Anti Pollution, And Several Errors

[stereotypical]

Hi All,

 

 

I just got a used C8 year 2003. 

 

Several errors just popped up with the anti pollution error, From the scanner it says:-

 

P0121

Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem

 

 

P1133

Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1 (Rear Bank)

 

P1153

Heated Oxygen Sensor (HO2S) insufficient switching bank 2 sensor 1 (Front Bank)

 

Yesterday night it was perfectly fine, no errors, then parked the car at the supermarket, came back and the car couldn't start, kept saying immobiliser fault. And then after a while of waiting around it managed to start, but the rev was completely crazy it went up and down as if it was going to die out

 

and then it dies out, 2nd try again, i rev the car high up and let it go it drops straight and dies. 

 

Third try again restart, rev goes up and then drops and dies

 

Fourth try, it manages to hold but was wobbly, then i immediately drove back home, it kept dying as i was about to slow down or stop but luckily i kept fligging the auto gear to neutral and press on the throttle so it doesnt die out. Reached home and as i parked the car died again but thank goodness we reached home.  

 

Those error codes are the only ones showing. Any ideas, I called one citroen specialist and he tried to rip me off by saying that the engine is choking and there's carbon build up around the heads and i would have to remove all of it and replace it with a custom made one, which will cost me 4 grand, so i told him my kidneys don't cost that much. 

 

Any of you guys know about this issues? My mileage is at 114000kms at the moment and have no idea what has the previous owner done with the servicing and etc. 

 

I've got a leak on the coolant pipe underneath the engine not sure if its related or not. 

 

greatful if u guys can give me some help here. 

[stereotypical]

sorry forgot to mention its a 2 liter petrol engine

[coastline taxis]

Start by checking all the vacum pipes for leaks and give the throttle body a good clean as these 2 items will control the rev,s and idle

[stereotypical]

yeap that did the trick, took out the throttle body, erased the errors, all working fine now, finger crossed nothing pops up again  :D

 

can't believe one mechanic was gonna charge me 4 grand for that! geez

[coastline taxis]

Thanks for getting back to us .   just make it a regular thing on the petrol engine to clean it once every 6 months. another tip is to rub vaseline on all rubber pipes to help keep them supple and stops them cracking.