Hello, I have strange problem, diagnosis will not show any faults related to this problem. I take a look in a Mass air flow LIVE parameter readings and this is what I get:
when engine is cold and below 80 Celsius it works like a charm no vibrations anything, once it reaches 81-95C it start to vibrate on idle till 1000RPM, and then everything is fine.
1) MAF readings below 80 Celsius is same
DESIRED: Steady ~350Mg/Hub and ACTUAL: ~320-355Mg/Hub seems okay and no vibrations.
2) Problem is here: MAF readings when reaches 81-95C it starts to vibrate and MAF readings become's like this:
DESIRED: Fluctuates badly ~300-450Mg/Hub, ACTUAL: 320~430MG/Hub. (MAF IS NEW, and OLD SAME RESULTS)
So my question is maybe a fault DDE ECU? Why DESIRED readings starts to fluctuate it shouldn't do that, it should remain same or just a small increase decrease,but not like that. Who affect's DESIRED MAF readings over 81-95C ?
when engine is cold and below 80 Celsius it works like a charm no vibrations anything, once it reaches 81-95C it start to vibrate on idle till 1000RPM, and then everything is fine.
1) MAF readings below 80 Celsius is same
DESIRED: Steady ~350Mg/Hub and ACTUAL: ~320-355Mg/Hub seems okay and no vibrations.
2) Problem is here: MAF readings when reaches 81-95C it starts to vibrate and MAF readings become's like this:
DESIRED: Fluctuates badly ~300-450Mg/Hub, ACTUAL: 320~430MG/Hub. (MAF IS NEW, and OLD SAME RESULTS)
So my question is maybe a fault DDE ECU? Why DESIRED readings starts to fluctuate it shouldn't do that, it should remain same or just a small increase decrease,but not like that. Who affect's DESIRED MAF readings over 81-95C ?
Mar 25, 2017 at 12:02 PM
