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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Fuse for EFI blows

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Old Nov 4, 2010 | 07:15 PM
  #1  
lutherf123's Avatar
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Fuse for EFI blows

I have a 93 Toyota 4x4 that blows the fuse for the EFI. Does anyone have an idea what the problem maybe?
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Old Nov 4, 2010 | 07:47 PM
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1989toy4wd's Avatar
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From: Beaumont, Tx
First check the 02 sensor wire. They are known to rub against exhaust and short out.

Mine did it because the VAFM was shorted out internally. Unplug it, replace the fuse and attempt to start it, it more than likely wont run but the point is to see if the fuse blows. If it blows again, its not that. I actually did this to everything on the circuit (unplug, replace fuse, attempt to start) because I didnt have a DVOM to check anything.
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