[Charles]

My temperature gauge started to flutter upwards. Overheating? Well, I was traveling on the highway in near freezing weather with the heater on. But then I also had these other issues:

1) A/C Compressor failed to come on. I turned it on because that cuts on the extra fan.
2) Radio speakers cutting in and out.
3) Check Engine codes 1, 17, and 20!

After turning on and off the radio, the headlights and basically jiggling everything, all returned to normal. A/C compressor came on, radio worked normally, etc. I replaced the grounds and battery terminals about a year ago.

I have had problems with my main relay in the past. Could the loose contact be causing this while driving or am I looking at a short someplace?

 

[SETI20]

You're most likely looking at a short, or a broken ground.
So many electrical problems, wich all can be contributed to grounding, can't be a coincidence.

Could be as simple as your battery terminal that's undone. Or as exotic as a broken fuse box.

 

[ludesrv]

You need new grounds. Sounds more like the 12v wasn't grounding if everything came on after a bit with no fires lol. Get the honda manual for our cars and then look at the electrical section for grounds. You would be surprised at how many grounds you need to look at and replace.

 

[Charles]

But I just replaced the grounds a year ago with beefier wire. They still look fresh.

 

[ludesrv]

But I just replaced the grounds a year ago with beefier wire. They still look fresh.

Have you checked the in dash grounds that the relays rely on?

 

[Charles]

No. Where are they located?

 

[dohcrxl]

Near the main relay on the same structure the main relay bracket is mounted to. Your problem is one I've had before but that was due to an alternator that took a permanent bathroom break. Got good voltage?

Click THIS and see if anything applies.