The above salls either at idle or coming to a halt. It then refuses to start for some time. It cranks fine but doesn't start. It also often refuses to start after it has been used and parked up for a while. When you return to it it won't start. I keep trying it every few minutes until it starts. My local Citroen dealers has put a new throttle body on it and an O2 sensor. They made no difference. It has had a new fuel and air filter. I have notice that the idle control vavle? On the end of the throttle body make a continuous buzzing noise when it won't start. When stopping normally it buzzes and whirls for a short while like something is resetting.
Check the fuel pump pressure. We don't have any info on these vehicles at all so I cna't give you a spec. Thenclean the idle control with choke cleaner as well as throttleplate as they getgummy and make a car stall. You might try tapping the iac when it buzzes. See if it helps.
September, 19, 2011 AT 9:49 PM
It's had a new throttle body, so the reply doesn't seem relevent. I have tried tapping it. Why would it buzz?
September, 19, 2011 AT 10:29 PM
It might buzz if it's wasnt' set correctly. They have to be set at a certain distance then usually you have to drivethe vehicle over 30 mph for it to getit's correct distance. Or it cold also be defective.
December, 9, 2011 AT 6:46 AM
I'm having the same problem and no solution! I have changed al lot of parts. At the moment i'm looking for a fuelrelais that might be a problem. Also check all connectors for oxidation and spray contactspray on 'm. I hope there is somebody reconizng this problem because it's very irritating.
December, 29, 2011 AT 9:31 PM
The last garage I had the car in found some corrosion on a couple of the ECU pins. They cleaned them up as best they could, but the fault still remains. I have now taken the Picasso off the road an hope to find time to look at it myself. Have you made any progress Greetz. Hope you have a better year car wise in 2012
January, 27, 2012 AT 4:07 AM
Have either of you found a fix for your problem? Have you cleaned and reset the IAC?
February, 27, 2012 AT 10:33 PM
No fix yet. The car is still in my garage. Been to busy stopping my house falling apart to have a look at it. Oh woe is me? Is the IAC on the throttle manifold? How do you reset it? Many thanks for your interest.
February, 27, 2012 AT 11:10 PM
Yes, the IAC is near the throttle body. It gets removed and cleaned with either a carb and choke cleaner or an electrical parts cleaner.