98 d1
New coil pack
New good testing battery and alternator
When I got the car I was told the battery would drain over a few days and it started draining over night. I pulled the green door locking box and it went back to draining every 3 or 4 days. My fuel gauge doesn't work and I only have .5v at the harness when it should be 5v so I've been going and cleaning the grounds only to find there are no engine to body grounds.

Any other ideas to look at while I go through this process with the grounds?

 

Maybe use an ammeter function to measure the amps draw. Then pull fuses (amps go to near zero) to see which fuse (or fuses) have the highest draw. Focus on that circuit to eliminate any load that should not be there (a relay, light, or OBD device for example). Or just leave that fuse out until you want to drive again.

The problem could be some PO modification. My '96 can go well over a month without draining the battery. Dirty ground connections do not cause the battery to drain, unless the battery is not getting fully charged.

 

the radio wiring is also an absolute nightmare, im going to have to try them interference thing you mentioned on the other thread

 

I've narrowed it to the windowlift/cdl/rear blower circuit

 

That’s good troubleshooting. Good job.

 

thanks, after removing literally every fuse from the interior panel and not eliminating the drain, it has to be somewhere between the engine bay fuse block and the interior fuse block

 

So maybe the insulation got rubbed off passing through the fire wall, creating a partial short circuit?

 

perhaps, i don't have a garage and it's been rainy so i havent had time to look into it