Question about 1992 Toyota Land Cruiser

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LC Prado 2LTurbo engine,turbo is not boosting.

Im experiencing problem with my turbo, i dont know if its the turbo or just some faulty sensors.my engine is running strong but i cant feel the power of the turbo.the turbo light from the panel is lid up every 2000rpm but no boost.hope you can send me advice.thanks.

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  • 329 Answers

Check the piping from the compressor outlet to the throttlebody for boost leaks. also check to make sure that the wastegate actuator is functioning properly. it may be stuck open. the other thing to check for would be an exhaust leak either between the head and the exhaust manifold or the exhaust manifold and the turbo.
if its none of those things, check the blades on the turbo (compessor and turbine sides) for damage and make sure that it turns freely

Posted on Oct 25, 2008

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1 Answer

Turbo boost sensor for V40


turbo boost sensor located on the wastegate actuator make sure turbo boost wastegate actuator getting engine vacuum.if waste gate getting vacuum more like boost sensor failed.

Apr 04, 2013 | Cars & Trucks

1 Answer

Turbo not kicking in like it should cant find no leaking pipe and turbo seems to be working fine


In general the possible causes could be:
- Boost pressure sensor harness is open or shorted
- Boost pressure sensor circuit poor electrical connection
- Faulty boost pressure sensor
- Faulty Turbo/Super Charger
- Engine over temperature.
- Ignition misfire exceeds the calibrated threshold.
- Faulty Knock sensor (KS)

I would doubt its the turbo as you said it seems to be working just fine (unless the wastegate is stuck open/wastegate seal is cracked). Also if the ignition misfire exceeds the claibrated threshold then I would think you'd hear that in the engine running normally. I would say locate the sensor and replace it?

Hope this helps

Dec 05, 2012 | Cars & Trucks

1 Answer

Smart car keeps cutting out whilst driving


If all power is lost in the car, it could indicate a bad battery connection, bad wiring, or loose main wire harness, etc.

If a warning light comes on - it may be going in to Safe Mode.

Safe mode is the set of parameters that the car will use if it believes there
is a fault with the engine that could cause irrepairable or long term damage.

Generally it is an excess in expected boost pressure entering the engine.
This excess boost from the turbo tends to happen for 4 reasons.

The boost pressure sensor (MAP sensor) is faulty.
The wastegate is seized shut or slightly open.
The wastegate actuator is faulty.
The air line to the wastegate actuator is damaged or off.

Obviously, if the sensor is faulty, it will tell the ECU lies about the boost pressure.
If the wastegate assembly fails in any way it will fail to open to bypass the turbo.
The turbo will continue to spin up, increasing the boost pressure, causing the fault.

Initially I would suggest disconnecting the battery for 5 minutes (make sure you know your
radio code before doing this), this will turn safe mode off and your car should run normally
again. Drive home with a bit of care, you may find the car might never do it again. If it does
go into safe mode again, you know you have a real problem and not just a glitch.

Best to contact your dealer and have it checked out.

Nov 03, 2011 | Smart fortwo Cars & Trucks

2 Answers

Hi my smart roadster has recently and suddenly developed a lack of power and the turbo boost guage moves ver little -does this mean it needs a new turbo?


This could also be Safe mode, the below text may help you.

What Is Safe Mode?

Safe mode is the set of parameters that the car will use if it believes there
is a fault with the engine that could cause irrepairable or long term damage.

How Can I Tell If It Is Safe Mode?

If your car suddenly lost power but before that you didn't notice any problems.
If there isn't vast plumes of smoke coming from the exhaust.
If the oil level is OK. If you had all 3 of those, it is almost certainly safe mode.

What Causes Safe Mode?

Generally it is an excess in expected boost pressure entering the engine.
This excess boost from the turbo tends to happen for 4 reasons.

The boost pressure sensor (MAP sensor) is faulty.
The wastegate is seized shut or slightly open.
The wastegate actuator is faulty.
The air line to the wastegate actuator is damaged or off.

Obviously, if the sensor is faulty, it will tell the ECU lies about the boost pressure.
If the wastegate assembly fails in any way it will fail to open to bypass the turbo.
The turbo will continue to spin up, increasing the boost pressure, causing the fault.

How Can I Fix It?

Initially I would suggest disconnecting the battery for 5 minutes (make sure you know your
radio code before doing this), this will turn safe mode off and your car should run normally
again. Drive home with a bit of care, you may find the car might never do it again. If it does
go into safe mode again, you know you have a real problem and not just a glitch.

Wait for the car to cool down and see if the wastegate arm moves freely.
Use the search function of the site for "wastegate service" to see how
you can possibly free up the wastegate assembly which could be seized.

Check the pipe work to and from everything to rule out leaks.

Try and borrow a MAP sensor to test.

As a last resort, book in with a smart specialist who will diagnose the problem

Dec 31, 2009 | 2008 Smart fortwo

1 Answer

99 dodge cummins. Have a code of P0237 turbo boost sensor low v.


The Volvo S80 did not come with a cummins engine

May 13, 2009 | 1999 Volvo S80

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Intermittent boost pressure


a bad pop off valve.  Or boost controller.  Sadly with 100K on the speedo things are far from mint.

Mar 25, 2009 | 2002 Volkswagen Passat

1 Answer

Lc prado overheat cause?


The turbo will not cause overheating.
Check the thermostat in the cooling system is working and then smell the coolant with the engine running. If you smell exhaust gases in the coolant it could be the head gasket.

Nov 21, 2008 | 1993 Toyota Land Cruiser

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