So my 92 Accord EX with 206,000 miles has started to throw codes. The Codes I get Are;

CODE 6 – Coolant Temperature.

CODE 20 – Electric Load Detector (ELD)

Transmission Code

10- Coolant Temperature sensor.

So far I've Swapped two seperate Coolant Temp Switches out (the 2 pin plug under the distributor) and it has not changed anythign, as well I checked them all with an Ohm meter and they all work exactly the same.

It drives perfectly normal until the light comes on the dash, then it seems as if it idles higher, and the idle goes way up when you put it in park.

I guess the next thing to do is swap out the ELD with one from the junkyard, but would a bad ELD throw all those other codes? Any ideas?

TIA

 

Also, not sure if its related, but I noticed the other day, both the radiator and AC fan run when they kick on, and the AC is not on.

 

Anyone?

 

coolant temp probably is caused from a bad thermostat. Is your temp guage looking a little high/low? Its an easy fix. Start there.

 

Temp Guage reads perfect all the time. Also checked the voltage at the coolant temp sensor plug and it was good. I've bled the coolant system multiple times and have made sure the overflow tank is full. Yet everytime I reset the ECU, within 100 miles I get the engine light back up with the same codes.

Wondering if the ELD is causing this? I guess a trip to the junkyard couldn't hurt.

 

So I replaced the ELD today and the code 20 went away, but I'm still getting the Coolatn temp code and now it comes on immediately so I think something failed, I'm just sure what. The Thermostat is working okay, I can feel the lower hose get just as hot as the upper after its been running for 5 minutes or so.

I checked the front fan sensor located where the upper hose goes into the engine right in front, and I noticed that one side of hte plug is a ground and the other side has power when the motor is running. I wasn't aware that other wire should be a ground? and if you try and jump the wires it sparks. As well both AC and radiator fan come on at the same time, when the AC isn't even on. So I think its something in the wiring with the fan switches.

Can anyone point me in the right direction?

TIA

 

ever think i might not be a sensor itself but the wiring to the sensor?

 

I spent all day troubleshooting, looks like my fan switch on the water outlet (not the one on thermostat housing) Is bad, but I also found that my Coolant temp switch is not getting 5 Volts. I think it was intermintently previously and now its just not getting anything which makes sense since before the the check engine light would just go off from time to time and now it goes off immediately.

So now I'm at a loss to figure out why its not getting the proper 5 volts? The other side is getting ground. Could it be the radiator fan timer?

 

Maybe you got a bad head gasket and water is sipping in to the cilynder
I have a 92 and it’s got that ..the car ran good until the check engine came on than it just wasn’t idling right it runs clean all your sensors see what happens also I had a broken Wire on the connector cooling unit
Sensor it was hard starting but now it starts but it take a couple of tries