Hello, I am a repairman for agricultural and construction machinery. I don't have much experience with cars, but the engine on my Polo 1.4TDI 2007 BMS was damaged and I replaced it with an AMF. I made a hole for the crankshaft sensor to place it like on the old engine so that it would read the same sensor. I replaced my computer and the gear along with the reader and the camshaft sensor from the old engine. I blocked the ribbed belt as if replacing the first piston and installed a new magnetic reader and a seal with a blocker for the crankshaft behind the flywheel. But the car showed error p0726 and runs at 1200 rpm, it doesn't go more than 3400 rpm, it doesn't increase the rpm when I start it until the heater starts flashing. I am stuck with this problem. If anyone can advise me what I could do, I would be very grateful.
Added after 2 [minutes]:
mistake, I didn't replace the computer, I just put all the sensors that were on the old engine back in.
Added after 2 [minutes]:
mistake, I didn't replace the computer, I just put all the sensors that were on the old engine back in.