No power, lots of smoke code p1247 neddle lift sensor

posible clock spring under the steerin wheel

It sounds like the crankshaft position is bad

P1247 Needle Lift Sensor Circ. Open/Short to B+

The needle lift sensor is part of injector #3. Check for damaged wiring or corroded wiring harness connector leading to that injector.

I’m happy to help further over the phone at https://www.6ya.com/expert/jason_00b31cc8f593773a

They have to do with the speed sensor and gear ratio on the vehicle. I wasn't sure what engine you had so I went with the 2.0 lter. The P0722 can cause the other code (P0730). In most cases it's wiring at the plug the sensor itself. Below I gave you the testing procedures up to testing the sensor. You will need a ohm meter to be able to do it. Remember this is for the 2.0 liter engine. If you have a different engine feel free to email me at [email protected] with your information including the codes as I will never remember. There are further tests if the sensor tests good but you will need more diagrams and such (wiring mostly). Hope this helps....

Check & replace all four glow plugs of the engine! See also if the glow plugs relay and power supply wires are in good condition. Good Luck!

the sensor should be located behind the front bumper grill.look through the bumper grill and you should see the ambient temp sender.on the dash,does the display where the temperature used to read have 3 dash lines?if so there is an open circuit in the wiring to the sensor.this will cause the aircon not to work..good luck.

IPS Idle position sensor. or IAV needs cleaned Idle Air valve.Spark plugs usually have alot to do with the power of an engine.. Check plugs an wires//

There is no DTC codes for VW 638, your going to need to get the right code There is a P1638 and that is Data Bus Power train missing message from clutch control. which means there is not communication from the TCM to the clutch control. (there is no signal from the Sensor to the ECM) replace sensor and check the wire harness. Good luck and hope this helps. 

when my 02 jetta did this, i had to replace the mass air flow sensor. hope this helps