Merv Posted 12November, 2019 Report Share Posted 12November, 2019 My throttle position sensor 'should', if I understand the Bentley correctly, trigger the WOT/Full throttle response? I can hear the microswitch at the back of the throttle/accelerator lever clicking off idle, but no click noise when the accelerator lever is fully open (WOT). I checked the continuity across the top two terminals on the TPS and there is none. I rotated the TPS back and forth and still no continuity. What are the options? Remove the TPS and replace it? If so, how does it come off? If I release the two small screws attaching it, it seems to want to stay on there? Can these even be repaired? Quote Link to comment Share on other sites More sharing options...
Merv Posted 13November, 2019 Author Report Share Posted 13November, 2019 A rather esoteric issue I realise but these TPS units are hard to get these days according to James at Autohaus. I removed the TPS and set it up on the bench with proper connectors and was ready to split it to find out what the problem was. Beforehand I gave it a good spray out with automotive contact cleaner and then vacuumed it out gently. Now it works! I get continuity around 80% throttle opening. Will re-install and test again there. JWM 1 Quote Link to comment Share on other sites More sharing options...
P-Kay Posted 13November, 2019 Report Share Posted 13November, 2019 Good result! Quote Link to comment Share on other sites More sharing options...
Merv Posted 13November, 2019 Author Report Share Posted 13November, 2019 Spoke too soon. Reinstalled and it is kaput again! No continuity at WOT. So will cut the thing open and see if I can fix the potentiometer inside. Quote Link to comment Share on other sites More sharing options...
Uncle Posted 13November, 2019 Report Share Posted 13November, 2019 I may have one floating around in my toolbox. I'll check for you when I get home. If I do I'll pop it in the post. firstone 1 Quote Link to comment Share on other sites More sharing options...
Merv Posted 13November, 2019 Author Report Share Posted 13November, 2019 Great thanks! I was just about to ask around. Quote Link to comment Share on other sites More sharing options...
Peter M Posted 13November, 2019 Report Share Posted 13November, 2019 4 hours ago, Merv said: So will cut the thing open and see if I can fix the potentiometer inside. Merv, The TPS on a 3.2 is a simple switch with a capacitor across the contacts. If you can open the case OK - looks like it just clips together - you should be able to clean the contacts. Alternatively I have the spare that @Uncle gave me from his toolbox a few years ago that you can have......😊 Part no. 944 606 113 01 or Bosch no. 0 280 120 309 firstone and Uncle 2 Quote Link to comment Share on other sites More sharing options...
Merv Posted 13November, 2019 Author Report Share Posted 13November, 2019 Thanks Peter. This one is solidly glued together and would need the services of a dremel! One below - not mine. Yes, if Uncle no longer has the one he mentioned I will certainly take you up on that offer of your spare. That is most kind. Will send a PM. Quote Link to comment Share on other sites More sharing options...
Uncle Posted 14November, 2019 Report Share Posted 14November, 2019 Yeah not in my toolbox and I pretty much gave Peter everything I had floating around. That must be it. Peter M 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 14November, 2019 Report Share Posted 14November, 2019 Martin's gift to you Merv is in the post today. Dreamr, Uncle and GC9911 2 1 Quote Link to comment Share on other sites More sharing options...
Merv Posted 14November, 2019 Author Report Share Posted 14November, 2019 😊 Peter and Martin! Peter M 1 Quote Link to comment Share on other sites More sharing options...
Uncle Posted 17November, 2019 Report Share Posted 17November, 2019 Don't look at me I did very little! Quote Link to comment Share on other sites More sharing options...
OZ930 Posted 18November, 2019 Report Share Posted 18November, 2019 42 minutes ago, Uncle said: Don't look at me I did very little! But you did it so well 😂 Quote Link to comment Share on other sites More sharing options...
Uncle Posted 18November, 2019 Report Share Posted 18November, 2019 I aim to please! Quote Link to comment Share on other sites More sharing options...
Merv Posted 18November, 2019 Author Report Share Posted 18November, 2019 Again, thanks gentlemen. Arrived today, tested and fitted. That lower screw is a pain to get at .. Seems much better and now I can actually adjust the WOT position at the TB without having to extend the travel at the accelerator pedal. firstone 1 Quote Link to comment Share on other sites More sharing options...
Merv Posted 20November, 2019 Author Report Share Posted 20November, 2019 I pulled the old one apart and had to use a fine hacksaw blade as it had been glued together. Inside, the flexible brass arms needed a little reshaping and some dielectric grease on the shaft that fits over the throttle arm. The continuity point now works on the potentiometer. Reglued it together and its now available as an emergency spare if someone needs one. firstone and Peter M 2 Quote Link to comment Share on other sites More sharing options...
sus911 Posted 20November, 2019 Report Share Posted 20November, 2019 Nice work Merv! Merv 1 Quote Link to comment Share on other sites More sharing options...
sus911 Posted 4August, 2022 Report Share Posted 4August, 2022 Just got my 10 ponies back! Peter M 1 Quote Link to comment Share on other sites More sharing options...
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