s54 swap to ms42 car, NO START

[332]

So I'm finishing up my s54b32 swap into a 323i (ms42) I have no codes, no engine lights, I have deleted the ews, I have jumped wires 1 and 3 from the x1659 connector, just cranks no start. Checking the fuel pressure tomorrow, if anyone has some other ideas please feel free to leave them! Thanks

[liam821]

Hrm, I'd check spark and fuel first and go from there. Spark should be as easy as pulling a coil and checking for spark when you crank.

[332]

Hrm, I'd check spark and fuel first and go from there. Spark should be as easy as pulling a coil and checking for spark when you crank.

Ya buddy, we close on this. I'm gonna snag some starter fluid also and see if she will start!

[332]

Fuel pressure is good, via the port on the FPR.

[nextelbuddy]

what all did you replace with your swap? i have heard of this happening with someone that did an S54 swap and they did NOT replace the DME cage/transmission/o2 harness setup and tried to keep it in place. basically did you swap in ALL S54 engine harness stuff? are you sure you have your wiring right? how did you do your fuel pump wiring?

S54 DME uses an EKP relay setup and is pinned that way.

MS42 has Fuel pump on PIN 10 x60004 but the MSS54 DME also uses a Euro fuel pump on pin 10 x60004 so the fuel pump should just work but eventually the DME would need the DTC for EKP relay coded out but that along would not cause a no start condition.

did you check your CRANK position sensor? check the wiring for it and inspect the sensor. I once had a swap we were doing and the crank pos sensor looked OK yet it wasnt working. when i pulled back the rubber boot, the wires were complete damaged and pulled out of the pin slots, i had to swap in a new/used one.

also check your fuel filter connections. I also one time had a no start condition and it was because i had the fuel FEED and Return backwards for the fuel filter.

[332]

what all did you replace with your swap? i have heard of this happening with someone that did an S54 swap and they did NOT replace the DME cage/transmission/o2 harness setup and tried to keep it in place. basically did you swap in ALL S54 engine harness stuff? are you sure you have your wiring right? how did you do your fuel pump wiring?

S54 DME uses an EKP relay setup and is pinned that way.

MS42 has Fuel pump on PIN 10 x60004 but the MSS54 DME also uses a Euro fuel pump on pin 10 x60004 so the fuel pump should just work but eventually the DME would need the DTC for EKP relay coded out but that along would not cause a no start condition.

did you check your CRANK position sensor? check the wiring for it and inspect the sensor. I once had a swap we were doing and the crank pos sensor looked OK yet it wasnt working. when i pulled back the rubber boot, the wires were complete damaged and pulled out of the pin slots, i had to swap in a new/used one.

also check your fuel filter connections. I also one time had a no start condition and it was because i had the fuel FEED and Return backwards for the fuel filter.

All good points, little background. Not sure what you mean about the cage/transmission/02 harness. I swapped that over, the entire harness that has the reverse light, egt, etc. Yes, I swapped over the entire engine harness, from the s54 I'm sure I have all the wiring correct. I didn't touch the wiring on the fuel pump, the pump is working and i have 71 psi at the valve on the FPR. I am aware of the pins on x60004, the pump primes. I have not checked the CPS or the wiring associated with it. While I was under the car today checking the fuel psi. I double, triple checked to make sure I have the fuel lines correct. I do... so things left to check. Spark, CPS situation, will report back after the garage airs out a bit. TY

[332]

CPS is good, also zero codes.

[332]

plugs are wet, no spark...

[nextelbuddy]

when you say you "deleted EWS" do you mean you deleted EWS in the software in the S54 DME as well as removing the module box under the dash and jumping the wires?

how did you perform the EWS delete in the DME?

I too have had instances where i swear i checked the box for EWS delete in the ECUWorx binary tool but when i saved, the setting didnt get saved. I then saw through trial and error that as i was going through the motions of checking boxes.. i would check mark the ews delete but then as i marked other boxes below it... some UI interface issue with the program was causing the EWS to get UNchecked when i check marked other options. (i think the developer has the check box options in his design interface slightly too close to each other or possibly slight overlaps causing that.) so you have to make sure you precisely check all your options including EWS and make sure its still check marked when you save.



i would do another READ of your DME and then open that TUNE file you read to make sure EWS is still marked to be deleted.

the issue you are describing of crank but no start and your fuel is priming etc.. strongly suggests that the EWS is not deleted in the DME hence not getting any spark.

[332]

when you say you "deleted EWS" do you mean you deleted EWS in the software in the S54 DME as well as removing the module box under the dash and jumping the wires?

how did you perform the EWS delete in the DME?

