Help with relay problems

[vtecboy]

hello,
I need help. I have a 2000 mitsubishi eclipse v6.
Like 1 year ago my MFI relay went bad. The car intermitenlty stalls when i was driving. I replaced that relay after dealing with this problem for months, because it was a pain in the a*s to find the problem.
So I replaced that relay and the car workd fine for 6 months. Then again the same relay went bad! .So i replaced that MFI relay again and it's working fine.
What could be the cause of those relays going bad in that circuit?

That MFI circuit appears to supply power to the crankshaft position sensor,iac valve,egr vacuum solenoid and distributor. When the relay fails the car stalls immediatly. I had to turn off the switch and then try to start the car,it was an intermittent failure. It randomly happends.
So im on my second relay on that circuit.

Also i noticed that when the relay fails. it was supplying only 3 volts instead of 12v.

HELP.

 

[mattd]

high circuit resistance or high current draw.

Did you use an OEM part?

 

[vtecboy]

Yes. I'm using an OEM one,i picked 3 of those relays from the junk yard.
How do i test for high current draw?...with and amp meter in the fuse box? or how?

 

[mattd]

first thing i would do to is see if there is any corrosion in the fuse panel. If there is, that is your high resistance and will stress circuits. This would explain your low power supply.

 

[NHGUY]

I had a Mitsu do a similar thing,it turned out the wire that fed the relay (from the underhood fuse box) grounded to steel and even eventually burnt thru and broke the wire.The relay in the console would click occasionally when the wire grounded out.