they caused me a load of problems with mine leaking boost all over the place. if ur still standard seq then find Ian C and go to his website, loads of pic of whatand where the pipes are and lead.

 

good luck

 

Rob

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Guest nbruch1939

Ok I checked all hoses and tubes, also I checked the actuators to make sure they were opening at the correct PSI. Plus I checked the pressure tank, everything checked out. Were do I go from here?

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my car is doing that as well,but my boost only dropped to 0.3-0.4 bar when second turbo came in, could not find anything wrong with pipes so booked car into toyota, car has been in for 7 days now and still nothing, i'll let you no what the problem is when i find out.

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Guest nbruch1939

Please do let me know when you find out something, I've drove myself nuts tryiny to figure it out. "Obi-wan your my only hope"

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