So....this may be a bit wordy but really hoping someone here is a magician...
Just picked up a Fabia 1.9tdi, 2007 for the missus. Test drive absolutely fine, drove approx 100 miles and no probs then I get a call, the car had broke down. Recovery came, brought it home and as soon as we got it off the truck, it fires up and drives like a scolded cat.
Next day, drive to work early and its fine, get in to come home and she drives half a mile and the coil light flashes, the accelerator is dead and she's on meltdown (the missus) Recovery called, they get there and car starts fine! So she drives home no issues.
Next day....drives to shops, dies again so it goes to the garage. They pop it on the machine and says throttle body sensor so they replace it. Drives fine until home then fails again, same issue.
I have a Bluetooth and streetwise obd2 reader and neither show faults.
I have changed the brake pedal sensor after reading something on a forum and still doesn't go.
It has gone from a intermittent fault to continous now. I have had a bit of a root around and I've figured out it's had a new ECU (the one on it has fabia mk 2 in green pen on the back, I'm sure that's not factory spec). The accelerator pedal says polo on it, again not factory spec so obviously the ******* that sold us it had issues before.
It's methodus operandus now is I turn it on, works fine on tick over, try to drive and the revs go OK for seconds, then all over, the no response and the engine goes to just above idle, which must be safe mode.
So my pondery is this, do I a) take it back to the garage b)scrap it and take a loss of about 900 or c) pray. I've had fabias before, we have had the 1.9 pd in other cars and they have been great, which is why we went for this but I don't want to be throwing money in a pit.
Had an mot in April, no issues. Serviced it just after purchase and when we got it, it went brill so I know the engine is strong.
Any pointers much appreciated!