RAU03MACH
Legend
its reading basically like potentiometer reading in current or voltage
sending signals
and you would need a star 2 tester for that
i go by fuel psi
sending signals
and you would need a star 2 tester for that
i go by fuel psi
They put a sensor into the tailpipe, ca. 40 cm deep. Then measure it at idle and ca. 2500rpm. Without load.How do they run the test anyway?
Tested at idle? Tested at 3000RPM? Under load on rollers? Or just holding RPM in nuetral?
Is the reading reflective of a result obtained exactly at that particular set of conditions?
Well this did not solve it unfortunately. Next I will change the spark plugs and inspect the O2 sensors. I will also ask someone to do a vacuum leak test with a proper smoke machine.I checked codes... Everywhere just 111, system pass.
But I noticed that the vacuum hose on the top of this part (is it a valve?) was kinda not fully attached. It was barely connected. I know it is on the line connected to the AIR pump, but don't know yet its function. Could this be related? Maybe it was not shutting down the air feed in closed loop?
Not yet. How can I check the cold air intake sensor? Which one is that?have you tried checking maff and cold air intake sensor on the air box tube
I found IAT Intake Air Temperature sensor in the manual, this is which you mean? Then I know how to check. I will have a look at it, thanks for the tip!have you tried checking maff and cold air intake sensor on the air box tube
O2 sensors replaced. Lambda values did not change much, they are still around 1,6 way too lean. What do you make of the old sensors, how do they look? They are the factory installed originals.They make a cleaner for them, CRC brand if I remember correctly. Just sprays on and dries really quickly. The MAF is in the air intake tube. DO NOT use anything other than MAF cleaner on it.