Yet another '84-'85 fuel pump weirdness thread. What I mean by that is the fuel pump won't run unless the trailing coil is something something. It's a relay that turns the fuel pump off for safety reasons.

 

 

You'd have to see the other forum to understand. It seems to pop up there like once a week.

 

Well I don't want you to think I'm acting like the other forum...LOL.



Got the Walbro in place where the old pump was...now for fittings and new hoses. All the hoses under there are exhibiting dry-rot!

 

the 84-85 setup works like this: dizzy sends tach signal to ecu, ecu sees it and turns on pump. the 79-83 setup just has the pump connected to the "on" position of the ignition switch

 

With the Haltech, am I going to need anything else to make the pump work?

 

no, just use the haltech fuel pump wires, thats what they there for

 

Excellen, I was thinking/hoping as much!



Thanks as always for the help.

 

The 12A type fuel pick up tube may be too small of a straw for the bigger

pump to suck through. The GSL-SE pick up is much larger.

The existing steel lines running to the engine compartment are probably ok -

if you want to upgrade, just run a new 3/8" line to the front and use the old

feed line as the return.

You also need to run new wires to the pump - the stock wiring harness isn't up

to the job. I've even had problems powering a 6 psi pump for a carb. Use about

12 gauge or so from the battery (fused) to a relay (haltech may have provided one)

to the pump. Also don't use the harness ground wire - it's no good either. Just

run a wire from the pump ground to a conventient chassis bolt.

 

Thanks for the info, I will check with the new RX-7 parts store I found locally.