No start after track day.

[jrdeamicis]

No way is that thing going to fire on 11V.

Get it more in the 12+ range.

[dude8383]

No way is that thing going to fire on 11V.

Get it more in the 12+ range.

Tried this with a fresh battery too :(

I'm going to order a new crank sensor and will but the battery on a tender so that it'll be fresh when I come back to install it.

[jrdeamicis]

Tried this with a fresh battery too :(

I'm going to order a new crank sensor and will but the battery on a tender so that it'll be fresh when I come back to install it.

You can meter the Crank sensor very easily from the X6000 connector with a DMM. You are looking for the 550 Ohm or 1200 ohm range depending on the year / make.

wedophones.com ---> manuals --> Automotive ---> BMW --->

[dude8383]

You can meter the Crank sensor very easily from the X6000 connector with a DMM. You are looking for the 550 Ohm or 1200 ohm range depending on the year / make.

wedophones.com ---> manuals --> Automotive ---> BMW --->

Yup, I've got the manual for reference but it states that I should be looking for 1280 ohms +/- 10%...the sensor was giving me NOTHING.

[StereoInstaller1]

Have you replaced the main relay yet?

Everything you are describing sounds more and more like the main relay.

[dude8383]

Have you replaced the main relay yet?

Everything you are describing sounds more and more like the main relay.

Checked all the relay's actually...all of them are 100% functional. ECU is good too, sends proper signal to main relay and then from there to fuel relay. Everything checks out.

[StereoInstaller1]

How did you "Test" the relay?

Exactly what wires had voltage on the main relay?

[dude8383]

How did you "Test" the relay?

Exactly what wires had voltage on the main relay?

I'm going to have to get back to you because my friend, an electrical engineer read the wiring diagrams and was able to hook them up to my batter booster to verify if they worked. I heard each relay click.

I will have to go back to the car and tell you one by one which relay had the voltage, I can't remember of the top of my head.

[StereoInstaller1]

I'm going to have to get back to you because my friend, an electrical engineer read the wiring diagrams and was able to hook them up to my batter booster to verify if they worked. I heard each relay click.

I will have to go back to the car and tell you one by one which relay had the voltage, I can't remember of the top of my head.

Well, I hear ya on that.

The main relay is an oddity, tell your buddy it is an STDP relay, so ther are 2 87's and no 87a.

Half of that relay runs the DME, the other half runs the fuel system, in addition to other stuff (tach, etc through DME as example)

The whole reason I think main relay is those same basic symptoms have been the main relay so many times.

"Runs fine but sputters and dies after like 15 min, now it won't start at all" is the basics as I get them.

[dude8383]

Well, I hear ya on that.

The main relay is an oddity, tell your buddy it is an STDP relay, so ther are 2 87's and no 87a.

Half of that relay runs the DME, the other half runs the fuel system, in addition to other stuff (tach, etc through DME as example)

The whole reason I think main relay is those same basic symptoms have been the main relay so many times.

"Runs fine but sputters and dies after like 15 min, now it won't start at all" is the basics as I get them.

I shall forward this info to my friend and see what he says.

For the record the car no longer starts period. That night on Wednesday was the last time the car ran...

[StereoInstaller1]

You can make a jumper from the "30" terminal to both "87" terminals and test.

The car should run, but will not shut off until you remove the jumpers.

[Danny]

Did you ever change the CPS?

[dude8383]

Did you ever change the CPS?

I ordered it mang. Should be here by Wednesday.

P.S.

My friend is trying to register so that he can reply but didn't receive the activation email, see what you can do, Mr. Newly Appointed moderator ;)

User: pacemkr

[dude8383]

Gentleman, thank you all for help...Black Betty is ALIVE!!!!!

Installed crank position sensor earlier this evening and she started up without a problem!

[Danny]

Glad to hear it!