Magnum advice needed for 88
All Star
Joined: Mar 2012
Posts: 752
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From: Southeastern Virginia
I have the smallest and most obscure tank for them apparently. I have never put more than just shy of 15 gallons on mine. And it ran out rolling up to the pump. All the local cheap yards like pull-a-part punch holes in the tanks and oil pans of everything, so unless I can find a deal somewhere else, I'll probably have to get a return style rail and external fuel pump.
Champion
Joined: Jan 2013
Posts: 4,737
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From: Northwest Louisiana
Gotcha....I didn't realize the carb'd 88's had a mechanical fuel pump? I thought all the Dak's had the intank pump. As noted before, my 90 had an intank pump/sender on the TBI setup. I kept it and just used a bypass fuel regulator for my carb.
PS, I had a festiva a few years ago....that little car was a blast to drive. I actually traded it for the rims/tires on my Dakota, lol....My friend runs a tire shop so we did some bartering.
PS, I had a festiva a few years ago....that little car was a blast to drive. I actually traded it for the rims/tires on my Dakota, lol....My friend runs a tire shop so we did some bartering.
The 1987's, OTOH, did.
But then, the 1988 never had a V8 from the factory.
To the OP - the factory 1988 hat will fit and work fine; if you're using a 1988 tank and hat, you can always move your current sending unit over to the new one. Or just rebuild the old one to spec.
I'd use a higher flow / higher pressure pump; factory on the 1988's only had to sustain 14.5psi(!!)
RwP
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Registered User
Joined: Jun 2017
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From: Indianapolis IN
The 1988's are TBI, and don't have a mechanical pump.
The 1987's, OTOH, did.
But then, the 1988 never had a V8 from the factory.
To the OP - the factory 1988 hat will fit and work fine; if you're using a 1988 tank and hat, you can always move your current sending unit over to the new one. Or just rebuild the old one to spec.
I'd use a higher flow / higher pressure pump; factory on the 1988's only had to sustain 14.5psi(!!)
RwP
The 1987's, OTOH, did.
But then, the 1988 never had a V8 from the factory.
To the OP - the factory 1988 hat will fit and work fine; if you're using a 1988 tank and hat, you can always move your current sending unit over to the new one. Or just rebuild the old one to spec.
I'd use a higher flow / higher pressure pump; factory on the 1988's only had to sustain 14.5psi(!!)
RwP
Last edited by gauge_half_inch; Jun 6, 2017 at 07:20 PM.
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Yes, it was.
However, that was less than 5% of the trucks sold; I forgot the 4banger.
Hrm ... not sure the factory sending unit is the same 4cyl to V6.
So, inline fuel pump, and verify that you can return, or use a returnless regulator and make sure the pump can take it. (Not all can work with that much head ... )
RwP
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Registered User
Joined: Jun 2017
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From: Indianapolis IN
Just looking over the wire schematics, for the returnless fuel system on the 95 Dakota, the fuel pump does not have a separate module to regulate voltage to adjust fuel pressure? Or does this system not work like other companies build their systems? If I could source a tank and pump assembly from a 95 magnum it should in theory bolt up and just have to run the 12v and ground to the pump assembly, then tap into my existing level sensor wires?
Record Breaker
Joined: Aug 2013
Posts: 1,033
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Just looking over the wire schematics, for the returnless fuel system on the 95 Dakota, the fuel pump does not have a separate module to regulate voltage to adjust fuel pressure? Or does this system not work like other companies build their systems? If I could source a tank and pump assembly from a 95 magnum it should in theory bolt up and just have to run the 12v and ground to the pump assembly, then tap into my existing level sensor wires?
All Star
Joined: Mar 2012
Posts: 752
Likes: 2
From: Southeastern Virginia
If I could source a tank and pump assembly from a 95 magnum it should in theory bolt up and just have to run the 12v and ground to the pump assembly, then tap into my existing level sensor wires?
Last edited by ragged89; Jun 8, 2017 at 11:40 AM.
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Registered User
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From: Indianapolis IN
That is correct, pump just runs, regulator keeps fuel pressure at the correct level. As you know, '92 and '93 Magnums have the regulator on the fuel rail and a return line from the rail to the tank. From '94 on, the regulator is on top of the tank and there is no return line. My understanding is that the '94-on "returnless" system really just shortens the return line, keeping it right at the tank vs. running a line to the fuel rail.
Yes. Your '88 chassis wiring has all the wires there to handle the pump power and fuel level circuits, you'll just need to grab the '95 connector so you can splice it onto your chassis harness.
Yes. Your '88 chassis wiring has all the wires there to handle the pump power and fuel level circuits, you'll just need to grab the '95 connector so you can splice it onto your chassis harness.