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Is the main relay supposed to click?
There are actually two relays in the main relay. One is powered by the ignition and controls power to the ECU. The other is controlled by the ECU with an override signal when cranking and controls power to the fuel pump. The ECU relay will click each time you turn the key on or off.
Will Main relay cause car not to start?
If the engine will not crank, then you will need to get the main relay checked out. If the main relay is not supplying the engine computer with the power it needs, then the engine will not be able to crank and run the right way. Failing to get the main relay replaced will usually lead to the car being unusable.
What causes relay to click?
A relay that is turning on and off rapidly is what causes the noise in your car’s fuse box. This can be caused by a computer failure, resistance in the ground wire for the control side of the relay or high resistance in the power supply to the control side of the relay.
What does no start no crank no click mean?
But a no start, no crank, no click condition can be far more involved than that. In the old days, power flowed through the ignition switch and down to the starter solenoid. Not anymore. The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of two relays.
Why does my Honda Civic have no start?
My issue is similar to this question over here (intermittent crank no start). Though my no-start is now definite and no longer intermittent. I have had no starts about 60% of the time when I try and start my Honda Civic 97 up, especially on cold mornings, but even when the car’s warm. The main-relay clicks, but no crank.
Why is my car engine cranking but not starting?
In the video you linked, the engine is cranking but engine does not start. So I think it is not related to your It sounds like your starter or connections to your starter is broken. Perhaps when you touch the starter connections, you inadvertently caused them to move and reconnect properly.
How does the second relay work on a GM car?
The second relay, the more important of the two, is controlled by the powertrain control module (PCM). And it only operates the starter relay after it’s satisfied that the correct key is in the ignition. Obviously you must have a good battery and clean battery terminals.