95 Blowing EFI fuses

[theking11863]

My buddy has a 95 3.0 and its blowing efi fuses every time we turn the key to the on position. Thing won't start because of this and I can't get a check engine code out of it because the blown fuse keeps reseting them. I've attempted to use an old short/ open circuit locater on it but haven't had any luck. Anyone have any suggestions on where to look for the problem?

Interesting things to note; while the circuit locater was connected I was able to fire the thing up a few times for about 30 second intervals before it would shut off. During those 30 seconds it would sound like it was running fine but flash the check engine light rabidly, which according to my research means the computer is detecting a misfire. Also the cat was stolen off this thing so I'm wondering if that may be related to the problem somehow?


Sent from my iPhone using Tapatalk

 

[mikedks]

Check the O2 sensor wires down by the now missing CAT, common melt point but in this case maybe cut and grounding?

 

[fourwd1]

Check the O2 sensor wires down by the now missing CAT, common melt point but in this case maybe cut and grounding?

You beat me to it!

 

[theking11863]

Well I'll be damned. I had thought that might be a cause but was too lazy to get under the car (its parked in a middy driveway. Yuck) Now I just gotta find a way to clean that up

Sent from my iPhone using Tapatalk

 

[mikedks]

Ha, I like being right, though it doesn't happen often.
Ask my wife...

 

[ryandhaley2]

94 3.0 blowing EFI fuse

HELP I'M GOING CRAZY TRYING TO FIGURE THIS OUT

Hello, figured I might as well post on this thread because I cant create a new forum. I'm having a lot of trouble figuring out whats wrong with my 4runner. Been trying to figure it out for the past 7 days.

Here's how it happened. Driving down interstate. Moments before losing all power, fuel gauge jumps from almost full to totally full, gas light comes on, rear anti lock light comes on. Truck instantly loses all power then shuts off.

Blows the EFI fuse every time you try to start the car.


Checked the O2 sensor wire, it was ziptied away from the exhaust, wire in great shape.

AFM is unplugged, fuel pump is unplugged at gas tank, o2 sensor unplugged, COR is unplugged.

With all that unplugged, used a jumper wire to jump the Fp and B+ terminals. EFI fuse blows every time you turn the key to the ON position, not the START, dont know if this is signifcant.

Where do I need to look? What could be blowing the fuse. Thanks for the help

 

[naturerunning]

What was the culprit? I'm having the exact same issue. TIA

 

[Towns01]

EXACT same issue. Ever figure out the fix?

 

[WPG93]

First step is always explaining what your vehicle is, guessing they would have gotten better responses had they started with their model year, engine, and transmission.