I own a citroen c3 when i put the key in the ignition 2 faults appear seat belts/airbags and antipolution the car will not turn over I can hear relays clicking it wont start with a tow either we have checked all fuses, connections and have replaced the battery no one seems to know whats wrong can anyone help

SOURCE: car wont start

Do you hear fuel pump turn on? Turn the key to the start, but not all the way, you should here it hum. I have a 91 hatchback and it's right under the backseat. If you hear it, it could be your computer. My car would turn, crank, fuel pump. I finally swapped it w/a friends and it started up just fine. It's still going too. Hope it helps.

SOURCE: 2003 Saab 9-3 won't start. Battery appears to be fine.

You could try tapping the starter and/or having it checked by a mechanic. If the vehicle is starting once in a while, have a mechanic check the Crank Shaft Position Sensor located on the Intake Manifold under an aluminum bracket. The wire to the sensor leads towards the throttle body. the connector at the throttle body is blue. This sensor is notorious for giving out gradually. If this is the problem, seriously replace it as the vehicle could die when driving (i've heard, but don't quote me on that). I owned a 2001 9-3 turbo and the same thing would happen until it no longer cranked. I replaced it when i researched the issue on the internet. The car turned on as soon as i replaced it 8) and did not have the same problem again.

Good luck!

SOURCE: All at once? 2003 GMC Envoy XL

have the car scanned for trouble codes and get back to me with the codes. most major parts stores will do this for little or no charge,get back to me with the codes

SOURCE: (ENGINE won't TURNOVER) Just a "click" then nothing...

The reason car batteries do that is because the battery only runs your accessories and starts the car. The alternator runs the vehicle and charges the battery once it is started. If the battery is failing the charge provided by the alternator runs your accessories and the leftovercharge is displaced into the dead battery.

Testimonial: " Thanx for solving one of the "great mysteries" of the auto (to me), "Smokey"! (Do either of you make road calls?) :-)"

SOURCE: Car wont start and get a clicking sound from the relay box.

hi there, from my experience this sounds like a simple starter motor failure, remove the starter and test in on a bench before replacing,
any other help please ask
regards roger