Not starting.

jamesrabel wrote: ↑Wed Jul 20, 2022 9:48 am Yet again, find myself in a stupid situation. Car still doesnt start. Ordered OBD2 ready, a pretty cheap one that had good reviews. Figures that my c3 doesnt seem to support obd2, I heard something about VAN/CAN but i dont seem do get it. Any ideas on what software is needed to read and erase errors on this particular model?
(Obd2 reader works on my wifes car)

OBD2 should work on early petrol cars, if not, you may have a bad fuse for the diagnostic port, or a problem with the car.

Early diesels were not OBD2 compliant, and you must use lexia clone tool for it to read them. But read up about the laptop needed to run the lexia software here first.

Your option would be to use lexia on the petrol, it does more than any OBD only could, but if the problem is with your car diagnostic port, lexia can't work on that either.

Yes i have seen a lot of people recommending a lexia clone. Its a petrol 2003, but seems to not be obd2 compliant or like you say, faulty port. The port was used about 3 weeks ago by a professional, so it should be working.
Theres no way i can use a lexia clone because it requires a pc with a cd disc reader, and its over 160 euros, im not sure my car is even worth that.

I was wondering about the software because tecnically, if i can find how this vehicules ecu is coded, i can buy the specific reader for this car at a reasonable price. It wouldnt happen to be VAN would it?

All pre 2006 are VAN.

It doesn't affect Lexia because it can read both CAN and VAN.

Being VAN doesn't affect OBD2 as if the is car OBD2 compliant, then they can be CAN or VAN.

Ive read somewhere on the forum that the 1.4 petrol 2003 just doesnt work with classic obd2 readers, even the ones suggested on the forum. Only tool is lexia it seems, now i have to find a portable pc with a cd drive, windows 7 and 32 bits. This car is giving me nightmares I swear.

The VAN BUS cars do not have the 'CAN' lines at the OBDII port. So the OBDII scanner needs to be able to read the diagnostic port of the engine ECU directly. There is a diagnostic line up to the OBDII port from the engine ECU and the line is OBDII compliant.
It's possible some scanners might just poll the CAN BUS lines for data, in which case it wont work on a VAN BUS car.

Ah I see, so I would need to be looking for a obd2 reader that can do VAN BUS specifically in the description. Been looking for old pcs to no avail, seems like the lexia tool is gonna have to wait.

I have already posted a topic in another thread, but further development of all my cars problems, it seemed better to start a new thread, here we have it :

Car water pump getting old (car at 126kk, pump changed at 41kk), changed and replaced with new (by a pro). 6 000km later, car constantly breaks down, sudden loss of power, cant wont start.

First pro with obd2 reader says its thermostat. Not thermostat.
Second pro with obd2 says its air throttle housing, not air throttle housing.

Coolant fan seemed on all the time and at 100%. Changed sensor myself, car then ran for 3 weeks with engine light on, and very poor cold performance. Warm performance was brilliant, but the fan was working as intended.

Car suddenly breaks down again, not wanting to start at all. Air throttle flapping every time i start ignition. Very rarely the car would start with engine light on, and poor cold performance yet again. Fan was working as intended and not blasting as soon as ignition was in.
Wierd enough, but when i turned the ignition on, very rarely the MAP sensor would make a loud humming sound, thats when i knew the car would start.

Now after 1 month of the car being idle, the coolant fan blasts on 100% on cold, car wont start and fan wont stop even though the thermostat, pump and sensors have been changed.
Car has also gone into eco mode, battery is fine and charged.
My own Obd2 reader i have is not connecting to the car, dont know why, maybe eco mode, or it cant ping the VAN, not sure. It has worked previously in a different dealership.

Car is now stuck at home, dont have enough money to toe it to a dealership, cant get a new car either, and cant find a laptop that can handle a lexia tool or diagbox.

Anybody have any help they can provide?
Im going crazy over this, driving me nuts, every time i try something, something else appears...

Hello

Please only post one question per topic.

You have engine questions related to it turning over and not starting, which is a petrol engine fault.

The fan blower on full power is a well know problem and has a solution but that is a question of its own in the section not dedicated to the fuel the Citroen C3 engine runs on.

Eco mode is Citroen C3 Eco Mode it explains what it is and how to get out of it.

The lexia laptop compatibility problem also has it's own section and should be posted it the lexia/diagbox area because that is where those questions get answered (there is also a solution for that).

Thank you for pointing me in the right direction.

Im sorry to bother Arfur, but regarding the coolant fan constantly on IS a petrol model related issue, because the wiring on a petrol is different from other models. I am virtually positive that the coolant fan always on is due to the ECU which is stopping the car from starting, but the ECU is NOT stating any errors, apart from thermostat which is NOT the problem.

Ive checked other topics to no avail, where the only recommandation was to sell the car...
I was just hoping somebody could at least point out the area where my problem is. I just describe all and any car symptoms as they come, but the ECU is telling the coolant fan to go 100% as soon as current passes through the ECU (Fan Relay works fine). I need to know what can tell an ECU to run the coolant fan at max power to solve this issue, apart from a coolant sensor.