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89-93 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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  Topic Review (Newest First)
05-19-2019 06:05 PM
9297oldram
Quote:
Originally Posted by UncleSam22 View Post
Ok. Thank you. Is there an easier way? I couldn’t find the sending unit for the First Gen that wasn’t $700. Is going with like an air dog or something like that simpler?
A electronic LP isn't simpler it's only making a simple engine not as dependable. A sending unit for the module shouldn't be $700.
05-19-2019 05:41 PM
UncleSam22 Ok. Thank you. Is there an easier way? I couldn’t find the sending unit for the First Gen that wasn’t $700. Is going with like an air dog or something like that simpler?
05-15-2019 05:05 PM
9297oldram
Quote:
Originally Posted by UncleSam22 View Post
I got the whole drop in module for the 96. And yes the connector is different.
You'll have to get a connector from a 96 and then cut the connector off the 1st Gens wires and then wire the 96's connector to the 1st Gens wiring.
05-15-2019 03:58 PM
UncleSam22 I got the whole drop in module for the 96. And yes the connector is different.
05-15-2019 03:44 PM
9297oldram So your using the sending unit for a 96 Dodge diesel truck on your 1st gen fuel tank module? And the wiring from your truck has to be connected in order for the sender to read, but not sure if the 96's is the same ohms as the 1st Gens.
05-15-2019 03:34 PM
UncleSam22 No there is no pump. Just a mistake on my part. I meant the sending unit. Do the pigtails have to be connected or is that just for fuel level?
05-14-2019 06:27 PM
9297oldram
Quote:
Originally Posted by UncleSam22 View Post
Well, now it starts. But I wasn’t sure if my pig tail had to be connected for the pump to work correctly or if that was just for fuel level. It starts about like it did before and sat and idled for a good minute or so and then it started to lose fuel. I pumped the accelerator and it kept running and would run as long as I kept my foot lightly on the pedal. If I let off it would lose fuel and die.
What pump the 12v's don't use a intank pump. If your module has a intank pump then it's for a gas truck and the pump is causing problems by restricting fuel flowing to the engine mounted LP.
05-14-2019 06:01 PM
UncleSam22 I should add that the sending unit was a new Carter P74699R might be rebuilt but I bought it as “new”.
05-14-2019 05:59 PM
UncleSam22 Well, now it starts. But I wasn’t sure if my pig tail had to be connected for the pump to work correctly or if that was just for fuel level. It starts about like it did before and sat and idled for a good minute or so and then it started to lose fuel. I pumped the accelerator and it kept running and would run as long as I kept my foot lightly on the pedal. If I let off it would lose fuel and die.
05-14-2019 04:58 PM
9297oldram So is it running and starting like it's supposed to? From what i've read on the 2nd Gen section the 96's fuel modules have issues with the fuel level sensors going bad. Also they no longer make them for it also for some reason.
05-14-2019 03:05 PM
UncleSam22 Hey, sorry it has been so long since I have been on. I followed the above advice and replaced the worn and cracked fuel lines into the sending unit. In the process I broke the sending unit. I replaced it with one out of a 96. I don’t know if I screwed up doing so. I am now having trouble of course because the electrical connector is different. The one on the pump is a 6 pin and the old one on my pickup seems to be a 5? pin. Any suggestions on how to fix this issue?
10-17-2018 02:56 PM
9297oldram Your sucking air into the fuel system like said above, old fuel lines will crack and let air into the fuel system.

Over night the next morning before you start it open the bleeder for the filter and manually pump the LP and watch for air bubbles to come out. If there is air bubbles keep pumping until all the bubbles are out and just fuel coming out and it will fire right up.
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