dwayne Posted July 2, 2011 Share Posted July 2, 2011 i have been having real problems with idle being too high lately so this morning i went out for another look around the vac lines and noticed my VPC sensor was a bit loose in the manifold and when i turned it i realized that it had actually snapped off on the thread. the car was running when i unclipped the wire and the idle immediatly went back to the norm and i have now managed to get the rest of it out without dropping anything into the engine. does anyone know if there is any drawbacks to not replacing this? i have HKS fcon v PRO engine management so i assume this sensor was sending bad signals to it which have been sending my idle speeds all over the place. i'd just like to know what it actually controls for sure and if there is any reason why i cant just leave it off. i know i should probably get another one but at the moment my car has never ran so smooth, i think the faulty sensor was making it far too rich any advice will be greatly appreciated Quote Link to comment Share on other sites More sharing options...
dwayne Posted July 2, 2011 Author Share Posted July 2, 2011 just noticed its idling at 12-1300rpm which is about warm up temp so i'm guessing thats what it'll do untill i put a new sensor in? still a lot better than it was though Quote Link to comment Share on other sites More sharing options...
dwayne Posted July 3, 2011 Author Share Posted July 3, 2011 this is the sensor thats snapped http://img32.imageshack.us/img32/7795/87929926.jpg i know the vpc itself has been discontinued but the sensor can still be bought for around £35-40 from USA, does anyone know if any other sensor will work or whether they can be bought from over here? seems a lot of money for something like this especially as its not the strongest of things Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 3, 2011 Share Posted July 3, 2011 They sound very cheap, considering a stock MAP sensor from Toyota is over £300. I would say you definitely do need to replace it. Do you need the FCON though? I don't know the spec of your engine, would a stock ecu run it? Quote Link to comment Share on other sites More sharing options...
dwayne Posted July 3, 2011 Author Share Posted July 3, 2011 (edited) the guy i got the car from was planning some big mods i think but never got around to the single turbo, clutch and better brakes. it has standard internals as far as i know but its full bpu with TDI stage 3 hybrid twins (turbos failed on previous owner so he bought these), HKS fuel rail with 1000cc injectors and pretty much everything else you'd need to go single. all the work was done at TDI cos when i got the car the guy gave me about 15k's worth of receipts for the parts and work carried out. i would like to keep the fcon assuming it will work on a single cos thats my future plans but i'm pretty sure just about everything i have on the car is overkill at the moment. there is no fuel pump in the receipts so i assume thats standard that price does look cheap compared to toyota so i guess i better get one asap cheers chris Edited July 3, 2011 by dwayne (see edit history) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.