Originally posted by Adrian_Visser
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Well you checking for spark will narrow it down for you so do that.
If you have no spark and no fuel it could be the CPS, or the DME relay or the DME itself.
Is the power wire for the relays connected to the junction block like it should be and do the relays click when you turn the key to the run pos.?
If you have spark but no fuel I would lean towards the fuel pump relay or the fuel pump itself. Test each one, you can bypass the fuel pump relay to see if the pump will run.
First of all mount the DME properly. I managed to get mine to sit on the original mounts by just using a larger washer, i.e. a fender washer on one of the bolts and clamping it down. Although the DME has a harness ground it seems that sometimes that isn't enough.
Using the wiring diagrams on wedophones.com and the e36 bentley manual found here:
You should be able to find the problem yourself. Don't expect people on the interwebz to do all the thinking for you they aren't in your garage looking at your car like you are and cannot test things out.
Check some things and do some tests before you run to others for help...
Edit: the fuel pump should run only when the DME senses that the engine is turning over via the CPS.
If you have no spark and no fuel it could be the CPS, or the DME relay or the DME itself.
Is the power wire for the relays connected to the junction block like it should be and do the relays click when you turn the key to the run pos.?
If you have spark but no fuel I would lean towards the fuel pump relay or the fuel pump itself. Test each one, you can bypass the fuel pump relay to see if the pump will run.
First of all mount the DME properly. I managed to get mine to sit on the original mounts by just using a larger washer, i.e. a fender washer on one of the bolts and clamping it down. Although the DME has a harness ground it seems that sometimes that isn't enough.
Using the wiring diagrams on wedophones.com and the e36 bentley manual found here:
You should be able to find the problem yourself. Don't expect people on the interwebz to do all the thinking for you they aren't in your garage looking at your car like you are and cannot test things out.
Check some things and do some tests before you run to others for help...
Edit: the fuel pump should run only when the DME senses that the engine is turning over via the CPS.
The power wires for the relays are connected properly and the relays click when the key is turned.
The DME is already mounted properly in the DME bracket, where the old M42 DME use to be.
One more thing... are these two plugs for the auto trans? I thought I removed all the auto stuff from the harness, It's comes from the harness and goes to the driver's side....They're pretty long so I'm assuming they are for the auto trans. Here's a pic....
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