Follow the pictures I posted, it doesn't get any easier.fyi, the wiring of the id parts guide doesn't work for an '03 ALH, different harness. The basics are correct, but the guide on where wiring is is not.
I've got a lift pump sitting in a box for mine I've not gotten around to installing for this reason.
IF you do the check valve and extra fuel line customization it will restore the stock ALH IP sucking action if the pump fails. If you don't it is a problem. There is a link to the process somewhere here on the forum.Finally, if the pump fails, does it fail open or closed? Meaning, does the system revert to the ALH injection pump sucking fuel as usual?
I read through that fail safe option, and at the very end the viton hose failed due to heat issues in stop and go traffic after 3 hours. That is unacceptable. Anybody know of a different material?
Yes, 5/16": http://www.dudadiesel.com/viton.php?affiliate_pro_tracking_id=17:18I read through that fail safe option, and at the very end the viton hose failed due to heat issues in stop and go traffic after 3 hours. That is unacceptable. Anybody know of a different material?
Follow the pictures I posted, it doesn't get any easier.
The relay triggers the liftpump.What is the purpose of the relay? Is it just a safety kill switch when the key is off?
The lift pump will rob volts from the fuel shut off valve. The shut off valve will eventually shut due to lack of volts holding it open, then the motor will konk out and you'll be stranded.Is the relay necessary? In other words, can I just run the signal wire direct from the injection pump to the lift pump?
You got it.Please excuse the noobish question, but what's the reason for retrofitting a lift pump to an ALH? Is it to support engine mods?