Re: Have a look-see... - Saab 9000 Bulletin Board - Saabnet.com


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Re: Have a look-see...
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Posted by Street (more from Street) on Sat, 12 Oct 2019 19:53:32 Share Post by Email
In Reply to: Re: Boost Issue - Remanufactured Turbo?, Kyle B, Thu, 10 Oct 2019 08:02:06
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Did you check the turbo after your hard drive? If anything, if the wastegate disc is gone, hard acceleration will cause the turbo to glow red hot since the system is desperately trying to give you the boost you want. Anyway, disconnect the hose to the wastegate and the boost should skyrocket to max with any acceleration and fuel cutoff should occur. However, if you are hearing a "pshhhh" sound, then you probably have a leak somewhere. Check the underside throttle body hose and nipple which goes to the Idle Control Valve. These are known to leak. There is also an o-ring between the throttle body and intake manifold which can also leak. Intercoolers can also leak. Lastly, remove the three bolts on the downpipe and look to see if the wastegate disc has fallen off. If so, then replace turbo.

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