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Old 06-27-2016   #8
Paul Workman
 
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,466
Default Re: Fuel pump hotwire

Quote:
Originally Posted by Chris26 View Post
I got a 6.17a reading...
Assuming proper connection/setup, THAT reading appears to be low, i.e., one pump only, or one pump may be faulty, or a bad connection(?).

While monitoring the current, pull the FP1 fuse on the main panel and see what the current is. (Current adds in this case. So, pulling only one fuse and seeing what current remains will tell us what the current draw of each pump is.)

Here is a schematic from a 90 FSM which I hope is similar enough to work on later mo cars too. (Someone may correct me if this isn't accurate beyond the 90 Zs)

Fuse location (1990): one on the main fuse panel, one on the auxiliary panel accessed behind/under the passenger knee panel).
Attached Files
File Type: pdf Fuel pump schematic 1 of 2.pdf (544.4 KB, 31 views)
File Type: pdf Fuel pump schematic 2 of 2.pdf (365.6 KB, 13 views)

Last edited by Paul Workman; 06-27-2016 at 11:26 AM.
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