Technical Stil low ideling when hot

[Planeboy]

Hi Fiat fans

Today I cleaned my idle control valve with carb cleaner and my map sensor with contact cleaner. It solved my most recent problem of rough reving between idle and 2000rpm, but my car is stil ideling too low

When cold idle is perfect and when hot it drops so much to near point where sometimes it almost stalls but recovers. low oil pressure warning intermidiate on and off as ideling drops.

Anyone who can solve problem plz help! I checked pipes for crack nothing. bleeded coolant system, spark plugs, oil, oil filter and spark plug leads are quite new.

Could it be oxygen sensors? problem is worsening to point where i get oil light everyday now then I have to rev to eliminate it.

Milage is 142000km and oil is shell helix plus 10w40

Anyone can point problem to oxygen sensor or water temp sensor? timing belt is fine as it was running perfect till recently

Thanks too all always willing to advice and spend time to help us amateurs

 

[Planeboy]

sorry forgot to mention its a 2002 fiat seicento sporting 1.1 mpi

 

[Planeboy]

Sorry forgot to say its a 2002 fiat seicento 1.1 mpi

 

[rallycinq]

I guess you didn't actually check the timing?

Cheers

D

 

[Planeboy]

Rallycinq I respect your knowlidge you have and share but dnt you think if it was timing belt it would have had the low ideling right after it was done?

The timing belt has been in for a while

Could it slip?

 

[rallycinq]

Yes it could slip, it could also be only one tooth out causing the gardual build up of carbon, so you wouldn't notice it straight away.

Cheers

D

 

[slugworth1987]

i agree with RC here get your timing checked belts move, auto adjuster fail.