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Starting problem once in a while

Big Aloe

Member
Joined
October 12, 2017
Messages
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City, State
Waimea HI
Year, Model & Trim Level
1993 Ford Ranger 4WD
!993 Ranger runs fine most of the time, until once in a while it won't start. Installed a new starter and battery,
engine turns over and even when I connect the fuel pump directly to the battery it won't start.
Got it going by pulling the PCM power relay and fuel pump relay and switching them around.
When testing those relays though, they are perfectly functioning.(12V click and continuity test)
So I'm suspecting my ignition switch is failing at times.
How can I install a separate 50Amp switch to save myself the trouble to install a new ignition switch?
 




Centaurious

Well-Known Member
Joined
April 28, 2015
Messages
433
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125
City, State
Pensacola FL
Year, Model & Trim Level
1994 Explorer Sport
Replace both relays. Tests with multi-meters are not absolute tests as they put no load on what is being tested. I've had car batteries that tested full voltage and wouldn't light a regular test light. Your relays probably have bad spots on the contacts and occasionally they make contact just wrong and no current flows.

As for a separate 50Amp switch, you already have one called a Fender Mounted Starter Relay.
 




Big Aloe

Member
Joined
October 12, 2017
Messages
12
Reaction score
0
City, State
Waimea HI
Year, Model & Trim Level
1993 Ford Ranger 4WD
Replace both relays. Tests with multi-meters are not absolute tests as they put no load on what is being tested. I've had car batteries that tested full voltage and wouldn't light a regular test light. Your relays probably have bad spots on the contacts and occasionally they make contact just wrong and no current flows.

As for a separate 50Amp switch, you already have one called a Fender Mounted Starter Relay.
Thanks Centaurious for quick reply. Isn't there a way to test the relays using an electric load?
As to the switch, I want a separate switch in the cabin just in case I get stuck.
 




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