Has any one DIY a TPS replacement?
 

I need to replace the fault throttle position switch on my 1991 560 SEL. Per CD, one will have to remove the whole air flow meter/fuel distributor. I found only four bolts that hold the whole piece to the intake. The most difficult part is about removing those fuel lines.

Dealer is asking for $500 P and L. So I will be doing it myself and need your kind support. Any tips and suggestions will be greatly appreciated.