Discovery 2 Kangarooing ??

Keithmilne said:

Hi great forum
Got a discovery 2 2.5 td5 and at around 2750rpm it starts kangarooing, swap tested the map sensor the maf sensor mate plugged it into a snap on scanner and it came up with a manifold preasure fault any got any ideas ??? The previous owner changed the injector loom.
Thanks in advance Keith

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sierrafery said:

did u check the (AAP) ambient air temp and pressure sensor then?....it's the one on the top of the filter housing......u better replace it cos(according to RAVE) :
The ECM uses the signal from the AAP sensor for the following functions:
1. To maintain manifold boost pressure.
2. To reduce exhaust smoke emissions while driving at high altitude.
3. Control of the EGR system.
The sensor also supplies a voltage between 0v and 5v proportional to ambient temperature. The ECM uses this signal
for the following functions:
- Exhaust gas over temperature protection.
- Turbocharger overspeed protection.

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Keithmilne said:

Hi is there a test to confirm that the AAPP sensor is faulty ??

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