Question about 1989 Pontiac Sunbird

1 Answer

Sunbird turbo kick out

I have a 89 sunbird GT turbo conv. i unplugged the vacuum line for the waste gate and now when i hit 4800-5200 rpm the motor shuts down and when the motor idles down a little it turns back on with the check engine light on. but it stays on for about 3 sec. then goes out. someone told me there is a safety thing that makes it do that.is there a way to bypass it. if there is please tell me how....

Posted by on

  • Anonymous Apr 22, 2009

    when

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 51 Answers

When the fuel system can"t provide any more fuel it will cut off (similar to electronic speed cut) to save itself from leaning out. Its not a good idea to take that hose off as it will boost itself to death, it has no way of controling how much boost is run and it'll be a matter of what goes first, the engine or the turbo.

Posted on Jan 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Thanks Terry. The car does not have full power.


Are you getting turbo boost pressure, waste gate may be open check waste gate actuator. Check that BOV is not stuck open you could clean with some throttle body cleaner. http://www.youtube.com/watch?v=govRsNtY8DM

Jun 14, 2015 | Cars & Trucks

1 Answer

Why dose my mazda 323 gtx over boost buzzer come on and boost cut


Sounds like the waste gate is having trouble. It could be what's called a "boost leak". the waste gate is most likely internal on a factory system. On the turbo, You'll see a small, vacuum pod looking thing with a linkage connected. Check to make sure the vacuum line/hose is properly connected and run that line to make sure it's not cracked some where.
Otherwise, it could be any coupler, connection on the pipes that carry the air from the turbo to the throttle body. Even a "loose clamp" can cause boost leaks. With over boost, it's most likely the waste gate.
Good luck. Hope ya find it.

Jul 05, 2014 | 1992 Mazda 323

1 Answer

2004 Saab 9-3 2.0 turbo


Waste gate valve may be. Stuck try dump valve to stop turbo lag

Jul 10, 2013 | 2004 Saab 9-3

1 Answer

I have 2008 Nissan patrol with zd30ti engine that has got a noise in the turbo at revs. If you pull the vacuum line off to the waste gate the noise stops.


When you remove the vacuum line you run higher boost pressure and spin the turbo harder. This will eventually cause damage to your engine and is not recomended.

Jun 18, 2013 | Cars & Trucks

1 Answer

Subaru impreza turbo intercooler drives like normal 2l but has no boost?


I would start looking at your boost control valve and vacuum lines going to your turbos waste gate, as well as the recirc/bypass valve. Usually when cars don't boost they have either stuck open waste gates or recirc valves. Or something is blocking the boost control valve from releasing the waste gate. Also make sure that all your intake hose clamps are tight so they are not releasing boost prematurely.

Jul 26, 2011 | Subaru Impreza Cars & Trucks

2 Answers

The Turbo Charger does not seem to engage .I was led to believe that after around 30 miles per hr. it would be like haveing a passing gear. Oh yes the car is a 1984 Nercedes SD 300 series Desiel.


The turbo charger has more to do with rpms than road speed.The turbo uses exhaust gas leaving the engine to push more fresh air into the engine thus creating higher compression and more horse power.You should feel some boost above 1500 rpms if everything is working properly.If not then you should have the system checked by a dealer or a good diesel shop.Good Luck!

Apr 02, 2011 | 1984 Mercedes-Benz Mercedes Benz 300 Class

2 Answers

I HAVE A 2007 DODGE SPRINTER WITH CODE PO299 WHAT TEST CAN I DO


Check all hoses to and from turbo to intake .. it is most likely a leak somewhere and the pcm is reading it as a underboost code.

Jul 28, 2010 | 2004 Dodge Sprinter

1 Answer

Engine has no power under 3000 rpm


have a look at the EGR valve if its stuck open you loos all the turbo boost till the EGR valve closes
it could also be the turbo gate valve (wast gate) sticking open so the turbo cant cut in till its screeming then the gate shuts and the old girl picks up her skirts and go's,,, you may get away with just blanking off the EGR valves to try them out but the turbo is a different mater,,,

Dec 06, 2009 | 1992 Toyota Pickup

1 Answer

It seems like the turbo does not kick in to full potential. Is there a way to open up the waste gate?


you need to check the pipes that connect the turbo to the exhaust manifoilds these are common to leek at the gasket if there is to large of a leak turbo wont work properly the waste gate on these motors is actuated with oil pressure if the turbo pedistal mounting seals are bad turbo wont work right ethier waste gate isn't adjustable

May 18, 2009 | 1997 Ford F350 Crew Cab

1 Answer

TURBO NOT BOOSTING


change air filter.check waste gate actuator make sure its open the waste gate.look at the actuator rod make sure its not stuck.there should be movement.

Apr 21, 2009 | 1999 Saab 9-5

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

329 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...