Obate2

Hi, yes it was a direct match. So diagnostics has been back out today, confirmed cam and crank signal. He plugged in obd reader and could not get a vin out of the ecu, which led him to can bus faults. Resistance check across can bus with nothing coming back, so there’s my problem. Thank you for all your comments

Yes , the light comes on with ignition and goes out soon after . That is a good point , and I’ll have to research about software issues / corrupt data.

Hi thanks for replying again, it’s had a new ecu copied from the old one with data and still no difference

Hi thanks for replying, unfortunately I don’t think this would make a difference, as when reading OBD channels when cranking, the ecu is simply not outputting any injector pulses and has 0 ignition angle, ie no spark. I’m really not sure where to go from here, even our diagnostics man is stumped. Oscilloscope has been out and crank signal is present.

Thanks for replying and sorry for the late reply. All fuses have been checked , we’ve had a new ecu. A mobile diagnostics has been out and diagnosed as the crank sensor, however we have rpm reading on dash and this goes away when sensor is unplugged, also replaced sensor twice and replaced cam sensor. All sensors have 5v trace and ground. Still no spark or fuel at all when cranking. Any ideas are appreciated , thank you !!

Hi all, Yesterday I did a compression test on my 1.4 16v engine, as i am suffering from some power loss and wanted to rule the cylinders and pistons out. To do this test, it was suggested that i should unplug the injectors, which i did, and I removed the coil packs and spark plugs. I completely removed the coil packs and unplugged all 4. However, once reassembled and double checking everything was plugged in, my engine will crank but there appears to be no spark at all on any cylinder. We've checked for spark on all 4 plugs by holding against the block and cranking. We've checked for a 12v to each coil pack, and each of them receives 12v, but will not spark no matter what. My car uses a Magnetti Marelli 4TV ECU, which apparently has common faults relating to ignition and i've read about problems with signal to ignition coils. Does anyone have any suggestions or experience with this? Thanks all