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Jeep Wrangler YJ
YJ General Discussion
Fuse for Howell Fuel Injection
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<blockquote data-quote="machoheadgames" data-source="post: 433461" data-attributes="member: 18789"><p>Howell PCM might be bad. Factory 1990 4.2 won’t have an electric fuel pump, it has a mechanical pump. I believe the Howell adds an electric pump inline and you’re supposed to mount it to the fuel rail. So maybe find that and follow the wiring for it. </p><p></p><p>In a typical YJ with fuel injection, no check engine light or fuel pump means the pcm capacitors are bad. Not sure how that GM computer in the Howell kit works but I imagine it’s similar. Never seen anyone post this problem with the Howell tbi before.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 433461, member: 18789"] Howell PCM might be bad. Factory 1990 4.2 won’t have an electric fuel pump, it has a mechanical pump. I believe the Howell adds an electric pump inline and you’re supposed to mount it to the fuel rail. So maybe find that and follow the wiring for it. In a typical YJ with fuel injection, no check engine light or fuel pump means the pcm capacitors are bad. Not sure how that GM computer in the Howell kit works but I imagine it’s similar. Never seen anyone post this problem with the Howell tbi before. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Fuse for Howell Fuel Injection
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