Question about 1999 Ford Explorer

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I have a 1999 ford explorer with returnless fuel system this vehicle runs so rich with in 3 min. of running will foul plugs tech line told me that 65 psi of fuel pressure is with in spec but my all data say 40-65psi wondering if I should see 65 at idle. Vehicle also has very rough idle like high lift camshaft was installed. Please Help Me.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Ford Escape 3L 2002 Rough idle

generally, when the engine is washed, water gets trapped behind the spark unit and stays there, creating a shorting path for spark plug current. best to dis-mount the spark unit (follow plug wires back to source) and dry and clean it thoroughly.

Posted on Jul 07, 2008

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SOURCE: My 1999 Ford Explorer will

did u let all thae air out of the fuel rail

Posted on Jan 25, 2009

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SOURCE: 1993 Ford Explorer idles rough when engine is warm

you might want to check your fuel injectors or your O2 sensors there are 2 of them 1 on each side of the block located on the pipes coming from the exhaust manifold

Posted on Apr 21, 2009

jigsaw_9077
  • 308 Answers

SOURCE: I have replaced the fuel pump on this 92 Ford

The mechanic should check on the idle .Because the Idle of the truck is adjusting by it self . That causes the truck to stop .check the Idle then lock it up to so that it will not adjust until it will make the truck stop .the main reason why the truck stop and pressure guage going down steadily is that no fuel enters the fuel pump when it adjust Idle by it self . It adjust by closing way or blocking the fuel to pass and go to the engine.then the engine dies .

Posted on Aug 22, 2009

Testimonial: "Thank you, jigsaw 9077"

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SOURCE: 94 toyota land cruiser runs rich, rough idle, no power

You have a fuel injected car. Things that can cause too rich would be a bad altitude sensor like the map or mass air flow depending on which one you have.
Anything that would cause excess air to go into the exhaust system like a cracked exhaust pipe before the 02 sensor, or low compression, or a stuck open pcv valve, intake gaskets, throttle body base gasket.
Or a Throttle position sensor which is telling the computer you foot is on the gas when it is not.
Its possible you have a bad PCM,, or coolant temp sensor saying the motor is still cold as its warming up.
Its possible you have a vacuum hose somewhere on the engine with a big crack in it or its just inplugged and you dont see it.

But my first guess would be possibly a bad computer.
Try creating a big vacuum leak when its loading up. It should run better.

Also if you have an egr valve it could be stuck open a little causing excess air or an idle air control valve stuck open.

Does it clean up if you rev it up or does it blow black smoke reved and at idle. This could point towards the altitude sensor.

Posted on Dec 22, 2009

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02 ford focus flooding so no start. I pull fuse an it will eventually start. But runs outta gas. Driver fuel module. Under seat?


Driver fuel module ???? Under the back seat ? The part your calling a driver fuel module is the fuel pump driver module ! What fuse do you pull ? If you would like help you need to go into more details . Your vehicle has electronic returnless fuel system (computer controlled ) Having the vehicle checked for DTC'S - diagnostic trouble codes could shed some light on to the problem . There is a fuel pressure sensor on the fuel injector fuel rail ,this is a input to the PCM engine computer .The PCM talks to the FPDM -fuel pump driver module to speed up or slow down the fuel pump .
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Jul 28, 2017 | Ford Cars & Trucks

1 Answer

97 ford explorer fuel pump pressure regulator


Usually if cranks good but won't start, you have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and check fuel injector pulse. I don't know what testing you have done?
As far as the fuel regulator, it depends? If there is a return line, the pressure regulator should be on the fuel rail. If no return line, with mechanical returnless, the regulator may be in a loop close to gas tank. With electronic returnless, everything is in the gas tank. Sorry, I haven't found any pictures?

Jun 26, 2017 | Ford Cars & Trucks

1 Answer

Fuel pump problem on a 2006 e350 5.4l


What kind of problem ? Suggest you watch this video on ford electronic returnless fuel system . These system have known problems with the fuel pump driver module . Depending on where it is located on the vehicle . Expeditions had them under the vehicle mounted to the frame and they had corrsion problems . Google ford fuel pump driver modules . Ford Electronic Returnless Fuel System Diagnosis Part 1 Ford

Dec 20, 2016 | Cars & Trucks

1 Answer

I have explorer 2006 fuel pump doesn't work although it is new i want adiagram for its electric sircut


