Home Ford Ranger Forum Builders Guide How To Tech Other Articles Featured Rangers Readers Rangers Classifieds Shirts & Decals

 
Old 08-07-2015, 10:24 AM   #1
2trux
Premium Member
 
Join Date: Oct 2014
Location: Albuquerque NM
Posts: 137
Vehicle Year: 1989
Vehicle Make: Ranger
Vehicle Model: Extended cab XLT
I use this vehicle for: A bank. I put in money.
Rep Power: 8
2trux is on a distinguished road
Default Fuel pressure issue

Lately I have been having issues with slight missing while on the highway. Yesterday after stopping for the light on the off ramp the idle became very rough and the engine died. It restarted after about 30 sec. At the next stop it died again. When I got home I put the fuel pressure tester on. When I turn the key the pressure jumps to 30 psi. After starting the pressure drops to 20 psi and the idle gets rough and the engine soon dies.
Does this sound like it could just be a clogged filter, or would you think it's the fuel pump, or possibly the regulator. I ordered a filter and new pump but would prefer to not install the pump if not needed.

Thanks
__________________
89 Ranger XLT EC 2.9 V6 4X4
97 Expedition EB 5.4 V8 4X4
05 Explorer Limited 4.6 V8 4X4
2trux is offline   Reply With Quote
Advertisement - Don't want to see the forum ads? Click HERE to find out how to be a Premium Member.


5% Rock Auto Discount Code: 20B2FF503DCF74 Expires: September 28, 2018
Old 08-07-2015, 12:43 PM   #2
enjr44
Member
 
enjr44's Avatar
 
Join Date: Mar 2013
Location: Renton, WA
Posts: 1,132
Vehicle Year: 02 2X4; 08 FX4
Vehicle Make: Ford
Vehicle Model: Rangers
I use this vehicle for: Gdaughter/DDriver
Rep Power: 15
enjr44 has a spectacular aura aboutenjr44 has a spectacular aura aboutenjr44 has a spectacular aura about
Default

Well, I guess my first thought is, "Who knows!" I'd install the filter and see what happens.
enjr44 is offline   Reply With Quote
Old 08-11-2015, 09:29 AM   #3
2trux
Premium Member
 
Join Date: Oct 2014
Location: Albuquerque NM
Posts: 137
Vehicle Year: 1989
Vehicle Make: Ranger
Vehicle Model: Extended cab XLT
I use this vehicle for: A bank. I put in money.
Rep Power: 8
2trux is on a distinguished road
Default

Well I drove it again before replacing the filter and the fuel pressure was 36psi. I have replaced the filter and have not had any other problems yet, I'll see what happens when I head home from work today. This seems to be when it normally has problems.
__________________
89 Ranger XLT EC 2.9 V6 4X4
97 Expedition EB 5.4 V8 4X4
05 Explorer Limited 4.6 V8 4X4
2trux is offline   Reply With Quote
Old 08-13-2015, 11:14 AM   #4
2trux
Premium Member
 
Join Date: Oct 2014
Location: Albuquerque NM
Posts: 137
Vehicle Year: 1989
Vehicle Make: Ranger
Vehicle Model: Extended cab XLT
I use this vehicle for: A bank. I put in money.
Rep Power: 8
2trux is on a distinguished road
Default

Well it doesn't look like the filter solved the problem. The problem seems to appear after driving it than shutting down and restarting after a short time. The fuel pressure at idle was dropping below 20 psi then the engine would die. What was interesting was as long as I was driving it seemed to run OK but when I got to a light the engine would stumble and die. When the light turned green I would restart and it would get me to the next light.
This morning it ran perfect as I came to work.
I don't know if this is related but often I have high engine speeds when I expect idle. Example: as I am approaching a red light I put it in neutral to coast up to the light and the RPM stays at 1800 until I stop then it drops back to a normal idle.
I will replace the pump this weekend and see if anything changes.
__________________
89 Ranger XLT EC 2.9 V6 4X4
97 Expedition EB 5.4 V8 4X4
05 Explorer Limited 4.6 V8 4X4
2trux is offline   Reply With Quote
Old 08-19-2015, 03:51 AM   #5
dave2575
Member
 
