fast idle and loads of mist

[lancerevo3]

for the past two weeks my car now idles at 1500rpm [before was 800-900rpm].
also it continually has white mist which i presume is unburnt fuel comming out the exhaust as if its stuck in cold start mode.
checked codes and all i get is 23 and 24 from abs light.
its not using abnormal amounts of fuel ,not burning oil or loosing coolant.
just this mist following me around no matter how long i drive it.

any input appreciated
mark

[Nick Mann]

It's quite normal for the VR4 to do that in cold weather when idling and cold. It shouldn't be doing it after a good drive though.

If you aren't losing any fluids and there is no mayonnaise on the oil cap or the rad cap then I'm not sure what to suggest next. Have the coolant checked with a head gasket failure kit or get the emissions checked?

[lancerevo3]

ill get emissions checked when im driving it next week ,bit of a strange one at present

[Turbo_Steve]

Temperature sensor may have failed.

Less likely, but a vacuum leak?

[lancerevo3]

Temperature sensor may have failed.

Less likely, but a vacuum leak?

would the temp sensor show up on fault codes ?
ill do a leak tst tomorrow

[CARMEL120]

did you smell inside the coolant expansion tank for a petrol smell

[lancerevo3]

[QUOTE=CARMEL120;612066]did you smell inside the coolant expansion tank for a petrol smell
no i didnt but i will tomorrow

[exevoowner]

mine does this every mornin for bout 20mins but once warm it clears but if really cold n i boot it the mist apperes again think it the moisture in the air with it being so cold

[lancerevo3]

mine does this every mornin for bout 20mins but once warm it clears but if really cold n i boot it the mist apperes again think it the moisture in the air with it being so cold

if you let it idle after a spin will yours still mist if the weathers cold?

[The Vee]

That is normal especially on bigger exhausts / engines. It is the warm gases on a reletively cold exhaust and causing condensation to form. It's No.1 cause of exhausts rotting out from the inside.

[lancerevo3]

That is normal especially on bigger exhausts / engines. It is the warm gases on a reletively cold exhaust and causing condensation to form. It's No.1 cause of exhausts rotting out from the inside.

exhaust is fairly big so maybe its nothing fingers crossed as im heading to mondello next month