Electrolytic capacitors are known to leak & fail causing a wide variety of symptoms in EFI trucks up to 1993, but most commonly fuel pump running continuously at key-on with crank-no-start. Around '94, the capacitors used were a different type that don't exhibit this problem as often (yet). Fortunately, it's relatively cheap & easy to replace them at home with any
cheap soldering iron, some flux-core electrical solder, and the replacement capacitors (which can be bought in overpriced kits like
this or in bulk). Some paper towel or Q-tips and dilute alcohol may also be needed to clean up the leaking electrolyte.
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![electrolyticcaps93.jpg Electrolytic capacitors are known to leak & fail causing a wide variety of symptoms in EFI trucks up to 1993, but most commonly fuel pump running continuously at key-on with crank-no-start. Around '94, the capacitors used were a different type that don't exhibit this problem as often (yet). Fortunately, it's relatively cheap & easy to replace them at home with any [url=https://www.amazon.com/dp/B08PZBPXLZ]cheap soldering iron[/url], some flux-core electrical solder, and the replacement capacitors (which can be bought in overpriced kits like [url=https://www.amazon.com/dp/B076R36TPG]this[/url] or in bulk). Some paper towel or Q-tips and dilute alcohol may also be needed to clean up the leaking electrolyte.
IF THE IMAGE IS TOO SMALL, click it.
See also:
[url=https://www.supermotors.net/registry/media/901696][img]https://www.supermotors.net/getfile/901696/thumbnail/eecburned9258e4oda2z.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/901697][img]https://www.supermotors.net/getfile/901697/thumbnail/eecburned9358e4oda2z2.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/892730][img]https://www.supermotors.net/getfile/892730/thumbnail/eecconnectors.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/507187][img]https://www.supermotors.net/getfile/507187/thumbnail/relays1.jpg[/img][/url] . [url=https://www.supermotors.net/registry/2742/12737-2][img]https://www.supermotors.net/getfile/72010/thumbnail/j-3.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/833750][img]https://www.supermotors.net/getfile/833750/thumbnail/distributor9296.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/901663][img]https://www.supermotors.net/getfile/901663/thumbnail/connectors93.jpg[/img][/url]](https://www.supermotors.net/getfile/1165407/fullsize/electrolyticcaps93.jpg)