Originally posted by nrubenstein
View Post
Announcement
Collapse
No announcement yet.
Spark+Fuel but no start--S50
Collapse
X
-
Okay, I realized that the main relay I had in there was a four prong not a five prong, alright, stupid me. Now I'm getting power to the red/white wire, but it's constant without the key even in. Meaning that even when the key isn't in, the ICV and everything else is getting power and running...
Comment
-
I tried my new DME's and another used but tested good CPS. Still not firing. Sprayed some fluid in the intake and it runs for a second and dies so I have spark. Tested the injectors with it cranking and they're still not seeing power. Ordering a new crank sensor tomorrow. Should have bought a new one in the first place.91 318is M50 swapped
05 Honda Pilot
24V swap thread
http://www.r3vlimited.com/board/showthread.php?t=302524
Comment
-
Originally posted by Austin! View PostDME grounded properly? You made sure that the thickest green wire on your E36 harness (where you spliced the x20 end to a C101 connector) has a little green wire with it and is getting power?
Comment
-
Originally posted by Steven View PostSo yesterday I was just messing with stuff on it, not doing much, and randomly got fuel and spark. Maybe something was just stuck or something? At any rate it fires for a couple times and then dies. Idk why. Now another shitty problem to figure out
Do you have the BMW factory service wiring manuals printed out?
did you verify the water temp sensor and other plugs under the intake manifold are correct by checking continuity to the DME plug position? if you don't have the wiring printed out and a chart drawn up of WTF you are dealing with it will stay dead a LOOONG time.
- this is usually the #1 cause of no start swap; installer fucked up by putting wrong plug on wrong sensor. been there done that wrote home about it.
the M50 engine only needs crank position sensor, water temp sensor, 6 coil packs and 6 injectors functioning to fire, IAC to idle.
unplug the airflow meter and see if the idle improves; if it does you likely have a dead AFM or vacuum leak between the AFM and IAC.
realistically if the engine harness has power and ground connected properly (and no shorting created by installer), the engine will fire and idle with no water, no radiator, no intake boot or airflow meter connected, o2 sensor is not needed for fire and idle either.
Our racing M50 has 2 wires going into the OEM bmw engine harness and the rest all longacre racing inthe body.
only 2 wires are needed for a race car to the engine harness to run; one of them is speed sensor for vanos and the other I forgot;OBD1 M54/M52TU swap as a M50b25
Z4 non powered steering rack fits e30
Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine
Comment
-
^^^ Good post. I for one never knew the temp sensor was vital to starting. Will have to go double check my connections there.91 318is M50 swapped
05 Honda Pilot
24V swap thread
http://www.r3vlimited.com/board/showthread.php?t=302524
Comment
-
Originally posted by Steven View PostYeah I have a big list and diagram of the correct wires with corresponding wire colors... So that should be all good... And it's not actually starting it'll fire for like half a second then go back to just turning over. And that's if I'm lucky..
Spray some brake cleaner or starting fluid inside the intake manifold and see if it will idle.
If everything is working besides fuel supply the engine will idle for 20+ seconds on a spritz of brake cleaner.
Obviously be careful; dont hurt yourself / diaf by od.
Sent from my SAMSUNG-SGH-I337 using TapatalkOBD1 M54/M52TU swap as a M50b25
Z4 non powered steering rack fits e30
Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine
Comment
-
Originally posted by Nick_S View Post^^^ Good post. I for one never knew the temp sensor was vital to starting. Will have to go double check my connections there.
The other 2 wire temp sensor in head is to the dme.
If dme has no water temperature it will be angry; no start is quite possible. A toyota 2jzge with distributor will not fire if the water temp sensor to dme is unplugged
Sent from my SAMSUNG-SGH-I337 using TapatalkOBD1 M54/M52TU swap as a M50b25
Z4 non powered steering rack fits e30
Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine
Comment
-
Originally posted by Wanganstyle View PostIf you claim it fires one really obvious way to see if your claim is bs or not
Spray some brake cleaner or starting fluid inside the intake manifold and see if it will idle.
If everything is working besides fuel supply the engine will idle for 20+ seconds on a spritz of brake cleaner.91 318is M50 swapped
05 Honda Pilot
24V swap thread
http://www.r3vlimited.com/board/showthread.php?t=302524
Comment
Comment