EFI fuse blowing

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Oct 21, 2007 | 06:50 AM

91 4Runner

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Joined: Nov 2004

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From: Ameliasburgh, On. Ca.

EFI fuse blowing

My brother inlaw finally came to his sences (Jeep/Mopar guy) and got a 1990 Pickup, everything was working fine and all of a sudden it started blowing the EFI fuse. Put a new one in and 2 seconds later it blows. Anyone have an idea what might be causing this? Any suggestions what to check? Any help would be great... Thanks Larry

Oct 21, 2007 | 07:02 AM

thefatkid

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Joined: Jan 2006

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From: Littleton, CO

A common one is the wires shorting to ground where the O2 sensor wires cross around the tranny crossmenber. Under the exhaust.

Last edited by thefatkid; Oct 21, 2007 at 07:03 AM.

Oct 21, 2007 | 07:49 AM

Targetnut

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Joined: Jul 2005

Posts: 554

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From: Manassas, VA

^^^What he said^^^

Another likely spot for shorts on a 22RE is where the harness goes over the fuel rail it can rub through and depending on which wire/wires short can cause several different problems.