Did you test or just replace it ? There is a fuel pump driver module that controls the pump , an the PCM tells how much fuel to pump by a sensor on the fuel rail ! the fuel rail pressure sensor ! Your vehicle has Ford Electronic Returnless Fuel System ! watch this guy on testing Ford Electronic Returnless Fuel System Diagnosis Part 1 Ford Electronic Returnless Fuel System Diagnosis Part 2

did you check Inertia Fuel Shutoff (IFS) Switch The IFS switch is used in conjunction with the electric fuel pump. The purpose of the IFS switch is to shutoff the fuel pump if a collision occurs. It consists of a steel ball held in place by a magnet. When a sharp impact occurs, the ball breaks loose from the magnet, rolls up a conical ramp and strikes a target plate which opens the electrical contacts of the switch and shuts off the electric fuel pump. Once the switch is open, it must be manually reset before restarting the vehicle. Refer to the Owner's Literature for the location of the IFS.
Fuel Pump Driver Module (FPDM) Note: For the LS, the FPDM functions are incorporated in the rear electronic module (REM). The fuel pump operation is the same as for applications using the stand-alone FPDM. However, the REM communicates diagnostic information through the communication link instead of using a fuel pump monitor (FPM) circuit.
Note: The Ford GT uses 2 FPDMs to control fuel for the dual-injection fuel delivery system. The PCM outputs only one fuel pump duty cycle which is used by both pumps. The PCM individually monitors the FPDMs through their fuel pump monitor circuits. Both FPDMs are mounted on the same bracket. The FPDM mounted in the upper position on the bracket is referred to as FPDM and the FPDM mounted in the lower position, is referred to as FPDM2.
The FPDM receives a duty cycle signal from the PCM and controls the fuel pump operation in relation to this duty cycle. This results in variable speed fuel pump operation. The FPDM sends diagnostic information to the PCM on the fuel pump monitor circuit. For additional information on Fuel Pump Control and the Fuel Pump Monitor, refer to Fuel Systems in this section. You need to do some research on line. depending on the location these FPDM corrode an short out ! This vehicle in the video is inside but on some trucks they are underneath the vehicle ! This guy here scanner danner is a automotive teacher an knows he's stuff !

Feb 17, 2015 | 2006 Ford Explorer

3 Answers

Code p731 p732 p172


code p0731 p0732 are internal gear ratio trans. codes and p0172 vehicle running rich can also be caused if vehicle trans. is slipping

Aug 28, 2012 | 2000 Nissan Maxima

5 Answers

An error code of 0457 came up. any idea what that is?


P0457 FORD - EVAP Control System Leak Detected (Fuel Filler Cap Loose/Off)
EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.

Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. The evap system integrity check uses a Fuel Tank Pressure Transducer (FTPT), a Canister Vent Solenoid (CVS) and Fuel Level Input (FLI) along with the Vapor Management Valve (VMV) or Electric Vapor Management Valve (EVMV) to find 0.040" diameter or larger evap system leaks. Federal vehicles can utilize a 0.040" leak check rather than the 0.020" leak check required for California vehicles (click over pic for zoom).

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Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors

Possible causes:
- Missing fuel filler cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap

Possible solution:
- Retight or replaced fuel tank filler cap

Tech notes:
It is a very common problem with Ford vehicles. There are service bulletins for the following vehciles:
1997-2000 Ford CONTOUR
1997-2002 Ford ESCORT
1997-2003 Ford CROWN VICTORIA, MUSTANG, TAURUS
1998-2003 Ford ESCORT ZX2
2000-2003 Ford FOCUS
2002-2003 Ford THUNDERBIRD
1997 F-250 Ford HD
1997-1999 Ford Ford F-250 LD
1997-2003 Ford E SERIES, EXPEDITION, EXPLORER, F-150, RANGER, WINDSTAR
1999-2003 Ford F SUPER DUTY
2000-2003 Ford EXCURSION
2001-2003 Ford ESCAPE, EXPLORER SPORT TRAC, EXPLORER SPORT

Also, in this link could check this Ford Bulletin.

Hope helps (remember to rate and comment this answer).

Apr 12, 2011 | 1999 Ford Explorer

2 Answers

1999 ford ranger 4x4 4.0L motor is skipping replaced camshaft sensor,crankshaft sensor,new coil pack,new plugs,wires,and replaced mass air flow sensor,now its still skipping and codes pulled are showing...


P1151 means a lean bank 2 O2 sensor
P1152 Means a rich bank 2 O2 sensor
P1309 Means miss fire detected
I would check your fuel injector for fouling
When they foul the will develop a drip
Causing a fuel fluctuation that will have O2 sensors reporting rich and lean voltage changes
This causes the pcm to adjust injector pulses making them shorter and longer.
causing more fuel or less fuel.
From this condition you may see plug fouling.
Also check for leaking or faulty fuel pressure regulator or restricted return line.
Most of the time it wont be a bad O2 sensor the O2 sensor is just doing its job.
You also have already changed the plugs and Map so there already out of the way.
If this helps please give me some feed back
Hope this works for you FixYa

Jan 29, 2011 | 1999 Ford Ranger SuperCab

1 Answer

Fuel Filter Changed


What happens when you remove air intake from throttle body & spray a little wd-40 in to the throttle body, and try to start? If it starts and runs temporarily, you've still got a fuel delivery problem.That coffee color worries me, like maybe your fuel lines etc are plugging up with rust etc, from inside tank. Have you added any fuel system cleaner to gas lately?

Aug 30, 2008 | 1999 Ford Explorer

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