2.9 will not take the gas

RonD said:

Any gas or even the smell of gas in the FPRs vacuum line would mean "replace it".
Only way for gas to get there is thru cracked FPR diaphragm

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So I replaced the FPR and it ran really well for all of about 2 miles then it died right out on me again.

I guess now Im looking at a fuel pump? What is the best way to go about this?

Fuel pump tested at 32psi running which is OK, and with bad FPR to boot, so I wouldn't go there just yet.

'89 2.9l should be using a MAP(manifold absolute pressure) sensor to adjust fuel mix.
The MAP sensor should be on the firewall passenger side toward the center, often behind main wiring harness.
It is small, maybe 2"x2", it will have an electrical connector and a Vacuum hose.
Check that vacuum hose, remove it if needed, and make sure it is air tight.
MAP sensor tells computer the current vacuum in the intake, when you open the throttle the vacuum will go down, MAP/computer sees this and increases fuel based on load.
MAP sensors rarely fail, vacuum hose does
TPS(throttle position sensor) is also part of that increase in fuel as throttle opens.

TFI ignition system can also cause bogging.
When you want to accelerate the spark timing must be advanced to maintain power.
The TFI has a SPOUT(spark out) connector(jumper) that is removed when setting up the base timing(adjusting distributor).
If this has fallen out or pulled out then you may not have spark advance working correctly.
It is usually a 2 wire connector with a gray plastic insert, pull out the insert and put it back in.
Picture of SPOUT connector here: http://www.fordrangerforum.com/2-9-liter-tech/93749-1988-ranger-timing.html
Could have a Black base as well

General info and testing TFI system is here: http://www.therangerstation.com/tech_library/TFI_Diagnostic.shtml

RonD said:

Fuel pump tested at 32psi running which is OK so I wouldn't go there just yet.

'89 2.9l should be using a MAP sensor to adjust fuel mix.
The MAP sensor should be on the firewall passenger side toward the center, often behind main wiring harness.
It is small, maybe 2"x2", it will have an electrical connector and a Vacuum hose.
Check that vacuum hose, remove it if needed, and make sure it is air tight.
MAP sensor tells computer the current vacuum in the intake, when you open the throttle the vacuum will go down, MAP/computer sees this and increases fuel based on load.
MAP sensors rarely fail, vacuum hose does
TPS(throttle position sensor) is also part of that increase in fuel as throttle opens.

TFI ignition system can also cause bogging.
When you want to accelerate the spark timing must be advanced to maintain power.
The TFI has a SPOUT(spark out) connector(jumper) that is removed when setting up the base timing(adjusting distributor).
If this has fallen out or pulled out then you may not have spark advance working correctly.
It is usually a 2 wire connector with a gray plastic insert, pull out the insert and put it back in.
Picture of SPOUT connector here: http://www.fordrangerforum.com/2-9-liter-tech/93749-1988-ranger-timing.html
Could have a Black base as well

Click to expand...

Thank you very much. As soon as we get a break in the rain I will get to work.

By what you have said im guessing that fuel pumps aren't often intermittent?

No, never ran into that, fuel pump relay can do that, and computer might do that.

You could try banging on the inertia switch and see if engine stalls, would be a longshot though

RonD said:

No, never ran into that, fuel pump relay can do that, and computer might do that.

You could try banging on the inertia switch and see if engine stalls, would be a longshot though

Click to expand...

Ill see what I can do. If a longshot didnt work some of the time they wouldnt have a word for it though.