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

trouble code 51

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Old Nov 10, 2013 | 08:07 AM
  #1  
tysen86's Avatar
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From: Calhoun, GA
trouble code 51

My '91 is throwing a code 51 (switch signal). I have two questions, 1) what switch does this refer to, ignition? 2) could this be causing a miss? Thanks for any help.
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Old Nov 11, 2013 | 10:10 AM
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scope103's Avatar
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What Sayeth the Good Book? http://personal.utulsa.edu/~nathan-b...85diagnosi.pdf

Probably not the cause of the miss, but if your TPS is mis-set far enough, almost anything could happen.
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