I posted a 'thank you' a couple days ago to the board for making me aware of the fact that the fuel pump relay sometimes can cause a no-start problem and there is a back up in the fuse box that can be swapped in to fix the problem.

A few days after I had to make this swap, the same thing happened again, this time I swapped in the A/C relay. But this got me to thinking about why two relays would fail in such a short time frame (especially if the backup probably had never operated since the truck was new).

I looked at both old relays and noticed the contacts were a tad corroded, but not too bad. Just for fun, I got out some fine sandpaper and cleaned up all the contact blades.

I put the original relay back in and it starts and runs fine! I'm still going to order a new one and relegate the original to a spare, but thought I'd pass along that just because the relay quits on you doesn't necessarily mean it needs to be tossed.

I'm also going to pull all the relays and fuses, clean them all and apply a coat of petroleum jelly to help slow down future corrosion.

Jay


1991 Trooper - DEAD! 2.8 V6, 5 spd, 4WD, HD clutch, 2.25" exhaust, EPROM Chip, KC/Hella, Aisin hubs, Rancho 9000X's, Panasonic/Infinity/Alpine
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