900 is good to go. Are you telling me the old sensor read 900 or the new one. ? A 3 wire alternator connection implies to me that the rev counter is taken from the alternator. Remove the small plug and crank it, does the rev counter register, I suspect not. I had this on a Range Rover recently.

How much resistance. ? Some have a bleed resister for diagnostic purposes to establish the sensor is connected even if the pick up is open circuit. Regards Peter

Edited by Peter D on 07/02/2011 at 20:07

No probs. So why does she not fire up. ??

Do you have a scope, or try a meter on the 2 volt AC range and measure the output. You nominally get 1 to 2 volts form the sensor when cranking.

Regards Peter

This car uses a variation of the bosch Cr/edc system.The cam sensor is a hall effect device which should have a 5 volt supply to pin 1 of the connector.This gives a square wave output when scoped.The crank sensor is a magnetic impulse device and gives a sine wave output.Hope this makes sense.

Check on the spare flywheel if there is a TDC tooth missing or a magnetic insert, If this is not apparent then may be the cam sensor is more important when we thing. Have you tried the other spare sensor. Rergards Peter

Crank PS usually are not Hall effects so do not have a power feed. Did you try swopping over the cam sensor. Regards Peter

its not Di its a common rail. I dont have a spare cam sensor as it was already gone off the donor engine. Ive had noid lights in the injector plugs and theres nothing. A multimeter shows around 2 volts at the terminals so they do have continuity in the wires etc. Kia will have a brand new genuine crank sensor at lunchtime tomorrow. Fingers crossed that resolves the issue. Failing that its going to a local pump and injector specialist to have the fueling system tested properly.

I cant get the diagnostic to access that when cranking and dont have an oscilloscope to use.

Any Progress. Regards Peter

sorry not been online. The new sensor from Kia was a different number on top and measured 400 ohm where the others measured 900. Put this in and still no injectors but I do get voltage at the injectors now. So I took one injector out and took it for testing. Seized solid. The upshot I think is the injectors need an overhaul so they are definatly capable of injecting then I can make headway. I have now left the vehicle at a different garage who hve specialist equipment to remove the injectors, 2 of them are very much seized in the head.

The 12 volt feed has nothing to do this the sensor the ECU powers the injectors up and control pules are down to ground so the Noid light should have shown this even with seized injectors. Has the car been run on chip shop bio diesel. Regards Peter

after all the battles eith this one, 4 recon injectors and fresh fuel and filter it drove away.

yeah it was a big relief. The first day the injectors went in it would only fire on one cylinder. the diesel specialists tried blaming all sorts instead of the injectors they overhauled. Eventually they agrred to restest the injectors and sure enough 3 had locked up again. guess they were stoiod dry after the rebuild. they sorted them FOC as expected and it fired up.

Think I probably lost a lot of money on that job given the work I had to turn away due to space. Still thats the car game!!