How did it run before dropping into limp mode? Did blocking the EGR make it start & run better? Less smoke?
The MAF sensor is used to provide feedback about the operation of the EGR system to the PCM. With the system blocked there will be no change in mass air flow when the PCM is commanding the EGR valve open, which might be the cause of the MAF trouble code.
I forgot that I had another egr valve what a garage let me have years ago when they changed the old egr valve, it works %100, there was a bit of blue smoke at first when it warmed up it stopped, then wouldn't accelerate above 3 to 4000 revs ( I think) I wasn't taking much notice, I have an idea that a injector is not seated properly, clear smoke when warmed up.
engine fine no exhaust smoke that's bad, won't rev above 3000rpm and fault code P0101 stays off until engine turned off and then mill light comes on when ignition turned on again, clear fault and same thing all over again , ?
Does it drive any better with the MAF sensor disconnected?
Can you check the boost pressure on your scan tool data list?
With the ignition on/engine off the boost pressure should be equal to atmospheric pressure (approx 1000mb/1bar/14psi).
Next, start the engine and see if the pressure changes with the engine at idle.
just checked wiring again and I had put 12v orange wire to pin2 nd green 0v to pin 2, changed them round and no fault code pending, so all clear regarding fault codes. the MAP reading is 96 kpa and MAF 0.88 gls with engine not running, MAP 100kpa MAF from 13. to under 14 gls with engine running, no different in engine with MAF connector removed, still won't go above 3000 rpm
Obviously a typo there. Both those wires couldn't have been on pin 2. The +12V should be pin 1 and ground should be pin 2, according to the diagram at post #13.
MAP/Boost pressure sounds OK. 100kpa = 1bar, so it's right where it should be.
Did you check the boost pressure/MAP during test drive? Get the car into 4th gear then floor the throttle and see how much boost is shown. You should see about 200kpa if the boost pressure system is working properly.
took car for a run, map ran up to 218 kpa, at one point would not go above 40mph,slowed down turned round and went up to just short of 50mph, map 118 - 218kph
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