Ot dodge pickup fuel pump

Sorry for the OT but I need help, input. I have a 1990 Dodge W150 4x4 with the fuel pump in the gas tank. Pump went bad and I did not want to take the tank out so I raised the bed and replaced the pump. New pump went bad. If I put in an external fuel pump will it pull fuel through the in tank pump? What size, type pump will I need If this is possible?
 
I am in no way an authority, but, I tend to always stick to the original engineering design, if possible.

I would wonder "why did the new pump fail"?

Sometimes the fuel pressure regulator is built in to the fuel pump assembly.

John,PA You need HOBO's advise.
 
I would not expect an external fuel pump to pull through the dead one, it would be a bad idea. If you intend on going to an external pump you will need to disconnect, remove and bypass the internal one. As far as volume and pressure requirements for a '90 Dodge I have no idea.
 
Not familiar with the Dodge pump but you could easily find out by breaking the line somewhere and starting a syphon. If it wont syphon an electric pump isn't going to pull fuel that you can bet on. Back to the tank pump there are many choices for quality (at least on a Ford) and the elcheapos dont last for nutten. Bosch is good, Dephi is good, the ones that cost half of those two are crapola.
 
I wouldn't do that. You need to find out why the pump failed. Did you clean out the tank? Debris causes premature failures. Insufficient power or grounds causes the same type of failure. Put a voltmeter lead on the power input to the pump at the pump and put the ground lead on the ground side and power the pump by cycling the key. You should read battery voltage. If not find another ground at the chassis and see if you have battery voltage then. Voltage drop kills pumps too. Post back
 
Not helping answer your question, but I recently changed a fuel pump on a vehicle that had a removable cover so you did not have to drop the tank. This is a great idea, and wish they all were like this. I have always considered that the next pickup I do I may look at cutting a nice hole in the bed, just above the pump, and making a removable plate so it could be removed should it be needed in a case such as yours. Sure would beat removing the bed, and should not be hard to make one that would look decent and serve the purpose.
 
Is this the setup with a large fuel filter in the tank, at the base of the pump?

If so, debris sure shouldn't have been the cause of the second pump failure. (NOT sure what year they started that, maybe a little later?)

I would replace it again with a QUALITY new pump, Bosch deems to have the best reputation, some of the generic pumps out there are just JUNK!
 
TOYOTA was doing that a long time ago. Mostly passenger cars, though. According to my various factory service manuals in my collection.

John,PA
 
I don't know about a 90 dodge pickup but my 98 Dakota has the pressure regulator right on top of the pump also. The regulator leaked back immediately upon shut down on mine. Replaced pump and it gave me trouble less than a year later. Went for a so called better quality pump next time. Cut hole in pickup bed after taking out tank second time. Too difficult to get the fuel line and electrical connections unhooked by lowering tank. Should have done that first time. I did have tank out when cutting hole for safety reasons. Used a jig saw, worked great. I would not try to pull through old pump with an external pump.
 
If you want to cut an acces hole in the bed, maybe you can find a similar bed in a salvage yard and cut out a slightly larger piece that will overlay the hole that you cut. Use a few flat head metal screws and you will have access any time that you need it. Personally, I would use modified truss screws available at most hardware stores.
 
I put a fuel pump in a Focus and access was under rear seat. Big rubber grommet to get to the electric and fuel line. The fuel pump wouldn't fit thru the grommet hole so we snipped the floor board like a star shape and bent the metal back a little to gain diameter of the hole. When all done we sealed up the cuts after bending back down and the grommet fit back just like it did before.
 
I guess I'll just raise the bed again to replace the pump. I bought this pick up new. It has been used as intended but never abused. The body is in absolutely undamaged condition with NO rust. The inside is in unbelievable condition also. The original seat has never been sat on because I put a horse blanket seat cover on it when new and have kept one on ever since. I hate to take a saw to this truck on the condition it is in. 227,000 mi and still runs good. Oil pressure is a little low. The only thing I have done to the engine is replace the water pump. Everything else is original. Needs paint. Can't post pictures. Computer was wiped clean when we got rid of the Interpol scam.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top