Technical Doblo serious lack of power/MAF fault 1.9jtd

[Bertyboy01]

Hi first time on this site so go easy on me.....
Have a Doblo that has a serious lack of power. If we disconect the MAF it runs much much better. Falut code read the ecu and checked live data. No fault codes stored but the MAF readings were way down. So changed air folw meter, still no performance.

So i set about checking egr system all seems to be working, egr valve not stuck. If i disconect the egr valve it still has no power. Does anyone know if there is a MAP sensor on this model?

To the rear of the engine just behind the inlet manifold there is an intake manifold air control solenoid, any ideas how to test it.
:bang:

 

[RichDoblo120]

"T" should be able to help you.

This thread might have some useful info in it or try a search in the Doblo section.

 

[Bertyboy01]

Thanks for the reply Rich. I read that thread earlier before i posted my problem. I couldn't see what actually was the cause of the fault though.
It does sound very similar to my problem.

 

[RichDoblo120]

If T14086 spots this thread he should be able to help but please don't PM him .
Sorry I can't help you any further.

 

[T14086]

Quickest way to check EGR is to blank it off,disconnecting it electrically wont help.

Also look out for loose/broken/split hoses,overboost valve and MAP sensor.

You dont state year/mileage but most common is EGR.....but test as above before replacing.

 

[Bertyboy01]

Thanks for the reply T. The year is 2003, 90,000 miles.
I have checked all hoses and connections but will check again. Can you tell me where the MAP sensor is?

 

[T14086]

Have a look at the back of the engine from the top,just to left of EGR valve.

Rectangular sensor about 3 inches long with 3 wire connector on it,held in by one 20 torx screw.Check by measuring voltage output.

 

[Bertyboy01]

Thanks alot T, most helpful. I will check and post back.