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Turbo Trouble (MOAR BOOST but not on purpose) 700

posted by  Big Harry on  Sun Dec 21 14:26 CST 2008
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last visit: Sun Sep 21 11:06 CST 2014
[RELATED]

Hey Will,

Your car is supposed to have a high boost cutoff that, if operating, will kill the fuel pumps if the pressure goes too high. There is a small switch, usually, in front of the coolant tank with two yellow or yellow and black wires in it. They are the ground for the fuel pumps. You need to buy a good boost guage also. The Volvo gauge is a piece of crap for knowing what the boost is doing. I believe the factory setting is 6psi, and I have run beyond 9psi without killing the motor. If the waste gate is locked shut (carbon buildup in one of the lines probably) the boost could go past 15-20psi on full throttle. It should run like a booger though for a short while.:)

REgards,
--
Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com, www.dallasprecision.com 86 245 DL 222K miles, 93 940 260K miles, 88 765 GLE 152K miles, 88 780 246K miles, 93 Buick LaSabre 119,000 miles






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