does anyone know where the fuel pump relay on a 93 yota 4x4 is located, and where in the heck is the fuse for it? If anyone can help it would be greatly appreciated.

 

It's called a circuit opening relay on those vehicles and it's behind the right side of the dash, very right hand side just above the kick panel. Should have 5 wires, white/red, green/yellow, black/red (or black/white), white/black and blue. It uses the EFI fuse.

 

Yep, Circuit Opening Relay, located as noted, mine is sort of behind/above the ECU:

http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump

 

thanks guys for the info i found it! i got another relay and it still didnt switch on the fuel pump. I know the fuel pump is good, i can run power straight to it and it pumps fine. I also know that there is power to the relay from the center white wire when i turn the key on. does this mean that my new relay is no good either? My main question is how do you test the relay to see if it works or not and are there any other possible culprets to this problem that i am over looking. im getting desperate. I would greatly appreciate any help with this problem. thankyou

 

can i run a hot and ground to the fuel pump from the ignition without hurting the fuel pump? is there any reason i cant just do that?

 

The CO relay does not come on with the key, see the page I posted above for a description of how it works, how to test it, etc.

 

thankyou very much 4crawler for the info. I have found that my mass airflow sensor is not working. somehow the wires were pulled out of it, could this be the problem?

 

Seeing as how the Air Flow Meter is what turns on the CO relay that supplies power to the fuel pump, I would say so!

 

thanks again 4crawler i was almost ready to give up. im good at fixin problems once i know what the problem is but i suck at diagnosis when it comes to all these new fangled relays and sensors. Thanks a million, i owe you one. yotatech rules!

 

Just ran into a simillar problem my MAFM pucked out last night. While i was troubleshooting the system, i found that at least on the 2nd gen. 4-runners with the 3.0 thier is a EFI relay and 15 ampere fuse on the passenger side wheel well in the engine bay. Also thier is the open circuit relay located behind the glove box mounted @ the a pillar it has a 6 pin white connector attached to it.

 

thanks for all the info but my motor is shot. read about it in "93 22re is toast!


my truck: 93 toyota 4x4 extended cab