91 405Mi16x4 Rear wheel drive conversion north south engine

By diyauto
( 3 )

6 minute(s) of a 241 minute read

2-16-2017

Today i continue with the wiring and manage to wire the gauges and a few accessories, i need to find the diagram from my security system to find the siren wire, and couple of sensors on the exhaust, make an adapter for oil pressure sensor, and to wire up the second fuel pump and diff temp sensor, more to come.




2-17-2017

Today i started by making an adapter coupler for the oil pressure sensor, started with a 24mm hex, first drilled an 6mm hole thru, then i turn down and threaded for M16x1,5 the i installed it on the engine to mark where to place the sensor hole then i use the lathe to drill and tap for both sensors, it was very tight to tighten the adapter and sensors, then i got underneath the car to install the exhaust and wasn't able to fully install it, in the process of welding it moved, and had to cut it, and will weld it together in place, and a new problem seem to come up, the brakes seem to go to the floor, feels like air in the lines, not sure how air can get in a sealed system, has anyone had similar experience?











2-19-2017

Today i've put in a full day of work on this project, started by cutting and welding one more piece to connecting the exhaust, then i install the two oxygen sensors and temp sensor, after connecting the electrical for the oxygen sensor for the ECU i started fitting the front end, light, grill, bumper, horn, then i run the engine and found couple of problems, the first is that alternator is not charging, then the LPG is not working, when switching to lpg engine dies, one of the AN6 fuel fittings seems to be leaking and most annoying the Tachometer is not working, i'm suspecting bad connection in the plug located near the air box, but i need to find a wiring diagram to know which wire i'm looking for, also he hood seems to warp a little, not sure why or how, it was properly stored and the engine actually fits underneath, thats a good thing, i hated to have to lose the smoth lines of the stock look, more to come.







2-21-2017

Last two days i've put in many hours finishing all the little things and was able to put the wheels on and lowed on the ground, the rear suspension won't go up, the pump i running and the reservoir is full of fluid, only thing i can thing of the dump valve stuck open, i've never had problems with the hydraulics, so i need to learn how they work in order to fix it, i did manage to drive it forward and backwards in the garage, and the clutch feels nice, and bleeding the brakes fix them now they work, also the Tachometer is not working and is not charging, i check my wiring, the alternator was tested before installing it, any ideas what could cause a no charge situation, is a two wire alternator, i tried connecting the sens wire directly to the battery positive ?


2-22-2017

Quick little update, one problem down, three to go, the Tachometer is now working, after measuring every wire for it turn out fuse number 5 was burned, new fuse and is working, now only the rear suspension, charging system and the LPG system to go and is ready for its firs test drive, did drive it backwards and forward in the garage, clutch feels good, definitely feels like a sport disc, is smooth and grabby, did try high start, and left two small tire marks so the torsen diff is locking, and the new bosch 0 280 155 712 injectors seem to keep the air fuel ratios spot on, of course i haven't put any load on it.






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