318i Auto woes.perfect car with new MOT throws in towel.

[povertyspec]

got a 1999 318i touring, mint , loaded,all toys working,new tires,new mot,strong engine but.....the auto box isnt getting much power from the engine.junctions are hairy,but up at 30mph plus its fine. i have narrowed it down (maybe) to the torque converter. manual selection no better.if the seals go and pressure drops is it the end?. ecu ok i think and ABS, ACS lights out, wheel speeds sensors not checked tho.any common faults that cause the auto box to play up.
its really far too good to scrap but i might have to think long and hard about changing a major part.

[Andyboy]

Could be the idle control valve on the throttle body. This is ASC controlled and when they go tits up the engine bogs down and has bugger all power.

[povertyspec]

wouldn this show up as a fault on the diagnostics thingy?

[Andyboy]

No.

[DanThe]

As its Bosch management there could be 20 faults that the ECU doesn't know about

[Andyboy]

You'd have as much luck code reading a Morris Oxford as an E36.