Hey guys, I don't know what's going on with this car anymore.
The car was running perfectly yesterday, drove it around, came back, fine.
Today I start it up to take it to an exhaust shop and it runs like ass, if you give it gas it sputters and pops (open downpipe by the way), and the tachometer and speedo read high.
The tach, when the engine is switched off, stays at 1000 rpm. The speedo stays at 10 MPH. This is in accessory mode. When started the car will show a completely inaccurate Rev count. I wasn't able to test all the different gauges, but I will return to this later.
So, my first instinct is that I now have an electrical short somewhere. So I grab my electrical manual, and go to town.
I can't really get anywhere with it, because going by the diagnostic they give me nothing appears wrong. So I start unplugging shit hoping I get it fixed and a connector is water logged or something, I ended up unplugging everything except the dash harness, ecu unplugged, entire engine harness unplugged, etc. But the gauges still moved when the engine was off.
So I started unplugging harnesses for the gauge cluster, and I found that the small green harness on the far left front (I don't remember the Honda designated number for it) that has the blue and orange wire would make it go away. Also doesn't help me any because those blue and orange wires go f'ing everywhere.
I noticed that when this was unplugged however, the fuel gauge would slowly go from half a tank to 7/8ths of a tank of gas.
When I did run the car I didn't get any CEL, but I did confirm the CEL works. I firstly assumed that it rained and my ecu got wet so I plugged in my spare (it isn't the "right" ecu but it will work) and it still didn't work. However the second ECU DID throw a CEL.
I don't even know where to go from this. I have no idea how a massive short like this could just show up overnight like this.
Is it a short? Is it a bad ground? The only things that have been changed recently is that I installed my cooling system, bled it, and installed my blower motor and stuff getting ready to drive it. But it ran fine after I did all of that stuff.
The only thing that happened that I can think of is that it rained last night so I'm worried water got in. But where could water get logged into these wires (most of which are weather pak connectors) to short MULTIPLE things to ground like this.
Please someone help me. I will give you my phone number. Call me. Text me. I am desperate. I fear that I have angered the spirit of Soichiro Honda and he doesn't want my car to run. Every time I fix everything on it, ten more things break. I've replaced every single part on this car at least once. I took the entire dash out to fix wiring properly to prevent an inevitable electrical short and even after I do that, it still does this .
The car was running perfectly yesterday, drove it around, came back, fine.
Today I start it up to take it to an exhaust shop and it runs like ass, if you give it gas it sputters and pops (open downpipe by the way), and the tachometer and speedo read high.
The tach, when the engine is switched off, stays at 1000 rpm. The speedo stays at 10 MPH. This is in accessory mode. When started the car will show a completely inaccurate Rev count. I wasn't able to test all the different gauges, but I will return to this later.
So, my first instinct is that I now have an electrical short somewhere. So I grab my electrical manual, and go to town.
I can't really get anywhere with it, because going by the diagnostic they give me nothing appears wrong. So I start unplugging shit hoping I get it fixed and a connector is water logged or something, I ended up unplugging everything except the dash harness, ecu unplugged, entire engine harness unplugged, etc. But the gauges still moved when the engine was off.
So I started unplugging harnesses for the gauge cluster, and I found that the small green harness on the far left front (I don't remember the Honda designated number for it) that has the blue and orange wire would make it go away. Also doesn't help me any because those blue and orange wires go f'ing everywhere.
I noticed that when this was unplugged however, the fuel gauge would slowly go from half a tank to 7/8ths of a tank of gas.
When I did run the car I didn't get any CEL, but I did confirm the CEL works. I firstly assumed that it rained and my ecu got wet so I plugged in my spare (it isn't the "right" ecu but it will work) and it still didn't work. However the second ECU DID throw a CEL.
I don't even know where to go from this. I have no idea how a massive short like this could just show up overnight like this.
Is it a short? Is it a bad ground? The only things that have been changed recently is that I installed my cooling system, bled it, and installed my blower motor and stuff getting ready to drive it. But it ran fine after I did all of that stuff.
The only thing that happened that I can think of is that it rained last night so I'm worried water got in. But where could water get logged into these wires (most of which are weather pak connectors) to short MULTIPLE things to ground like this.
Please someone help me. I will give you my phone number. Call me. Text me. I am desperate. I fear that I have angered the spirit of Soichiro Honda and he doesn't want my car to run. Every time I fix everything on it, ten more things break. I've replaced every single part on this car at least once. I took the entire dash out to fix wiring properly to prevent an inevitable electrical short and even after I do that, it still does this .
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