Hello,
I have recently replaced my factory turbo on s5 13bt. ever since i have had timing/tps related problems, i get bucking, hessitation/backfiring around 4000rpm and above(secondary injector rpm)
i have had injectors professionally cleaned which made no difference so i have unplugged TPS and adjusted timing which worked for brief time but am still getting the same symptoms at high rpm.

At this stage i am assuming my TPS has failed due to the resistance i am receiving
as per pictures
1k ohm is throttle in idle position
7.37k ohm is throttle in full open position

could my TPS be the cause of my problem with that resistance?


idle

full open accelerator

 

Seems correct to me.

As long as the measurement is smooth throughout.

 

FSM-Full throttle 4.0-6.0k(narrow range)
Try to adjust the TPS, on a warm engine, using the 3 pin check
connector as specified in the FSM.

 

do a voltage sweep test, sometimes the ohm test is inconclusive. but if it is doing it without the tps plugged in then you can pretty much rule it out anyways as the cause.

 

i fixed my hesitation by checking my secondary injector plugs. one of the connecting pins in the plug itself got pushed back and was unable to fire my injector. i ended up cutting that plug off and crimped another plug and electrical taped it.