charlesmctegart

The new MAF sensor shows a rock solid 0.23 gms / sec when tested as per the TOYOTA method. So I know now my new Maf sensor is in good working order. I'll be doing a 750 mile round trip soon so I will see if B1S2 O2 sensor is still unhappy. CMcT.

Thanks for that! Exactly what I'm looking for. I have bought and fitted a new MAF. Its readings are higher than the old one. I'm going to test the new one by the method you have sent me . Regards Charles mc t

Does anyone know what the maf figures in gms/sec should be for my 2009 Auris 1.3, petrol , dual vvti should be. I'm getting;- idle - 1.43 g/s / 1000 revs 1.92 g/s / 2000 revs 3.46 g/s / 3000 revs 5.56 g/s from live data on my OBD2 reader ,at normal engine operating temperature. Every 200 miles I get a fault code for O2 bank 1 sensor 2 - electric circuit, and once I got a lean mixture fault code. The O2 sensors are both new. Some guides say idle maf rate should be 2 - 7 gms/sec at tickover , going up to 15-25 g/s at 2500 revs . If this is true the maf sensor is miles out and probably resulting in an under fuelled engine. It returned 49mpg on a 700 mile round trip recently which is ok in my opinion. I'm thinking the Maf sensor is on the way out !

The kit I used to clean out the catalylitic convertor of My 2009 Toyota Auris 1.3 dual vvti (with 100,000 miles on the clock ), here in the UK, is called;- 9201 Mannol catalytic system cleaner. petrol.

Hi there, I have a solution to my problem of the Auris not going up a hill . It had not been serviced very well, the old oil filter was like a piece of wood when I removed it during a serious service. What really made a difference was cleaning out the Catylic Convertor. A kit that drips a cleaning fluid via a needle into the air intake after the MAF sensor whilst the engine is on tick over did the trick. I've just done a 700 mile round trip with great success. You know , in the current economic climate the fix arrived just in time. Happy days !!!

Thanks for your input. ...............Food for thought !!

Yes, When recovering from a near stall on a hill , I de-clutch and press the accelerator the revs rise to a big number and I slip the clutch and move off in 1st gear. So The car will deliver high revs given the chance . That seems to work against the fuel starvation and blocked exhaust thoughts I am having. You de-clutch to get the revs to rise up ?

Thanks for your reply Done the MAF and tested it with a multi meter. Its functioning. as is the throttle body.

Not a clogged filter but a "reduced flow" which works until you make a larger demand for fuel. Or the fuel pump worn out. I was looking for someone to say " the same thing happened to me and "this" cured it."

Sorry for the tardy reply but I have been out all day

Thank you for your comments. The clutch is fine. I am thinking fuel flow reduced by crud or blocked filter. Or flagging throttle body not quite doing what it should in terms of position sensor or throttle butterfly motor.

hi there, I have bought a Toyota Auris 2009 1.3 dual vvti. It has 99000 miles on the clock. On the straight and narrow it goes ok with a little throttle lag. Starting on a hill and moving off is an impossibility ! It will move off in 1st ok then as soon as you select 2nd gear it just goes flat and comes to a stop. You need to de clutch and select 1st gear whilst revving the engine, to move off ! It is showing no obd 2 fault codes and I have worked my way through electronic testing of the throttle, maf and mat. sensors, cleaned the EGR valve, cleaned the vvti selector valves, and it still will not drive up a hill unless you get up to 70mph before you hit the slope! Any ideas of what is going on here, .... because it functions well on a level road. 😟