I too have had instances where i swear i checked the box for EWS delete in the ECUWorx binary tool but when i saved, the setting didnt get saved. I then saw through trial and error that as i was going through the motions of checking boxes.. i would check mark the ews delete but then as i marked other boxes below it... some UI interface issue with the program was causing the EWS to get UNchecked when i check marked other options. (i think the developer has the check box options in his design interface slightly too close to each other or possibly slight overlaps causing that.) so you have to make sure you precisely check all your options including EWS and make sure its still check marked when you save.



i would do another READ of your DME and then open that TUNE file you read to make sure EWS is still marked to be deleted.

the issue you are describing of crank but no start and your fuel is priming etc.. strongly suggests that the EWS is not deleted in the DME hence not getting any spark.

I deleted the EWS using the ECUworx Binary Tool, The module box is still under the dash, I have pins 1 and 3 jumped. I will go over these steps again, ty!

[332]

It lives... had a few things going against me. 1: I forgot to plug in the obd cap under the hood, Idk if that mattered. 2: Bad/old fuel while checking the fuel pressure/lines a lot of nasty discolored fuel came out. (this car hasn't ran in about 5 years) 3: I had the EWS x1859 plugged in, that is wrong. Leave it unplugged. 4: I plugged in the LCM this time... again can't confirm if this effected anything! stay thirsty friends!

[nextelbuddy]

It lives... had a few things going against me. 1: I forgot to plug in the obd cap under the hood, Idk if that mattered. 2: Bad/old fuel while checking the fuel pressure/lines a lot of nasty discolored fuel came out. (this car hasn't ran in about 5 years) 3: I had the EWS x1859 plugged in, that is wrong. Leave it unplugged. 4: I plugged in the LCM this time... again can't confirm if this effected anything! stay thirsty friends!

You're the only person i know that has to unplug your actual EWS module and jump the pins to get the car started. i've done several MS42/S54 swaps with out that issue

to me when i see something like that it screams:

- bad/faulty EWS module
- Key is not original or has bad battery in the keyfob
- Keyfob circuit board is damaged water damaged
- EWS Transponder Keyring antenna in the ignition tumbler is bad/faulty

the thing with EWS is even if you delete the EWS in teh ECU.. that just means the ECU can be used in ANY car not just its original car however if you have an issue with your EWS on the Chassis side such as bad ews module, bad keyring, bad transponder, bad circuit board in keyfob, then your car will not start either.

glad you got it sorted out and know the engine starts however if you actually care about the EWS from a key perspective (currently anyone can steal your car now by breaking your ignition tumbler since the EWS module is bypassed) then i would investigate the other EWS chassis related components.

[332]

You're the only person i know that has to unplug your actual EWS module and jump the pins to get the car started. i've done several MS42/S54 swaps with out that issue

to me when i see something like that it screams:

- bad/faulty EWS module
- Key is not original or has bad battery in the keyfob
- Keyfob circuit board is damaged water damaged
- EWS Transponder Keyring antenna in the ignition tumbler is bad/faulty

the thing with EWS is even if you delete the EWS in teh ECU.. that just means the ECU can be used in ANY car not just its original car however if you have an issue with your EWS on the Chassis side such as bad ews module, bad keyring, bad transponder, bad circuit board in keyfob, then your car will not start either.

glad you got it sorted out and know the engine starts however if you actually care about the EWS from a key perspective (currently anyone can steal your car now by breaking your ignition tumbler since the EWS module is bypassed) then i would investigate the other EWS chassis related components.

I'd make a killing on the insurance.. I couldn't be so lucky! I'll try to troubleshoot things a bit further.. I really think it was bad/old gas!

[332]

when you say you "deleted EWS" do you mean you deleted EWS in the software in the S54 DME as well as removing the module box under the dash and jumping the wires?

how did you perform the EWS delete in the DME?

I too have had instances where i swear i checked the box for EWS delete in the ECUWorx binary tool but when i saved, the setting didnt get saved. I then saw through trial and error that as i was going through the motions of checking boxes.. i would check mark the ews delete but then as i marked other boxes below it... some UI interface issue with the program was causing the EWS to get UNchecked when i check marked other options. (i think the developer has the check box options in his design interface slightly too close to each other or possibly slight overlaps causing that.) so you have to make sure you precisely check all your options including EWS and make sure its still check marked when you save.



i would do another READ of your DME and then open that TUNE file you read to make sure EWS is still marked to be deleted.

the issue you are describing of crank but no start and your fuel is priming etc.. strongly suggests that the EWS is not deleted in the DME hence not getting any spark.

I wanted to make an update on this, I put everything back into connector x1659, plugged it into the ews. The car fired right up, I think the no start issue I was having was due to bad gas. That is the final conclusion, everything you had stated here has turned out to be true and accurate. Thank you

[nextelbuddy]

great to hear! go enjoy it now