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Isuzu NPR Turbo underboost. Replaced turbo, checked turbo for proper function, waste gate, installed test boost sensor, checked EGR valve and air inlet, checked alternator....still loosing power. anyone else have a similar problem?

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  • Contributor
  • 19 Answers

Posible bad cylinder

Posted on Dec 02, 2012

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Posted on Jan 02, 2017

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czaa
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SOURCE: 1994 GMC VIN 2GTFK29S2RXXXXXXX Turbo boost problem

hav u checked the O2 sensors they could be a little old also alot it could be an air leak somewhere-hav it scanned or buy haynes manual

Posted on Aug 12, 2009

  • 1201 Answers

SOURCE: fault code p0245 puegoet 406 turbo fault

My book shows that P0245 is the super/turbo charger solenoid "A" voltage is low.

Posted on Sep 29, 2009

Testimonial: "cheers for that x18wheeler60 thought it was low pressure not voltage,dont suppose you no which selonoid might be causing this nightmare."

SOURCE: I am not getting turbo boost at all.

its not getting the full flow in order to open the waste gate.

Posted on Mar 01, 2010

  • 90 Answers

SOURCE: On my 2000 Golf 1.9

You will need a Vacuum hose diagram to hook thes up correctly. There should be a diagram on the hood or raiator cover of the vehicle. If the diagram is missing you will have to take ALL info from your car (Year,Make, Model, Engine size, Engine code) and obtain the diagram from a dealer.

Posted on Jul 28, 2011

emissionwiz
  • 76630 Answers

SOURCE: AGAIN! STILL NEED HELP ON THIS 2.7 SPRINTER,ALREADY REPLACED THE TURBO BECAUSE I WAS'NT GETTING ANY BOOST, NOW WITH THE NEW TURBO I STILL GOT NO POWER!THE WASTE GATE DOES'NT MOVE AND IF I APLL

If you diagnosed the turbo and spent all the money to replace it then it is time to consult the dealer on this problem.

Posted on Sep 18, 2012

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1 Answer

What is code , po299' on mitsubish shogun 2008


the following answer is courtsey of OBD-CODES.com OBD Codes Your OBD-II Trouble Codes Repair Site Home Trouble Codes FAQs Forums Store P0299 Turbo / Supercharger Underboost OBD-II Trouble Code Technical Description Turbocharger/Supercharger "A" Underboost Condition What does that mean? The P0299 DTC code refers to a condition where the PCM/ECM (powertrain/engine control module) has detected that the bank "A" or single turbocharger or supercharger is not providing a normal amount of boost. That could be due to a variety of reasons, which we detail below. On a normally operating turbocharged or supercharged engine the air going into the engine is pressurized and that's part of what makes so much power for an engine of it's size. If this code is set, you will likely notice reduced power output. In the case of Ford vehicles, this may apply: "The PCM checks for a minimum throttle intake pressure (TIP) PID reading during engine operation, which indicates an underboost condition. This DTC sets when the PCM detects that the actual throttle intake pressure is less than the desired throttle intake pressure by 4 psi or more for 5 seconds." Symptoms Symptoms of a P0299 DTC may include: MIL (Malfunction indicator lamp) illumination Reduced power output from engine, possibly in a limp mode Unusual sounds from the engine/turbo There would likely be no other symptoms. Potential Causes Potential causes of a P0299 turbo underboost code include: Intake (induction) air restriction or leak Failed or damaged turbocharger (sticking, binding, etc.) Faulty boost/charge pressure sensor Faulty wastegate bypass regulator valve (VW) Low fuel pressure condition (Isuzu) Sticking turbo nozzle control solenoid (Isuzu) Faulty injector control pressure (ICP) sensor (Ford) Low oil pressure (Ford) EGR system fault (Ford) Variable geometry turbocharger (VGT) actuator (Ford) VGT vanes sticking (Ford) Possible Solutions First off, you'll want to repair any other DTC codes if present prior to diagnosing this code. Start with a visual inspection. Inspect the intake air system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as required. If the air induction system tests OK, then you'll want to focus your diagnosis efforts on the charge pressure control, diverter valve (blowoff valve), sensors, regulators, etc. Really at this point you'll want to refer to a vehicle specific detailed repair manual for specific troubleshooting steps. There are some known issues on certain makes and engines so also check out our car repair forums here and search using your keywords. For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation

Read more at: http://www.obd-codes.com/p0299
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OBD II Trouble Codes Home

Aug 02, 2015 | Cars & Trucks

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

Turbo not working on peogeot 407 2l diesel hdi 16v 2007 sport car


Check egr valve system, check turbo boost solenoid, is it hot ? It should be war but not hot. Check turbo waste gate. Remove the black assy that hold the butterfly valves inside that the turbo air hoses connect onto to and make sure they work by sucking on the tubes to activate them, they are sring opened or closed and the engine vacuum system opens or closes them.

Dec 15, 2013 | 2007 Peugeot 407 2.0

1 Answer

Po299 turbo underboost problem


Check that the turbo's charge pipes aren't leaking anywhere. (The boost side, to the intercooler, to the manifold).

If they're not, check for exhaust leaks.

If that's not it, the turbo isn't functioning properly, or the wastegate (bypass valve) is stuck open.

Aug 10, 2010 | 2004 Dodge Sprinter

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

I have an external wastegate with a 7psi spring and a blow off valve on my 96 turbo gsr and it still goes up to over 20psi how do i stop the boost getting so high. also it is a brand new top of the line...


The waste gate valve is there to dump the "extra" boost air direct to the engine thus bipassing the turbo. Remove and clean the gate valve; In all likelyhood is is stuck open.

Dec 08, 2009 | 2002 Mitsubishi Lancer

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

1994 GMC VIN 2GTFK29S2RXXXXXXX Turbo boost problem


hav u checked the O2 sensors they could be a little old also alot it could be an air leak somewhere-hav it scanned or buy haynes manual

Aug 12, 2009 | 2000 GMC Sierra 3500

3 Answers

TURBO NOT BOOSTING


Hello, I am a Saab technician from upstate new york. It sounds to me that the turbo wastegate rod may be seized to the turbo control valve. The easiest way to try to fix this is to spray penetrating oil on the turbo valve/ wastegate rod and work it back and forth with a pry bar. Many times u can also heat this up with a torch and pray. If those two things don't work than the turbo valve itself is seized into the guide hole machined into the turbo. good luck.

Jul 23, 2009 | 1996 Saab 9000

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

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