I have an ‘83 245 B23F Jetronic II . It always started easily and ran strong. A few yrs ago I was having problems w ignition switch so I pulled the blue wire out of the sw and extended it so I just have to touch it to any hot fuse terminal when I want to spin the starter motor, plus I ran a hot lead wire (w on/off switch on the dash) to directly activate both fuel pumps. This always worked.
Last spring it didn’t run/died - so I put in a rebuilt Bosch distributor - turned in my sloppy old as a core- new cap and rotor. I cleaned and gapped plugs - they are always pretty clean and light brown/grey - but it still no go. I put new pump and sock filter screen into fuel tank, put in a new fuel filter next to a good working swapped-in main fuel pump, new seals on injectors, and general cleaning of gunk on block and wiring harness etc. Turns out I had been running only on the main fuel pump and then it died. When replaced, car started and ran fine again. That rebuilt distributor has Black, Red, and Green lead wires out to the round 3 pin/3 socket connector on the wiring harness. The gob of sealant where the 3 wires go into the side of distributor was loose, exposing the individual leads outside the distrib, but it worked.
Six weeks ago I hit a pothole and it lost all power - seemed like loss of ignition rather than fuel. I got flatbedded home. I got no HT spark from coil. I put in a new Bosch coil I have 12.7 volts on both #15 terminal and #1 terminal with ignition switched on. But still no HT spark - Ohm readings are OK on new coil. I sent disrib back to supplier they “tested it” sent it back as “OK no problems, no need to rebuild”. They didn’t apply sealant at exposed insulated wires. I did the Ohm and volt meter tests at Jetronic Electronic Control Unit of fuel system parts - all within specs. Good grounds for injector wires on manifold and ground strap to body. When ign is switched on to “run” one of the 3 wires into distrib is hot (seams weak hot). I’m suspecting I don’t have elec from #1 on coil to distrib but I’m not sure. Wiring diagrams are showing two grey wires (or two white w red stripe wires) from #1 to other connections in ign. These 2 grey wires are what I would call coaxial, and at the ign coil each center conductor is crimped to a shared connector to #1 coil terminal. The woven/wrapped outer conductor on each of these is pulled back and then they are twisted/crimped to each other and taped over. These outer conductors are also jacketed/insulated. One of the greys from #1 coil goes to 2 commonly connected wires, white w red stripe -one of these goes to a control unit (it has a vacuum hose and 6 wires) on the rt front wheel well . This grey wire has one bayonet crimp connector inside a plastic jct connector and the copper wire strands were oxidized and crumbly. I can’t tell if the center conductor of grey wire was supposed to be connected at this point or was supposed to be isolated and to dead end there. The specs say #1 terminal voltage should be 2.__ maybe for CIS not Jetronic? And I have 12.7v at #1 same as #15. Is this coaxial cable supposed to be some kind of voltage absorber/modifier? The grey wires also go to the Lambda O2 sensor and to the ECU. There is what I think is a test socket tucked up above the driver’s left knee with 5-7 wires into it, included are two grey “coaxials” with the jacket conductors rolled back and twisted together. Any testing that I can do here?
I have cleaned and brightened all fuse holders and fuse ends. I am checking for other loose, frayed or corroded wires and connectors - cleaning and reconnecting. The timing belt is in place and is turning the camshaft. One TB cover bolt is stuck and I don’t want to snap it, so cover is still on. I will dbl chk #1 cyl to TDC and reinstall distrib w rotor pointing to #1 sp plug wire on cap. The System Relay below glove box clicks and warms up when ign is switched on. The HT spark plug wires are clean and undamaged. HT wire from coil to distrib is same, with sligthly higher than specs Ohm #.
I have put in many hours and I need some good advice. I need to drive this car and get to work! Thanks in advance. Steve