Join Date: Dec 2010
Location: Bay Area, Nor Cal
Posts: 248
Vehicle Year: mostly 88
Vehicle Make: ford
Vehicle Model: ranger xlt
I use this vehicle for: Transportation, duh!
My credo: "BIGGER HAMMER!"
Rep Power: 16
dave2575 is on a distinguished road
Default

I have an 88 XLT with dual tanks and mine did the same thing a while ago. I started (just like you are) by doing the easy/cheap things first. Make sure you have enough gas, if you can start it.. let it get warm and then inspect your system for leaks then turn it off. Make sure you have a good seal on the gas cap. Then it doesn't hurt to check for any codes, pull the vacuum hose off the regulator and smell/look for gas, replace regulator if gas is present in the hose, replace Filters, could be 1 to 4 filters depending on your fuel system(my dual tank came with 4 filters). And then you get into the not so easy/cheap things. Do the inline HP pump first, then do the in-tank pump/filter assembly. My truck had a bad in-tank pump/filter assy.. NO FUN! I hope thats not the case for you. good luck
dave2575 is offline   Reply With Quote
Old 08-19-2015, 03:02 PM   #6
2trux
Premium Member
 
Join Date: Oct 2014
Location: Albuquerque NM
Posts: 137
Vehicle Year: 1989
Vehicle Make: Ranger
Vehicle Model: Extended cab XLT
I use this vehicle for: A bank. I put in money.
Rep Power: 8
2trux is on a distinguished road
Default

I pulled the bed and replaced the pump last weekend. This was actually easier than I thought it would be. (It also gave me a chance to pressure wash the mud off the top of my frame.)
I had previously replaced the filter (under the cab) which didn't help.
After the pump replacement I haven't had any problems so it may have resolved the issue. I have checked the regulator before and there was no gas, I will check it again as I sometimes get high idle issues.
From what I can see there is only 1 external filter and only the in-tank pump. The running pressure went from 36 up to 40 psi at idle with the new pump.
__________________
89 Ranger XLT EC 2.9 V6 4X4
97 Expedition EB 5.4 V8 4X4
05 Explorer Limited 4.6 V8 4X4
2trux is offline   Reply With Quote
Old 08-20-2015, 05:17 AM   #7
dave2575
Member
 
Join Date: Dec 2010
Location: Bay Area, Nor Cal
Posts: 248
Vehicle Year: mostly 88
Vehicle Make: ford
Vehicle Model: ranger xlt
I use this vehicle for: Transportation, duh!
My credo: "BIGGER HAMMER!"
Rep Power: 16
dave2575 is on a distinguished road
Default

Sounds like you got it. Congrats
dave2575 is offline   Reply With Quote
Old 08-20-2015, 11:50 AM   #8
enjr44
Member
 
enjr44's Avatar
 
Join Date: Mar 2013
Location: Renton, WA
Posts: 1,132
Vehicle Year: 02 2X4; 08 FX4
Vehicle Make: Ford
Vehicle Model: Rangers
I use this vehicle for: Gdaughter/DDriver
Rep Power: 15
enjr44 has a spectacular aura aboutenjr44 has a spectacular aura aboutenjr44 has a spectacular aura about
Default

I could be wrong (very likely, LOL); but, the high rpms when coasting sounds normal. I think it is a computer software thing....
enjr44 is offline   Reply With Quote
Old 08-21-2015, 10:54 PM   #9
dave2575
Member
 
Join Date: Dec 2010
Location: Bay Area, Nor Cal
Posts: 248
Vehicle Year: mostly 88
Vehicle Make: ford
Vehicle Model: ranger xlt
I use this vehicle for: Transportation, duh!
My credo: "BIGGER HAMMER!"
Rep Power: 16
dave2575 is on a distinguished road
Default

I know mine has always idled high. When I start it in the morning the rpm's will stay at 1.5K untill it warms up then it will drop to around 1K, and It wont drop down to its normal 800 rpm idle tell its in gear. It s a good thing I have dual tanks lol
dave2575 is offline   Reply With Quote
Reply

Bookmarks





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




All times are GMT -5. The time now is 05:18 PM.




1999-2018 / 959 Media LLC / All Rights Reserved