I personally think it's that handling and jostling of the innards that temporarily frees up the relay rather than the actual soldering being the fix. If the car is parked for a long period, the interior usually has cooled enough for the joint to make contact again, and you won't notice a problem. The process is very simple if you have a shop heat gun. Thanks So I changed the big capacitor and there was no change. For example, your Honda Accord starts great in the morning, drive around town, stop a the grocery store or the gas station and the vehicle no longer starts up after a hot soak. If continuity exists, go to next step.
Any more options or something definitive please input. My resoldered relay would pass all diagnostic tests, but the fuel pump still wouldn't run. If I jum the A7 pin with the A23 pin which is a gound I get the pump to turn on. Then check for continuity, , between the No. With the bracket loose we can now lift out the relay. On some models of the Civic and Civic del Sol it is located to the left of the steering column under the dash.
You can save this photograph file to your personal computer. Open the Main Relay to expose the connections, and place it in an upright and flat position. The main relay in a vehicle controls the and supplies power to the injectors. Check for continuity between relay terminals No. Remember it is not the actual relay itself that is at fault, just the soldering. If continuity exists, relay is okay. The second relay is energized for 2 seconds when the ignition is switched on, and when the engine is running.
Remove your fuse box cover to gain access to the coin holder. If continuity does not exist, replace relay and retest. Now you talk about heat inside the cab of the car. Repairing soldered joints with a soldering iron could potentially restore a non-working relay and fix your ignition issue without a relay replacement. This kind of picture Marklamond. That's just my opinion and you know what they say about opinions. These components are basically switches that open and close a circuit by electromechanical or electronic means.
When this happens, the engine will crank over because the starting circuit is still good, but the Idle Air Control Valve, Fuel Injectors and Fuel Pump will not have battery voltage because of this bad Main Relay. Now you have to remove the old solder from the board. Any and all trademarks are property of their respective owners. This relay controls power to fuel and spark circuits. If there is no continuity, replace the relay and retest. While replacing all the solder on the relay will bring it back to life, it the solder hasn't gone bad, it has just separated from the board. Remove the screws that hold the lower cover in place and push the top and bottom tabs to unclick the panel from the side.
Just wanted you all to know I was having this problem, and I did replace the fuel relay before I read this information, but the new one did the same thing 4 days after I installed the relay. I will try to trace and see if I can locate the parts linked to it. The relay should now be free from the housing. When solder on the relay becomes cracked or damaged, resistance can occur in the relay followed by a voltage drop. The bolt securing the relay is well hidden, you can access it from the directly above the hood lever.
If there is continuity, go on to Step 3. These parts are vital to ensure proper electrical function—not to mention safety—in a vehicle. It is a main relay click. Then check that there is continuity between the No. If the fuel pump still does not work, keep testing down the wiring harness toward the fuel pump. You should hear a click under the dash after it. To repair the fault all we need to do is remove the old solder and re-apply fresh.
I would just like to thank this form for keeping me from going bonkers over this car I love so much. Dry joints are caused by vibration and changes in temperature cracking the solder round a joint which has not flowed correctly. Here are a few examples of what dry joints looks like. When mine started acting up I just ordered a new one. I replaced all the burned electrolytic capacitors.