fuel pressure

99 Eddie Bauer 4.0 SOHC with almost 220xxx miles. It starts up, runs for awhile, but then dies and doesn't want to start back up. Normally if I let it sit for awhile it will fire back up. It is NOT throwing a check engine light. I have been hearing a rattle from underneath at idle, I thought it...

Keep getting a p0191 code "Fuel Rail Pressure Sensor Circuit Range/Performance" I've replaced the sensor and fuel filter. Fuel trims are where they're supposed to be. 02 sensors are oscillating. I checked as much of the wiring and harnesses as I could access easily and that's all good. I'm...

So my buddy was driving from MI to FL and when he filled up his car he added Fuel injector cleaner and octane boost.... not 100 miles driving he started having some rough driving and now has little to no power when trying to drive. I know what the codes are but before buying parts and jumping to...

Car struggling to start and when Engine runs it seems fine with little vibration at 25 psi of fuel Rail Pressure. If I shutoff the engine, it drops immediately to 8-11 psi and gradually rises to 42 psi. I try to start the engine again FRP drops and engine stalls it won’t start until I wait for...

Greetings all! Several years back, replaced fuel pump, all was well. Now a overly detailed history of current situation: late last year, was nearly out of gas and got a few gallons from a station with paper signs saying no gas and tanker was filling their inground tanks. Had no choice due to...

SOHC 97. Fuel pressure regulator is losing vacuum from 10hg to 2.5hg in 7 minutes. Is that normal ? What are specs for fuel pressure? My one runs with 33psi only when idle.

My wife's 2000 Explorer with V6 4.0L has been difficult to start, runs fine once started. We checked it out with a fuel pressure test. The fuel manifold pressure read at 0 when first connecting the gauge with engine off. When starting the pressure holds at 0 then jumps to 65psi once the fuel...

Hello, I just finished replacing my heads and manifolds with headers. Got it all back together went to start it and it started right up. Wouldnt idle but thats nothing new (Probably bad IAC). Normally it will idle after a minute or so of holding the gas to about 1K rms. It did eventually idle...

So I have had a problem with this truck since i bought it. I was getting lean codes, I tried the mass air flow sensor..didnt fix it. I checked for vacuum leaks none. I brought it to a buddy of mines garage and they did a fuel pressure check. When you turn the key it does have pressure...

Hi all, I'm quite new here, so I apologize if I'm not posting on the right place. That begin said, I hope somebody can help me out. The truck is an explorer 98, V6, vin X. I've had this codes since FOREVER, but I finally want to get them fixed. When it comes to drive, the truck is just...

Thanks in advance, we are stumped.. 1992 Explorer 4x4 4.0 OHV Temperature dropped for the first time this winter, below 30 degrees, and she would not start. We are getting zero codes, Key on running or not....nada....zilch.... I checked everything, cleaned the IAC, replaced the IAT, the...

I have a working fuel pump, new fuel filter, new fuel pressure regulator and no pressure at the shraeder valve. I can hear the fuel pump run when I turn on the key (3-5 seconds), but no pressure at the shraeder valve, any ideas? Had been running, started running rough when trying to...

Autozone gave me 4 trouble codes, A week ago it was 2 codes one saying the "ECM has detected a rich or lean air fuel ratio on engine bank two." The other one says. "The computer has detected a rich or lean air fuel ratio on engine bank 1." The truck only starts rough, and idles rough...

2005 Ford Explorer Eddie Bauer Ed. 4.0L SOHC Flex Fuel It all started about 3 months ago when the check engine soon light came on our Explorer. Autozone pulled the code and said it was something in the fuel. The options it gave were Fuel Pressure Sensor, Fuel Pressure Regulator, Fuel...

Read a bunch of threads, and think I have this problem licked. The car has 230K on it and every once in a while it wouldn't start hot. I live in Vegas, so I attributed it to vapor lock. It always started back up in a half hour or so. When running, it was perfect. The other day it got cold...

Hi, i have a 97 Explorer V6 4.0 with the codes for lean banks 1 & 2. Sitting at idle it has sort of a surge or hesitation but has no trouble accelerating. I have only had this Explorer for about 2 months and no issues til now. I did put seafoam in the gas tank when i first bought it and...

I have a 2006 explorer 4.0l. recently had to rebuild the top end of the motor. new headgaskets, and all new o-rings that could be replaced. Now i am havng problems with the fuel system. i keep blowing injector o-rings. the truck runs great until one blows out...i rented a fuel pressure guage...

i have a rough idle, so i checked my fuel pressure and it woudnt hold 30-45 psi when i turn the key, so then i thought it would be the fuel presure regulator. but they are 125 dollars so i thought before i spent that money i would ask a few questions to make sure its not a 25 dollar tps sensor...

I would like to apologize in advance if this post seems excessively long, I just wanted to make sure to cover everything to help get an accurate diagnosis. So I have a 94 Mazda Navajo. Its the exact same thing as a 94 Ford Explorer Sport. The problem that I'm having is that it wont start. This...

Hi, My 88 Ranger SC started giving me problems @ 10 days ago. I have had the same issue in the past but it went away for at least 6 months. It reappeared after our first cold rainy day of fall. Anyway, It will start right up first thing in the morning but is a bear to get started once she...

Having trouble getting my 95 explorer 4.0 start. The starter is firing and the plugs are also firing. I have no pressure at the shrader valve. I changed the fuel filter and while the filter was off i turned the ignition to on position and can hear the pump working yet no fuel comes out of...

Hi everyone! I have been reading this forum for a while, and the exchange of information and maintenance tips has been great. But now I have a problem. “01 XLT 2WD 4.0 SOHC A/T was running fine as usual, parked it at home, then the next AM it would not start. There was No CEL showing...

i need to check the fuel press on my 03 explorer sport. but can't find the testing port under the hood. Any one can give a clue ? thanks

I was changing my fuel pump and when I dropped the tank down I disconnected the 2 fuel lines to the pump and the other line going to this white plastic spout. Now the the electric that goes to the fuel pump tees off and goes to this other black plastic piece(im guessing a sensor). so i tried to...

Here is the layout. 91 Ford Explorer Sport 4X4 auto w/4.0 V-6. Mods are as follows; home made and aftermarket suspension lift totaling 10 3/4" front/10 1/2" rear, 3" body lift, 33X12.50X15 tires on 12X15 rims, headers (Pacesetters-suck-bad fitment), free flow exhaust, kind of catalytic converter...