Hoping one of you boffins on here can help me with a few problems Im having with the megane II 1.5 DCi which I bought 2 months ago for the missus as im pulling my hair out day by day!
Ok basically, got the car from manchester, test drove it around message on dash said "card battery low' or something like, and dealer said was just the key card battery. Ok no worries, car drove spot on except for that light and "service" in yellow. Was told service light means it needed a service, pretty straight forward no problem.
Anyway, picked the car up few days later as it needed an MOT and taxing. Started fine, driving down the road... BEEEEEEEEEP "Check injection" on the dash. Pulled into a fuel station, filled up and carried on driving as no loss of power or anything unusual other than the message displayed on the dashboard.
Got home, searched internet for "check injection" etc and found many people saying it was the glow plugs. Ordered new ones from net etc. Done a voltage check and found out that one glowplug was totally dead other 3 were fine. Tried to remove the broken plug to find out the nut had seperated from the glow plug shaft so just span around. Tried a few things to get it out but nothing, eventually glow plug snapped in the head. So its now sitting with a broken plug.
Next morning, got in, tried starting and struggled to start. Took 8 attempts to start with a HUGE white clouds coming from the exhaust. Drives fine when started until I get on the motorway and put foot down which is when I get a "beeeeep" injection fault and red stop message which disappears after 5 seconds.
This is now the normal routine from day to day except it takes around 20 starts now its cold and has drained my battery twice.
Ive had the car 2 months and already im beginning to think I should have taken friends advice and stay away from renaults.
Ive searched high and low for answers which it could be but im on a tight budget (which is why I got this car as I thought it might help with money) and replacing injectors is a costly business and is NOT an option atm... especially when ive been reading that it didnt fix the problem for a lot of people.
This is what Ive done so far.....
Took the whole fuse box section out of the engine bay, checked all fuses... everything seems fine.
Purchased a used GLOW PLUG RELAY from ebay, as my old one was unplugged for some reason and was feeding a constant 12v to the plugs when I plugged it in.
The new relay is now showing constant 6v to the plugs which I think may be at fault too. With the newest relay plugged in, I get "STOP & Injection Fault" and car will not even attempt to start with immobiliser light stuck on. Turns over when the relay is unplugged and immobiliser light goes out but gives "SERVICE & Check Injection instead.
Ive checked the plug that goes into the glow plug relay, constant voltage at pin 3, 12v at pin 7 or 8 (cant remember off top of my head) with ignition on, pretty sure both pins 7&8 should have 12v not just one?
Ive purchased a new genuine fuel filter as there is air in the fuel lines (which will be fitted wednesday) have been hand priming since purchasing the car but still no joy.
There seems to be a different injector in number 1 cylinder, Has a purple band, other 3 have green bands?
Ive cleaned the EGR Valve, and the TDC sensor, No help at all....
Ive noticed the ECU has been opened for some reason and sealed with silicone.... Could this be the actual problem?
I hope a renault guru can help me out here!
Sorry for the long essay but trying to give you guys as much info as possible.
In the RAF and need this car to get home on weekends to see the other half (im quite mechanically skilled just have no idea about renault electronics)
Please please help, Thanks Liam.