Ricky8227 Posted September 30 Share Posted September 30 I have a 1989 jeep Comanche 2.5l 2wd. Which one of these relays is the fuel pump? Fuel pump was turning on, now it’s not…. Pretty sure the fuel pump just crapped out. But still wanting to identify these relays… thank you Link to comment Share on other sites More sharing options...
eaglescout526 Posted September 30 Share Posted September 30 I think it’s the left most relay. Middle ought to be O2 and that third one is probably fog lamps or AC. But probably fog lamps since it doesn’t look like you have AC. Link to comment Share on other sites More sharing options...
llhat Posted September 30 Share Posted September 30 swap left and middle relay and see if pump runs... On the right is the start relay... beside the threaded stud is a single blade connector this is part of the fuel pump circuit, it energizes the pump during start sequence you can pull that connector ( it will be female) then jump that female connector to the + battery terminal with a jumper wire fuel pump should run. on driver's side fender beside air box it the ballast resistor.. make a jumper between the two terminals to see if pump will run. if it does, then replace resistor do one thing at a time though... Link to comment Share on other sites More sharing options...
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