306 hdi maf sensor - scfc_151
can someone tell me if the maf sensor would play a big role in the performance/economy etc of the engine? i.e if this is dirty or needs replacing? would a fault here cause the engine management light to come on?

Where is this located in the engine cheers
306 hdi maf sensor - Collos25
Yes it would but so would many other items you need it on a dianostic machine replacing high cost parts willy nilly in the hope you pick the correct one is big mistake.
306 hdi maf sensor - scfc_151
cheers andy i got a diagnostic done its come up with throttle position sensor so ill replace that. How much of a difference does that make its its out?

cheers