After my engine was rebuilt, Ive been having electrical problems. Took my car to a shop to have it fixed, yet they said things were weird, and they could not find the problem. wierd things kept getting burned up or they stopped working, such as fusable links, sterio, efan, lights weirding out and a few other things. Yesterday I was driving my car when I smelled smoke. I stopped the car to look and see that it was coming from my Microtech. Looks as though it didnt do too much damage, but only burnt about a 1/2in of the wiring. The whole day was spent rewiring the Microtech and tracing down any wires that could be grounding anywhere. I also think we basically burnt out the sensor by the water pump. At least thats what the Microtech tells us.

So my question is...through this search we discovered that my motor was not grounded anywhere on the chassis. Would not grounding the chassis cause so many problems? We have disconnected almost everything.

 

I think it could be causing a few of the problems you have been having. It sounds to me you are getting surges of electricity, and they may be what is causing thinks to pop or burn up. There are lots of devices and switches on your engine that are grounded by being screwed into the engine or the accessories. So if you only have one ground from the chasis to the engine and its 25 years old, it could definately be causing you so headaches. It seems that fuel injected cars like to have extra ground wires ran everywhere. In fact they sell aftermarket kits that do just that. Since you converted from carb to f.i. it definately wouldn't hurt to run some extra ground wires. I ran three extra ground wires when i did my swap. Important to run one from the engine block to the frame the thicker the better. Also one from the tranny to the frame and finally tranny to the engine. I would start with that its easy to do. Some people also run a ground from the alt casing. to the engine block.
Do you have a inline fuse on the power supply wire to your Micro tec ? If not definately put one in today. Reference the manual for the amperage.

I would also triple check the alternator. If you are using a newer style alt that is internally regulated. Then do not run it through the voltage regulator mounted on the inside of the fender. I think that could be giving you grief as well. What kind of voltage is the alternator putting out.? should hit between 14.4- 14.8.
If you still lived on Federal Way. I could definately give you a hand.
BTW my wife and I were in Spokane last weekend and ran Bloomsday.
Good Luck

 

Those are all good ideas.

I agree, the grounds could be causing problems. Bad grounds will cause things to cut in and out at random.

But it also sounds like some components are getting too much voltage which is why you smell and see smoke. Look back into the votage regulator and make sure that stays at 14 volts or so.

Also make sure that nothing is shorting and all electrical connections are insulated.