Ask Experts Questions for FREE Help !
Ask
    pretypinkgumbal's Avatar
    pretypinkgumbal Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 11, 2010, 12:00 PM
    What does the main relay in a 1991 honda civic control?
    What does the main relay control on a 1991 honda civic?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 11, 2010, 12:09 PM

    The Main Relay contains two individual relays. One relay is energized whenever the ignition is on, which supplies battery voltage to the ECM, power to the fuel injectors, and power for the second relay. The second relay is energized for 2 seconds when the ignition is switched on, and when the engine is running which supplies power to the fuel pump.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

91 Honda Civic: Main relay? [ 16 Answers ]

Hi: I am having problems with my '91 Honda civic DX when I drive for a while, then I stop the engine for 5-10 minutes to do some shopping or whatever... and then try to start again. It doesn't start at all. But if I wait another 5 or 10 minutes and I try again, usually starts. I don't have any...

1991 Honda Accord Main Relay [ 3 Answers ]

Where in the main relay located on a 1991 Honda Accord?

Fuel injection relay 1991 Honda Civic EX [ 2 Answers ]

I have been reading the advice on home repair of this main fuel relay in the honda civic. I have identical problems and symptoms. My problem is that I can not find the relay. Ive had the fuse block almost completely out, and the relay is just not there, on the front side or back side. I...

89 Honda Civic Main Relay [ 2 Answers ]

I have read the articles you have on the main relay, but have been unable to find the main relay in my 89 Civic hatchback. I found a relay close to the location where you said it should be but after replacing that relay I still do not have power to the fuel pump and the ecu still reads a code 16....

View more questions Search