Fuel pump test lead on 89 S10 Blazer 4.3 liter

Asked by Apr 21, 2017 at 04:47 PM about the 1989 Chevrolet Blazer 2-Door 4WD

Question type: General

I grounded the fuel pump
test lead on my 89 S10
Blazer and motor instantly
stop what did I blow

1 Answer

109,575

Most likely the fuel pump fuse, you also have a 50/50 chance that damaged the fuel pump relay if it stayed connected too long.

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