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Join Date: Sep 2011
Location: Narrowsburg, N.Y.
Posts: 24
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boost gage problem HELP

87 turbo stock VDO Tack Boost gage combo. needle all over place on pre ignition reads .8 after start goes to .5 drive car 30 minuets shut car off restart reads .15 with power at 3500 rpm .8 4100rpm 1.plus whats my problem ? is this gage electrical or vacuum. is there a sending unit any answers I know there you guys are smart THANKS in advance.
Old 04-05-2014, 05:11 AM
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Join Date: Mar 2013
Location: Nova Scotia, Canada
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It is electrical and most likely the sensor itself. The contact on the sensor could be dirty or loose also, if I recall that was the issue with mine when I first got the car. Just pull your clock out and put a real boost guage in

Last edited by ObrHaus; 04-05-2014 at 11:16 AM..
Old 04-05-2014, 11:13 AM
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It could be your boost sensor that is installed on the intermediate intake manifold or the connection to it. It's the red colored item on this ad.

930 parts #3 F/S
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Old 04-05-2014, 12:29 PM
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Thanks guys
Old 04-05-2014, 03:51 PM
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