rough idle issue

[flashbsd]

Hi all, noticed that once the car is warm, the idleing is a bit jumpy, say 100rpm in the 900rpm range. is it me being paranoid?

when i 1st got it was smooth as anything. not had its service yet..

also anybody work out why the electric windows have decided to stop 99% and needing an extra push of the button to seal them tightly?

thanks all

 

[Stevo1]

How long has it been without a service? Sounds minor, but its amazing how many rough idling problems are solved by an oil change, etc...
I would be interested in the window solution as well, ive tried the old hold for 10 second trick but to no avail

 

[flashbsd]

hi mate, i need to double check, but it could be 2004 sometime, not long had the car, and had its major 40k service already, 22k on the clock mind you

 

[flashbsd]

jan 2004! oops

 

[cuprabaz]

Is you car a 1.8t?

Idle can be effected by a dead dv if it's 1.8t.

 

[flashbsd]

yep sure is. i think im going t obook iti n for a inspection service, as its done 6k since jan 04, so doesnt need a major service. and get them to change brake fluid on top etc. ill get them to take a look when its in there cheers for ya help guys

 

[cupra_matt]

Its probably the DV or the coolant temp sender. Temp sender is a common problem on the 1.8T. Does it start first time every time?

 

[Fl@pper]

coolant temp sender. Temp sender is a common problem on the 1.8T

common old fault since VAG took over on anything remotely injected - wierd huh? maybe i should start a reliable temp sender company - all manufacturers seem to suffer the same fault

signs for that usually show as a change of running once off the *choke* stage

ie

runs fine when cold - crap when warmed up
or
crap when cold - great once warm

if it helps

 

[flashbsd]

cheers guys, starts 1st time every time! flap you got any prices on temp senders? or replacement dv incase so i can query price?

 

[Fl@pper]

for a 20vt - from memory is a blue 4 pin in the water hose housing

about £20 odd

 

[flashbsd]

cheers mate, booked it in for a inspection service, with 20k extra's to be done.

e.g. Pollen filter etc, mentioned the rough idle and hopefully they will sort it.

got courtest car too all be it a 1.2 mk4. get me to work ok

he said 140 for service plus a brake fluid change, @ 44.95. which i want done as when my clutch master cylinder went, it lost some of the fluid

 

[Terra78]

Hi there Fla@pper, I've had a rough idle problem for over 6 months (Ibiza 97 2.0 GTI 16v Cupra) and noticed that it only runs crap when it has reached operating temp. Changed temp sensor, coolant sensor, throttle position sensor and a few Vacuum hoses but you reckon it's the temp sender?

 

[Terra78]

I refuse to give up on this motor