Polo 9n3 1.4TDI high idle

Chat about your 9n Polo (inc GT and Fun)
Post Reply
D_toland
New
Posts: 6
Joined: Tue Mar 13, 2012 6:50 pm

Polo 9n3 1.4TDI high idle

Post by D_toland »

Bought a 2007 polo 9n3 1.4TDI, when I start the car sometimes it idles at 1200 rpm after a bit it'll drop to 900 I hooked the car up it had alternator fault up so got it tested its 100% so probably faulty wire also showing was crank shaft sesnors so put this into it £90 still high idleing, if I was driving and I would clutch the car and brake the idle stays high then I release brake it drops to normal any ideas ? I've also replaced turbo in it. Thanks
User avatar
alexperkins
Site Admin
Posts: 14873
Joined: Sat Nov 11, 2006 5:29 pm
Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
Location: Poole, Dorset, UK.
Contact:

Re: Polo 9n3 1.4TDI high idle

Post by alexperkins »

What do you define as high idle in RPM?

You may have a split or disconnected vacuum hose
Ladiesman_317
Bronze Member
Posts: 189
Joined: Fri Dec 31, 2010 11:22 pm
Location: Surrey

Re: Polo 9n3 1.4TDI high idle

Post by Ladiesman_317 »

sticky idle air control valve?
Post Reply