Danskidan Posted July 6, 2017 Report Share Posted July 6, 2017 Does anyone know why my car won't rev? Seems worse now we have warm weather? Keeps throwing up throttle actuator fault with ecu reader..... seems to pop up when I let off to coast to a junction? Could this be an idle air control Valve issue? I'm new to VW ant help advice would be much appreciated. Quote Link to comment Share on other sites More sharing options...
Rich Posted July 6, 2017 Report Share Posted July 6, 2017 what car is it? ignition components all good? Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 6, 2017 Author Report Share Posted July 6, 2017 1.4 SE 16v. Doesn't do it all the time, when it's running good it pulls really well. On inspection all ignition components look well... no damage to leads etc. It's had the throttle body changed by previous owner and had the pedal box done too apparently. Quote Link to comment Share on other sites More sharing options...
Rich Posted July 6, 2017 Report Share Posted July 6, 2017 16vs are normally good as well. you could try the pressure sensor on the inlet manifold? Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 6, 2017 Author Report Share Posted July 6, 2017 Thanks I'll pick up a new one and try that. Not sure if this will help but just been out and got these codes Quote Link to comment Share on other sites More sharing options...
Mobieus_uk Posted July 6, 2017 Report Share Posted July 6, 2017 you got 2 codes but they may end up being the same thing as they both seem to relate to the throttle assembly http://wiki.ross-tech.com/wiki/index.php/17950/P1542/005442 http://wiki.ross-tech.com/wiki/index.php/17953/P1545/005445 Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 6, 2017 Author Report Share Posted July 6, 2017 So it's looking like I need a new throttle assembly? How likely is it that taking it off and cleaning it is gonna make much difference? Would this throw up the manifold pressure too or should I look at replacing that sensor too? Massive thanks for your help up to now. This is my 1st VW.... Vauxhall, Ford or Scooby I pretty much now what causes what. Quote Link to comment Share on other sites More sharing options...
Rich Posted July 6, 2017 Report Share Posted July 6, 2017 blast it with carb cleaner at low revs, clip the plastic bit off and clean the contacts inside and check the soldering for dry joints. Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 6, 2017 Author Report Share Posted July 6, 2017 Cool cheers Rich..... I've just remembered ive got the old one the lad took off.... are they serviceable? I could clean the spare up n service then swap units if poss? Is there anyway of doing the basics settings without vcds/ vagcom? Quote Link to comment Share on other sites More sharing options...
Rich Posted July 6, 2017 Report Share Posted July 6, 2017 change it with the battery off and it should adapt itself after a few miles hopefully. Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 6, 2017 Author Report Share Posted July 6, 2017 Sweet thanks again..... gonna be my job for weekend.... I'll keep you updated. Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 9, 2017 Author Report Share Posted July 9, 2017 So I'm out on the drive way looking to clean the throttle body..... which doesn't look to bad tbh and I notice this.......... Is it supposed to look like that? It's the electrical connection for the throttle body if the picture is bad? Quote Link to comment Share on other sites More sharing options...
Rich Posted July 9, 2017 Report Share Posted July 9, 2017 doesn't look right.. Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 9, 2017 Author Report Share Posted July 9, 2017 Don't suppose you have a wiring diagram? Quote Link to comment Share on other sites More sharing options...
Danskidan Posted July 9, 2017 Author Report Share Posted July 9, 2017 Right..... those wires are dead.... I chased them back and they've been chopped at the other end too and a new throttle body connection wired in. I'm not sure I have the correct throttle body on my car someone please correct me of my thought process is wrong. In the included picture the bits I've coloured in blue are the mounts for the unit..... the bits in red I assume are locating holes for the locating pins that the gaskets & throttle body sit on? Mine don't line up? At all? Would a 1.6 throttle body fit? Would this have any benefit? Or a sport one rather than an SE? Or am I way off? Thanks in advance Quote Link to comment Share on other sites More sharing options...
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