Did your Ranger run lousy without the in tank fuel pump not working

[greaseyfingers]

How lousy did your Ranger run on the primary fuel pump, without the in tank fuel pump working, on the year Rangers that they used two fuel pumps?

What year did they put the high pressure pump in the tank, instead of using two fuel pumps on earlier Rangers?

Would a newer Ranger's high pressure pump and fuel sending unit fit into a 87 Ranger's fuel tank, thus eliminating the secondary, in tank, low pressure fuel pump and the primary, frame rail, fuel pump?

Would a computer Code 95 - that says - Fuel Pump Secondary Circuit Failure, indicate the in tank low pressure fuel pump isn't getting power, pump isn't working, or pump isn't getting a ground?

How would a person determine the problem without dropping the tank, or pulling the bed?

Where is the ground located for the in tank pump?

I felt on top of the fuel tank where the sending unit goes into the tank.

It feels like the wiring harness enters the bottom of the cab floor, near the back and is routed underneath the carpet, to wherever it goes?

Do these wires have any type of a plug connection, somewhere, that may not be making a good connection under the carpet, to where ever these wires are routed to?

 

[adsm08]

Some times they run lousy without the low pressure pump, sometimes they run fine. Either way, they don't run long.

I've seen/heard of the trucks running fine without the LP pump, and I've seen/heard of them running like they are way too lean, but either way, the extra stress kills the HP pump pretty quick.

There is a thread on it around here somewhere, I'm not going to look for it right now, about how one of the B2 guys mounted a 4.0 tank pump to his 2.9 LP sender and it worked beautifully. The problem with just using the HP in tank pumps is that most of them are for 4.0s, and the fuel level sender operates in a different ohm range. That said, the second gen B2s (and I'd guess by extension the Rangers) only had 1 pump, so 89-92 2.9 pump should do what you want, possibly without any modding.

Generally "Secondary Circuit" means that it has somehow determined the fault to be in the ground leg of the circuit. If you really want to test to see if your tank pump is working, find your fuel strainer/reservoir which is near the t-case (if it's a 4x4) on the drivers side frame rail and unhook the top line in the rear, then turn the key to run. If the tank pump is working, you will get fuel. If it doesn't work, that still doesn't tell you if the pump is bad though.

As for testing your ground circuit, reach back up on top of the tank and unplug the pump, then start checking the pins of the plug for continuity to ground.

I like the Power Probe for that, but it's a $100+ tool that most non-professionals might use once or twice a year. A DVOM is better if you already have one.

The particular ground you are interested in is #200 per the Ford wiring diagrams. It is located "behind the instrument panel, to the left of the steering column" and grounds a veritable shit-ton of other things like the blower switch, all your rear lights, the dome light, and the buzzer that lets you know your headlights are on while the door is open. So if any of those things work, if your problem is the ground, then it is probably a chewed up wire, not a loose connector.

There is also a connector (C118) that is on the LF fender apron. It is in a bundle of 5, and should roughly be the middle one. I'd go try to figure out more details about it on my own truck for you, but it's 3 AM, can't see what I'm doing.

As for the rest of that. I'm not sure, but someone else will be along who does know, eventually.

 

[feellnfroggy]

Gotta pull the bed to do a visual on the pump first, (if diagnostics dont work) I have a fuel pump where the wires were eaten away and the fuel was allowing them to short.

 

[greaseyfingers]

Lots of good information guys.

I'll have to check all of these things out and try to determine where I can find the Code 95 - Fuel Pump Secondary Circuit Failure at, when I can find some time to work on it, again.

In the meantime, Thanks a lot to everyone for your help.

If I happen to find the in tank fuel pump needs replacing.

Would it be better to replace it with a high pressure pump and sending unit from a 89 - 92 Ranger or Bronco two, if it will fit?

I think they only used the one high pressure pump in their fuel tank, instead of using two fuel pumps like my 87 Ranger, 2.9, has.

Does anybody have a good high pressure pump and sending unit from a 89 - 92 Ranger or Bronco two, that they'd like to sell cheap?

Or, do you think I'd be better off using the same low pressure, in tank, fuel pump and sending unit that fits a 87 Ranger, instead?

And, if so, does anybody have a good one that they would be willing cheap?

 

[NMB2]

when my in tank pump died on my B2 it would cause it to die after driving it for awhile... Cooling down is what made it start again.