Howell TBI Conversion Kit fuel pump won’t work

[Aml1990Jp]

Hello everyone I just installed a Howell TBI conversion kit on my 1990 YJ but fuel pump won’t work. Any ideas?

 

[Gilaguy23]

Verify you have power to the pump when the key is in run. It may be a dead pump, if it is call Howell.

 

[Flyer58]

What controls the pump with this conversion? The PCM or a new PCM? Newer injected YJ's have a safety feature that turns on the pump for 1 to 3 seconds to prime the injectors, then stops. Can you jump a fuel pump relay to get it to work?

 

[Gilaguy23]

I had a cj7 with the howell kit. for the most part it used chevy 4.3 parts with an inline electric fuel pump tapped into a hot when key on line. Im curious on a YJ how they do it but IIRC howell offers instructions on their website.