Question about 1995 Toyota Previa

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1995 toyota privia 2.4 supercharged 2 wheel drive.po171 code and did everything.i think it is in the turbo boost to fuel ratio

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It might be a loose intake hose.
Toyota Previa Check engine codes P0171 P0130 P0133

Posted on Nov 15, 2016


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Here you go.

P0171 TOYOTA - Air/Fuel Mixture System Lean Bank 1

Posted on Nov 15, 2016


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Turbo boost adjustment for mack 470h.p. engine, how do you make this adjustment?

there is none as the engine uses all the boost it can get
if you want more power then have the pump reset to 500 hp settings
boost pressures are a result of the fuel settings from the pump allowing more fuel in to burn which produces a hotter exhaust making the turbine wheel spin faster which creates the extra boost
a genuine mack 470 hp engine is a really torque engine if driven properly and if dyno tested will produce around 450 hp at the back wheels with a relative flat torque curve which means that the rpms hang on longer before having to change gears
however to keep the maximum torque available at rpms you have to drop a half ratio as soon as the rpms start to drop as the range change will be 250 rpms and that will keep the torque range well up
don't let it bog down as all that does is waste fuel and drive time

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2005 GMC Sierra Duramax 6.6 Changed air filter, oil and fuel. 20 mins of driving and lost all power. Code reads only P0299. Not sure what to check first

code p 0299 refers to turbo/supercharger ---low boost=== causes --- mechanical fault
check for all turbo hoses tight , inter cooler not split or has a hole in it

Dec 07, 2015 | GMC Cars & Trucks

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What is the problem if the code P0299

code po299 refers to turbo/supercharger -low boost===causes --mechanical fault
if turbo check for actuator unit working( broken hose to unit ). Turbo is spinning ( seized bearings--jammed turbine / compressor wheel) supercharger belt is in good condition and properly adjusted.

May 09, 2014 | Cars & Trucks

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Check engine light obd code po171,po300,po302,po303 1997 camry 2.2 ltr.

PO171 OBD2 Code basically this means that an oxygen sensor in bank 1 has detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes.

his code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses that reading and adjusts to keep the engine running at that optimum ratio of 14.7:1. If something is not right and the PCM cannot maintain the 14.7:1 ratio, but rather there is too much air, it triggers this code.

Nov 06, 2012 | 1997 Toyota Camry

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My 1995 bonniville 3.8 supercharged has spark and gas and wont start

if it starts up shortly and then dies it could be the fuel pump resistor that these cars have if its a supercharged car.this resistor is in the circuit to boost the pressure the pump puts out so the car will always have enough pressure when the supercharger is activated.its located on the passenger side between the inner and outer wheel well and you can get to it by going under the car and looking up and putting your hand up in the area you will feel it.its hard to get to,the wire connector for it is under the hood by the washer bottle area and is a 2 wire connector.have fun finding can install it under the hood if you can find an area that air flow will help keep it cool.

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1 Answer

How can you tell the differences between the cylinder head of a non-super charged and a supercharge Toyota Previa?

Hello. Welcome to FixYa. I am Toyota Ed; I will be assisting you today.

The differences 'side by side' are negligible. The main difference, one that you really cannot determine by the eye, is the size of the combustion chamber. On a supercharged Previa, the compression ratio is markedly lower, because of the supercharged air being sent into the engine. The combustion chamber on a supercharged engine is slightly larger, and the piston domes are shorter.

Note: All turbo and S/C engines have lower compression ratios than a normally asperated engine.

In short, putting a supercharged head on a normally asperated engine will give you very bad acceleration and drivability, due to the increased combustion chamber size. The lower compression of the S/C engine's head on a normal engine will have bad idle, poor acceleration, and bad hesitation.

To tell the difference, you need both variants of cylinder head, and measure the cubic centimeters of the combustion chambers with a liquid. The one that holds more volume is the S/C head.

Thanks for choosing FixYa for assistance today. I hope that my answer helpd you out.

Jan 10, 2011 | 1997 Toyota Previa

1 Answer

Mk3 Supra Turbo Boost Gauge Problems

The gauge is working fine, the turbo will not kick in untill the engine is spinning fast enough, as the turbo is propelled by exaughst from the engine. So, you can drive around normal and never use the turbo, and climb in the gas and spool the turbo up, what you are noticing is called turbo lag, which is the biggest down fall when compaired to superchargers!

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2006 Toyota Corolla Code P0171 What could be the problem?

po171 means the air fuel ratio is lean (not enough fuel) so you must check for anything that can do that a good example would be a vacuum leak that allows non metered air to enter the engine (more air same amount of fuel = lean mixture) or a clogged injector (same amount of air less fuel = lean mixture as well)

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3 Answers

I want to put Turbo to my Golf GTI VR6 98', what changes my engine needs? it needs new pistons? it needs special gasket?..... which is better for it, Turbo or Supercharger?

the amount of money and time it would require to turn your N/A (naturally aspirated) into a forced induction car(turbocharger, or supercharger), you would require the buttom end to be built, fueling, exahust, ecu(computer) forged rods/pistons/ then the turbo or super charger, also alot more, if you go to and click on the forums and look around, you can see the different setups people are running on their VW's AUDI's

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