Don't say I didn't warn you about an ECU reset proceedure on a Q-system m8
they really don't respond kindly to it as manuals do! Way too much for the ECU's and the lexus/toyota derived autobox to handle in one go.
Yes... It is worth the extra money for a top notch MAF. It should sort the issue out. But.. let it re-laern the new settings gently and over time ok m8
think its worth while really, she is 10yrs old and not had a new one to my knowledge so im sure its a strong possibility
also one more thing which for some odd reason i never thought of till now, i had a new (second hand) downpipe sent to me to replace my "flattend and ruined" one, the one i was sent was off a car the same year as mine but for some reason the lambda sensors were in a different place. i didnt think much of this and simply "extended" the wire of one of the sensors and placed it in the other hole in the downpipe
this all seems simple enough however.....
my car had 2 lambda sensors....one of which "rearmost one" was mounted in one of the manifolds....the other was mounted on the down pipe where the other manifold meets the downpipe
now the car i got the part from has the rearmost sensor in the same place however the other hole for a sensor is on the downpipe where it meets the cat
this has lead me to think now that this could be confusing the computer.......
before this downpipe was fitted each lambda sensor was reading the gasses from 3 of the cylinders.....now its been fitted, one of the sensors is reading 3 of the cylinders and the other is reading the total gasses from all 6 cylinders....seems plausable to me that this could cause it
just one more bit of confusion though... i fitted the downpipe 2days before disconnecting the battery but it was running fine then???