- Aug 30, 2019
Looking for some major help with my z3. I am unable to get the car started after swapping an s52 into the chassis as well as a manual swap. The car was a 1.9 auto before. I have gotten a new ecu, ews, key chip, and ews antenna for the ignition cylinder all matching wired up in the car. The car had an aftermarket alarm system that I have 100% removed as well as reconnected the wires under the steering column that they spliced into. The neutral safety switch has been pinned together with a wire at the shifter (green and blue and black and brown). I have tried 3 ecu’s total, 1 being the original ecu to the s52, one being an ecu tuned by rk tunes to delete all the ews system, and misc other tuning items, and I have the ecu that I purchased that is mentioned above. The car was able to crank way back when before I messed with any of the alarm system or ews functions. Now the car won’t even crank. I am at a loss and do not know what to do. I’ve had this car since November of 17 and I have seen it behind 4 tow trucks from shop to shop (my “shop”). Does anyone know what the problem could be? I am almost ready to buy a stand-alone, but that I feel wouldn’t solve the issue mainly because I cannot find anyone selling a stand-alone for the s52 only the s/m50 so I would need the obd1 harness and whatever other sensors required as well (already have the m50 intake mani). Anything will help, the main problem I was having when the car was cranking is the fuel pump wouldn’t turn on or wouldn’t be receiving a signal to turn on, we pulled it out and put power to it and it does function. Seriously at a loss here. Please anyone help!