No throttle response...

**GKDucati** · 21-07-2021,03:05 PM

Hi guys, 2007 Audi A4 Quattro Avant B7 2.0TDi.Manual transmission Car starts fine and ticks over. Throttle does nothing (apart from taking it from tickover to about 1050 RPM). Once engine is warmed up – the revs can be built up by moving accelerator pedal very slowly – once it reaches say 1500 rpm ish it accelerates OK - although sluggish throttle response - once it hits tickover again, its a slow to build it up again exercise. Car had a new turbo 2-3 K ago. It has DPF and EGR deleted (and has been mapped as well - all prior to my ownership). I have tried / fitted New throttle body, new throttle pedal complete, new MAF, fuel pump changed....No Fault codes showing at all (a couple of specialist garages have looked at it and they are baffled...)...car was running fine before problem occurred after a morning start. Disconnecting the MAF makes it run / rev better but have changed it anyway so its not a faulty MAF. No untoward noises etc. Any ideas as I am at a complete loss now... HELP!!

**Gazwould** · 22-07-2021,09:18 AM

Accelerator pedal has a throttle position sensor ?

**GKDucati** · 22-07-2021,09:38 AM

Originally Posted by Gazwould

Accelerator pedal has a throttle position sensor ?

Yes it does but have changed out the pedal complete with TPS and Throttle body...no change...this has moved on a little bit from my post yesterday - the plan is to remap the car back to stock to see if fault codes appear and then remap it to remove the DPF and EGR (this may have been done badly before I got the car - as someone could have removed everything to do with fault codes reporting in its remap...so I'm clearing the decks - going back to a stock map and then starting again. Hopefully the stock map will allow the car to report the fault code so I can sort that before remapping to remove DPF and EGR.