big lack of power and code 12

[Ben2244]

Ok guys I need your help. I have a prado LJ78 and I had a starting problem. We shop got it fix by changing a sencer on the fuel pump but since that I got a new problem. The engine light is on and that give us a code 12 (valve in the pump). I lost a lot of power can`t go over 80 Km/h and the Turbo light don`t go on at around 2 500 rpm like it use to. So I don`t think the turbo is working. The garage think than I should now change the fuel pump. But I wonder why the pump would be bad sudently after changing a sencer.

Anyone have any idea? What would you do. And can we rebuid thoses pump insted than changing them.

Ben

 

[roscoFJ73]

Ok guys I need your help. I have a prado LJ78 and I had a starting problem. We shop got it fix by changing a sencer on the fuel pump but since that I got a new problem. The engine light is on and that give us a code 12 (valve in the pump). I lost a lot of power can`t go over 80 Km/h and the Turbo light don`t go on at around 2 500 rpm like it use to. So I don`t think the turbo is working. The garage think than I should now change the fuel pump. But I wonder why the pump would be bad sudently after changing a sencer.

Anyone have any idea? What would you do. And can we rebuid thoses pump insted than changing them.

Ben

You can rebuild the pump but I wouldnt do so yet.
Your shop sounds like amateurs who want to keep replacing items at your expense until somethings works.
A proper diesel shop would pull the pump off and test it on a machine for pump pressure.

But I would be investigating the turbo problem 1st.
Pumps rarely go bad overnight

 

[UpsideDown]

LJ78s are notorious for problems relating to fuel delivery and cylinder head failures....

It may be the pump, but there are other sensors that control fuel delivery volume - the temp sender on the side of the block under the intake manifold is one of the main ones.

Changing to a non-electronic injection pump is a better solution than replacing the 2LTE's electronic pump. These can be had from a 3L, but may require slight recalibration.

There are no English (or non-Japanese, rather) language manuals for the 2LTE that I have been able to find. There are manuals for the 1KZTE in English available online - the injection systems are nearly identical from what I can tell.

Your turbo boost light should come on well before 2,500 rpm depending on load.