Help diagnosing startup failure

[Adrian_Visser]

A non Vanos m50 needs a 405, 402 or 403 DME. So much mis-information ITT. OP what the fuck are you thinking using an m20 DME on a 24v engine?

I am surprised that the x6000 even plugs into the DME TBH.

[SwiftE30]

A non Vanos m50 needs a 406 or 403 DME. So much mis-information ITT.

I am surprised that the x6000 even plugs into the DME TBH.

my bad. I'm not familiar with the non-vanos, sorry. but yeah, i dont even know how ANYTHING worked with this.

[Adrian_Visser]

I was wrong 402. 403, 405 are the DMEs compatible with NV. Edited first post.

[ayemattyyy]

So, I tried it with a 403 DME and it had the same result. What trouble am I looking at?

Matt

[M///BMW]

This thread is full of lols. I have a feeling alot of things are out of place on this car.

[SwiftE30]

This thread is full of lols. I have a feeling alot of things are out of place on this car.

agreed.

[ayemattyyy]

Why do you feel that? I feel I've done a pretty decent job on this car being my first swap. Simple mistakes happen.

On the other hand, any other feedback? Thoughts?

Matt

[M///BMW]

Why do you feel that? I feel I've done a pretty decent job on this car being my first swap. Simple mistakes happen.

On the other hand, any other feedback? Thoughts?

Matt

Using the wrong ECU/DME is not a small issue. That is a HUGE issue. It has been addressed in almost every single 24v swap thread. Good luck with resolving your issue.

[ayemattyyy]

Any ideas?

Matt

[e30shmobberr]

Use wedophones ECM's and verify that every wire is correctly wired. You would need both from the year of the car, and the year of the engine.

[ayemattyyy]

Okay, I tried the CPS since it seemed like a viable problem. I'm running out of ideas and motivation.
Help.

Matt

[yanal]

Honestly at this point I'd be looking for a nearby specialized shop that can help you, good luck.

[shiboujin]

<3 you guys...

How did you test if the fuel injectors were running? Take a flat tip screw driver. A long ass one. Put the flat side against the body of the injector and the handle end on your ear closing your tragus against your head. Have someone turn over the car. If the injector is firing, you'll hear a pronounced "click" every now and then. If only 1 injector is doing this, something isn't connected properly (test all 6). Either power or signal from the ECU.

Next you need to test spark. Cheapest way is to pull a plug, rest the plug into the appropriate coil. Wrap a wire around the threads of the spark plug and ground the other side to the chassis somewhere. You should see the spark in the plug gap. Test all 6. The other option is to get a real spark tester. The body of the spark plug MUST be grounded!

Go to Jegs.com and buy a fuel pressure gauge. Not an electric expensive one, just a simple in line one. It isn't sufficient to just say "it spew fuel" you need to make sure you get 3 bars (~45psi) of fuel. Otherwise, your injectors will literally drool into the cylinders and you'll get absolute dick for combustion.

It's fairly simple, if you get no spark/no injectors firing, things are simply plugged in wrong. If you are getting some things sparking/injecting, it's a wiring issue.

Remember that on the NV harness, theres a bundle of wires that will wind up being near the vert battery tray/ecu area that are for grounds. There is also another smaller bundle that needs to go to the pos terminal on the firewall. Pull back the insulation to see the wire colors. Browns are grounds, reds are hot 12v all the time.

Do all of this and report back. If you don't, I will simply shit on you for posting further.

[SwiftE30]

do all of this and report back. If you don't, i will simply shit on you for posting further.

+1

[joecassie]

Make sure all the connectors are in the right place because that was my problem. I had no fuel nor spark until I put them in the right place.