WalterIvanHurtado

The EFI fuse [15A] keeps burning; I replaced with a 30A fuse and it ran for 300 miles before burning 2 more 30A fuses in 2 miles. Today, just for the fun of it, I put a 15A fuse and the truck ran for 30 miles before burning again. Any ideas, please?

4Crawler

iTrader: (3)

Common cause is an O2 sensor wire that has burned insulation from contact with the hot exhaust, causing a short.

WalterIvanHurtado

Thanks for such a quick answer; I will check the O2 sensor first thing in the morning.

smarvin

I would also say the o2 wire . I learned the hard way after being stuck on the highway and 600$ later they still could not fix it.. but thanks to google phones and this site i fixed it for $ 0.32 in a parkinglot

WalterIvanHurtado

Smarvin,
Thanks a lot for your input; now I believe my problem is bigger: before, if I did not have a fuse on hand I was able to "bridge" the two ends on the fuse slot but now, even putting together those two ends [that I plucked from the fuse box] the truck would not start. Any ideas at least to get it moving to take it to the shop, please?

smarvin

Look under the truck for sure ! check the o2 sensor wire for being melted

WalterIvanHurtado

Thanks Scott; I will go under it.
Walter