fuel pump issue?

[Terry]

I have an 86 ext ranger. I gave me some trouble and had to change thr FPR and the egr solenoid. My FPR did not leak at all. I put a pressure gage on it. I would start it up and after twenty seconds or so, it would peg the gage. That all fixed ever thou I still get a 33. The truck is running pretty good excepth for the new issue. In the past few weeks I would be driving down the road and the truck dies like its out of gas. This weekend it happened and I would not start until it was setting for a bit then it started and has been running fine. It put my tester and book in my truck for when/if it happens again as well as my fuel pressure gage. For the record my truck has a filter in the canister before the high pressure pump as well as one past the pump on the frame. I have changed the back one but did not mess with the one up front.

Terry

 

[IMenriched]

I have an 86 ext ranger. I gave me some trouble and had to change thr FPR and the egr solenoid. My FPR did not leak at all. I put a pressure gage on it. I would start it up and after twenty seconds or so, it would peg the gage. That all fixed ever thou I still get a 33. The truck is running pretty good excepth for the new issue. In the past few weeks I would be driving down the road and the truck dies like its out of gas. This weekend it happened and I would not start until it was setting for a bit then it started and has been running fine. It put my tester and book in my truck for when/if it happens again as well as my fuel pressure gage. For the record my truck has a filter in the canister before the high pressure pump as well as one past the pump on the frame. I have changed the back one but did not mess with the one up front.

Terry

33psi for fuel pressure is good...if you get it running and goose the throttle with fuel pressure gage on it, it should bounce around abit but restablize after a second or 3.

now for the dieing /stalling
NO it couldn't hurt to replace the fuel filter and the canister filter (located rear of the tranny on the DS frame rail) ,maybe the only one BTW.

also check the TFI, or AKA ignition module.

does this restart everytime right away or does it have to sit for a bit, then restart??

 

[Terry]

I have given you bad information the 33 is the error for my EGR. There is two filters and I replaced the canister on but not the one after the high pressure pump. It does not re-start it tries to start but want run. I took a paperclip and pushed the shrader valve and almost no fuel came out. After a few the truck started and ran fine?

 

[Bondo]

Sounds like the same thing the 88 4wd Ranger I just picked up is doing. Mine only runs for 2-3 minutes before it dies out though.

I'll be reading your progress with this issue so I can tinker with mine. (once I get the 87 2wd done that is) LOL

 

[IMenriched]

I have given you bad information the 33 is the error for my EGR. There is two filters and I replaced the canister on but not the one after the high pressure pump. It does not re-start it tries to start but want run. I took a paperclip and pushed the shrader valve and almost no fuel came out. After a few the truck started and ran fine?

If your certain you have 2 filters then by all means replace them both.
you could have just had a air pocket/airlock in the fuel line, by pressing the shrader valve you released it and allowed fuel to pass, then allowing it to start.


A quick way to check the intank pump, you'll need a buddy to turn the key to just the on postion again, while you hold your hand on the gas tank. you should be able to fell it vibrate as it primes.

have you tried to getting fuel pressure checked??

does it still die intermittanty??

and if it doesn't restart right away...but restarts say 20-30min later.....then it could be the TFI (aka ignition module), this TFI does have fuel pump control as well. This TFI tends to over heat and short circuit inside itself, cutting off power to the fuel pumps. classic TFI symtoms

 

[Bondo]

Im not sure if that (TFI) is my problem IMenriched, mine starts back up after just a few minutes. (It only takes 3-4 minutes to slowly die out) I was thinking fuel filter, but I havent tinkered on that truck yet and I dont want to hyjack Terry's thread.

The vacuum line on my FPR is pretty loose fitting too though.....

 

[Terry]

This problem has happend two times in the last month. The temp outside was hot but my aftermarket temp gage was around 190. There was a related topic posted at the bottom of this thread and they were trying to point to the pump relay. It seems that a relay should either work or not? I have my code tester as well as my fuel pressure test gage for if or when the problrm happens again. The fuel pressure runs around 35 psi with the new FPR. How can I test the TFI if the problem does not happen all the time? What is the AKA module?

 

[IMenriched]

Im not sure if that (TFI) is my problem IMenriched, mine starts back up after just a few minutes. (It only takes 3-4 minutes to slowly die out) I was thinking fuel filter, but I havent tinkered on that truck yet and I dont want to hyjack Terry's thread.

The vacuum line on my FPR is pretty loose fitting too though.....

Bondo...no worries, everyone here is just'n try to help.
It always amazes me how folks with 2 seemingly "same symtoms" can have different solutions. But that is just some of the joys of the internet...unless you get these two units side by side and look at them....kick the tires and so on. you just can never tell.

If you haven't yet changed the fuel filter....then yes, do so. and yes vacuum leaks can be a real issue too.

Have you tied to pull the little vacuum line off the FPR (fuel pressure regulater)?? and see if fuel dribbes out it....if it does then the FPR is shot.

 

[Bondo]

The little FPR vacuum line is so loose/stretched it practically falls off IM. No gas leaks out though. I was going to twist a wire bread tie around it to cinch it up just for shits and giggles to see if it makes a difference.

Luckily I do have 2 donor trucks to snag pieces off of if need be. (86 Bronco II - 87 Ranger 2wd)

Thanks for your replies.

 

[Terry]

The truck is getting worse. I was going to hot august nights in the morning but the truck needs me. I now cuts out and back on just enough so you can feel it. The shifting seems to be acting up as well. Im starting to think vacuum?

 

[gnelson21]

87 ranger

i have a couple ?s

 

[Terry]

Ask away, Im at work so I wont reply until noon and it is 9:45 now

 

[Earl43P]

I suggest you inspect the vaccum line to the transmission modulator then. It could be the root of your problem. You could also start capping off vaccum lines at the distibution tree to see if you can isolate it to one vaccum circuit, then try the brake booster line, and really inspect the PCV lines too.

Bondo, you should fix the FPR vaccum line.

 

[Bondo]

Yeah Earl, I will get going on the issues with the 88 4wd pretty soon. (I hope) Im trying to solve a badly rich problem with my 87 2wd right now. (and find good 14" tires with some meat)

Im going to take more time/pains with the 4wd because it will be my preferred truck, and the 2wd will be mostly to run back and forth to work.

I bought 3 trucks in a span of 3 weeks and tripled my workload. LOL

 

[Terry]

Bondo,
My truck did not leak fuel from the FPR but if yu put a gage on it it would run between 30 and 35 psi and then peg the gage. Im thinking that if I have issues with both the fuel system and shifting I must have a vacuum issue?