Question about 2000 Pontiac Grand Prix GTP

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The amount of boost my engineis receiving is not showing on my gauge?

What should I do?

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I had the same issue. You have to attach the vacuum line to your MAP sensor which is just left of the brake manifold in the rear/right of the engine bay.

Posted on May 27, 2014

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Check that the engine is getting boost first and then check that the gauge line is connected to the correct port

Posted on Apr 23, 2014

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1 Answer

I have a 2000 gtp my boost gauge doesn't work it lights up but doesn't show any boost at all. I've replaced the solenoid and the boost actuator. Sometimes while I'm driving it'll reach full boost out of...


Sounds Like It,s Needing to Be Replaced Again it,s JUNK too Keep Me Informed On What YA Do or Not But Needs Somin done Soon You Might HAve More Problems If this Don,t Get Fixed thks Again

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Is it ok for my boost gauge to run a 3 to5 goin down the highway 05 impala ss


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Saturn sky no boost


Have the waste gate check by a shop to see if it is sticking open..

Check for broken or missing vanes on turbine.

Did you have the boost checked by a technician with a gauge or are you going by the boost gauge in the car (the car's gauge could be faluty) use the technicians gauge to verify.

Jun 19, 2014 | 2006 Saturn Vue

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92 twinturbo wont start, boost gauge showing full boost before starting, when normally its below half way, please help


Hi. You have to check the the hoses which bring the air pressure signal tomthe boost measurer device that is placed by the side of main colletor air tube. Put boost measurer 3000 gt on the google, images option, that you gone find the pictures showing this device. Holp to help you. Erik

Apr 05, 2013 | 1992 Mitsubishi 3000GT

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Fuse for Mitsubishi fuel pump


It is critically important for turbocharged models that the fuel pump receive the maximum amount of voltage available from the charging and wiring system. The alternator will try to maintain about 13.5 volts into the system. Resistive losses along the current path to the pump will reduce the voltage at the pump to something less than 13.5. If there are less than 12 volts at the pump, the amount of fuel flowing may be much less than expected and perhaps enough less to create lean air-fuel mixtures under heavy boost.

The instructions below show you how to bypass the resistor and relay that the turbocharged 3S models use to reduce voltage to the pump at idle. Please read through the instructions and look at the pictures before attempting this procedure. Before I did this relay/resistor bypass I measured the voltage at the pump using the method shown on my web page 2-fuelpumpvoltage.htm. At idle the pump was receiving about 6.7 to 7.0 volts. I saw from 10.6 to 10.8 volts as boost began to build and then watched that number drop to 10.2 to 10.3 volts as boost hit 15 psi or so and RPM approached redline. After performing the relay/resistor bypass I remeasured the voltage at the fuel pump with the following results.

Cold idle: 11 volts
Warm idle: ~10.6 volts
Warm idle after radiator fan kicked in: 10.35 - 10.55 volts
Acceleration and boost: ~10.5 volts

Feb 02, 2012 | 2000 Mitsubishi Galant

1 Answer

What feeds the boost gauge? On my 87 Supra Turbo, my boost gauge isn't working properly. Is it vacuum operated? Or are it's readings supplied by the MAF or MAP?


The boost gauge is fed by the Turbo. It tells you how much extra air the turbo is putting into your engine. This is turbo ONLY. Usually a little plastic line from the turbo to the gauge.

Mar 05, 2010 | Toyota Supra Cars & Trucks

1 Answer

Hi folks i have got passat 130pd tdi ,it seems


have you checked your air intake system? A clogged air filter will severly limit the amount of air that it can get, or a leak in the exhaust driving the turbo will limit the amount of pressure to spin it. Start by putting a new filter on it. Then if that makes no difference, you can check the waste system by installing a boost gauge, so as to check how much pressure you're actually getting to the manifold. If boost is normal, then you need to look for fuel system or mechanical factors.

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1 Answer

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exhaust leak,or blocked,squashed exhaust,may be turbo pipes leaking or loose,have to get the obvious looked at first,then get mechanic who knows to look at it,dont cut corners,gets expensive

Oct 13, 2009 | 2002 Subaru Impreza

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