M42 won't start

[KenC]

So after work I went to start up the car and it just kept cranking.

-Fuel pump IS working (should as it's fairly new from the dealer).
-All fuses are intact.
-Coils have <10k miles on them.

Any ideas? I'm hoping to replace the Crankshaft Postion Sensor this evening.

[FL318is]

ICV or TPS or try M42club.com

[KenC]

ICV is fairly new from the dealer

I'll check the TPS too

[Jordan]

OHM out the CPS.

ICV isn't going to prevent a start, nor will the TPS.

[restoration]

my old 318i left me stranded and i found out that it was the ECU(brain) it was not programing engine to inject fuel, and those coil should not be a problem, check for spark and the usual trouleshooting

[FredK]

Was it working fine before, or are you trying to start a car that you've never seen running?

[restoration]

Was it working fine before, or are you trying to start a car that you've never seen running?

At the breakfast his car was running quite well

[Hick]

Does it even try to start [sputter, hickup]?

[KenC]

I'll try and swap ECUs too.

Yes, the car ran perfectly that morning.

[KenC]

Does it even try to start [sputter, hickup]?

No, just cranks and cranks.

[KenC]

OHM out the CPS.

It's going to be dark and cold. I'm just going to swap it.

ICV isn't going to prevent a start, nor will the TPS.

Yeah, i didn't figure either of them would prevent it from actually starting up.


What about the cold start valve? Do M42s have them? Or would a faulty one just prevent it from starting up right away?

[Van Westervelt]

getting fuel to the engine? recently put a chip in it?

[Hick]

One thing ive heard people complain about had been the crank ref sensor. ive never had an issue with it before [my m42 hasnt acted up in 50k and 4.5 years]

Its on the drivers side [i think] one lead going in, looks like a little black barrel. It could be gunked up, loose, or broken.

[KenC]

getting fuel to the engine? recently put a chip in it?

The fuel pump is working, I can only assume that it's getting fuel.

Haven't touched the ECU at all.

[Hick]

Fuel pump working doesnt mean its getting fuel. if the injectors are not firing, which would be a fuel management issue [sensors, ecu, etc.] then there is no fuel being delivered into the cylinder.