Quote:
Originally Posted by skv70d5
Sometimes if I accellerate hard it goes into limp mode causing the car to drop below 70kmh, but when i stop and turn the engine off and then on again it operates fine once more.
I of course will run through https://www.volvoforums.org.uk/showt...ighlight=p0244 when I have time.
I have used an "Intey My-021 OBDII/EOBD + CAN" tool, so my rev counter figures are not going to be that acurate.
MAP:
Ignition on engine off = 149
Idle = 97
~2.2K = 137
MAF:
ignition on engine off = 11.8
Idle = 16.8
~1K = 16.8
~2.2K = 54.5
~3K = 57.1
~4K = 79.4
I replaced the IC last year. |
MAP reading, with engine off you should NOT be getting 149 kpa
you should be getting about 100-102 kpa
MAF reading, with the engine off you should NOT be reading 11.8
you should be reading 0.0 -0.1
your reading of 16.8 at idle and the same at 1000rpm are wrong , at 1000rpm it should read higher, not the same,
can you please test this again, and see that the idle is at 700rpm,
can you get hold of another reader, have you got an android phone/tablet if so get a Bluetooth adapter and use the Torque app,
by both of these test I would say that your map sensor and your maf sensor are bad, but you need to check that it is not the reader that is reading wrong,
when you are taking the reading with the car on but engine of, is the reader definitely talking/connected to the ECU ?
Can you re-run these tests before starting the engine, so just have the key on Pos ll,
Dave