main relay

[robbiediezel]

hi i have a 91 integra.. its been running just fine till the other day it wouldnt start on me. The motor cracks over but will not start.. i have changed the coil checked that it was getting fuel and both seemed good. I check the main relay and when i checked one of the wires of the 8 did not light up my test light. does anyone know what wires do what in the main relay? does anyone have a diagram or something?
thank you

 

[djzachtyler]

easy test for your main relay... turn the key to the ON position but do not start the car... CEL should come on for about 2 seconds followed by an audible click (this click is the main relay) CEL should shut off and you will hear the fuel pump whir for a few seconds as well. do this 5-10 times consecutively... if there is no click when the CEL shuts off then you have a failing main relay. if you do not get the click every time you do this test you should replace the relay...

Also do a resistance test on the coil you replaced there is a 50/50 chance it was bad out of the box... have had more than 1 aftermarket coil be shot brand new off oreilly's shelf.