Bmw 530d e60 is cranking only.injectors are working properly.new glow plugs are not heating and the glow plug relay or controller is functional.it there maybe a fuse

SOURCE: BMW E60 530d WILL NOT START WHEN IT IS WARM

pcv valve maybe the issue. does it misfire?

SOURCE: I have 1987 6.9 diesel the wait to start light

Not sure about this engine but some diesels have a relay that looks like a voltge regulator , like the one thats for your starter, and a seperate glow plug controller. Find out if you have 2 seperate components and consider checking both. This what your relay should look like, The 7.3 L has it on top of the engine near the front and between the valve covers. Hold an insulated handled screwdriver to connect both larger studs and keep them connected for 30 sec.s, this jumps the relay. If your glow plugs work after this, then the relay is your problem.

Testimonial: "I jumped the relay as you suggested for 15 seconds with the ignition off, hopped in the truck and it started right up. Thank you for the help."

SOURCE: I am not getting any power to my injectors on Audi

try checking the resistances between the injectors and the head if one is high that will back feed and stop power to the injectors

SOURCE: how to adjust handbrake on bmw 530d e60

raise vehicle and remove 1 wheel stud each side, use a flashlight to see inside.While spinning the wheel you will see a adjuster that loocks like a sprocket,use a long narrow flathead to pru against this part and you will see it turn, turn it untill it locks the wheel and then back it off about three teeth

SOURCE: 1997 Jetta: glow plugs not working. Glow plugs tested good, ne...

Before you invest in a long drawn out Glow Plug replacement etc. A little known issue occurs on the ALH TDI engines. The temperature sensor sending unit. A small blue module that plugs into the coolant hose assembly will cause a P error on the glow plugs that is nothing to do with the glow plugs at all. The part fails and sends a temp error to the engine computer. I tested all the coolant glow plugs, engine glow plugs and glow plug harness and all worked fine. One of the test procedures for the glow plugs is to undo this sensor that will force the glow plugs to come on no matter what temperature. This confirmed my GP system was functional and the sensor was bad. I purchased the part from local VW dealer for $33 US and installed and it is fine. Dependent on your model it can be square or round. The link to this part for your car is http://www.partsgeek.com/catalog/1997/volkswagen/jetta/body_electrical/water_temperature_sender.html

Be sure to have VW Pentosin coolant on hand to refill coolant system as you will lose quite a bit when removing this part. It is located slightly behind the coolant glow plug assembly.. This is the round ones not the ones on the engine block at top.

Be sure that when you replace it you put in a new rubber gasket seal.. its a round rubber seal that should come with your new part. Dont reuse the old one or you will have a leak.

There is a c-clip that holds this in the hole you slide that clip off and wiggle the sensor out. Coolant will run out of the hole, so do this outside. The sensor is easily pulled out. You will need to insert the new part in teh same hole with new rubber gasket and replace c clip. Then plug in wiring harness and you should be good to go.