Thread: Prado Questions

If it has the 3 litre D4D engine then Make sure you keep the MAP sensor filter clean, this keeps your boost in time with the throttle, restores lost boost, and also keep your airflow sensor clean to avoid horsepower loss.

All Hiluxes benefit from this service as well.

First remove plastic engine cover



The MAP sensor filter is the filter centre pic with the grey base and black top, it has a gauze inside which gets filled with engine breather oil mist and slows boost response dramatically.

Use carb cleaner ONLY and spray it into the grey base intake until no more black contaminate comes out

Lightly blow with compressed air until clear of carb cleaner., reinstall.





The airflow sensor is nearly on top of the airfilter



There is no need to remove the electrical fitting, just remove the two screws and twist as you lift out, the airflow sensor looks like two wires with a resin covered resistor at the end.

Spray clean with mass Air Flow Sensor cleaner ONLY

Dont be a cheap bastard and try a home remedy, supercheap have the crc or nulon aerosol product, do it right and you will have a clean resistor with no residue on it, follow the instructions on the can.

When clean you will see the resistor is a slightly yellow colour and you can see the shiny wires inside it.

Reassemble.

Fuel usage with 40 psi in road tyres should average 7.7 litres per 100km.


Dont get me started on disabling EGR valves and the carbon they put in the inlet manifold.

Research putting a filter (catch can with filter) in the engine breather pipe so it removes the oil mist before it enters the inlet manifold (and unfortunately enables carbon buildup there )

Check every 10,000 km when you do a service and you will maintain top fuel economy.

The D4D engines like Shell Helix ultra 5W - 40


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Haha thanks Saum.

Test drove a 2015 yesterday with the new 2.8l diesel 6 speed auto. Can't find much info on the engine - anyone in the know? General consensus online seems to be positive but I wonder if it's as reliable as the older 3l?

Definitely seemed quieter than the hiluxes i'm used to driving. Power is hard to compare as hiluxes take off quicker being smaller and lighter.