20 Most Recent 1998 Ford Explorer - Page 3 Questions & Answers

It is going to be practically impossible to diagnose the noise without hearing it and hearing where the noise originates. Take it to a shop (or two ? ) and get their opinion. I say 'or two' because some shops see a woman and say 'ka-ching.'

Try spraying carb/throttle body cleaner around the throttle body after the truck is warmed up all the way get someone to sit in the truck with it in drive and there foot on the brake if the idle raises there's a vacuum line leaking or your throttle body gasket is leaking if no increase in idle then thoroughly clean out the throttle body with the spray if it's very dirty inside the varnish from the fuel burning is causing the throttle plate to stick or stay open causing your engine to have increased rpms if your using no name brand gas stop now your killing your motor the major brands have detergents in the gas to keep things clean and better mpgs brands like usa Valero speedway delta liberty are all garbage and should only be used in an emergency situation like you're going to run out also if you are using this junk get 2 cans of Berrimans fuel system cleaner and put it in the gas tank every week for a month or so this will clean out the emissions and gas tank of the dirt and varnish from bad cheap gas I say 2 at a time because the super strength is needed to clean out the gunk and keep using it at least 1 can a month with good higher grade fuel 93 octane for about 2 months after then either stay at 93 or go to 91 or 89 not 87 ///// now the reason for the higher octane fuel is this the higher the octane level the slower the fuel burns and cleaner more efficient burning with the cleaner combination to get out the gunk your truck will run much better and mpgs will increase now post back with progress write down everything you've done and we will take it from there if the problem persists but I don't think so I'm a taxi mechanic in nyc.with 50 years experience so that's where the information is coming from and a lot of the cars have 300,000 to 450,000 miles on them so I would say you should listen to this advice they are ford crown Victorias and are original motors good luck stephen

I'm assuming you have Transfer Case -Automatic Four Wheel Drive (A4WD) An not Transfer Case -All-Wheel Drive (AWD) Two different system's . The automatic system is electroniclly controlled . When it has electrical problems it set DTC'S - diagnostic trouble code's in the 4X4 control module . Before replacing part's or trying this an trying that , having the vehicle checked for DTC'S is always the first step in any diagnostic's with these vehicles . Then if not familiar with this system read factroy service repair information . Trying to fix not knowing what your doing never works . System Function Hall effect sensor monitors input and output shaft speed. In the A4WD (C-Trac) system, the GEM varies the torque sent to the front driveline by controlling the transfer case clutch. At rest and under cruising conditions, the GEM activates the transfer case clutch a minimum duty cycle (percentage of time the clutch is turned on), which allows for the slight difference between the front and rear driveshafts which normally occurs when negotiating a corner on dry pavement. Under any of the following conditions, the GEM will increase the duty cycle in order to prevent or control slip:

• Slip is detected (by using the Hall Effect Sensors)
• Heavy acceleration (throttle position).

Feature inputs:

• Brake ON/OFF switch.
• 4WD mode switch.
• Digital transmission range sensor.
• Clutch switch (manual transmission vehicles only).
• Vehicle speed signal (transmitted from the ABS module).
• Front/rear driveshaft speed sensors.
• Throttle position information from the PCM.
• Contact plate position inputs A, B, C, D.

Feature outputs:

• Solid state clutch relay (pulse width modulated signal: grounded when relay is on, battery potential when relay is off).
• A4WD indicator (ground when activated, open circuit when deactivated).
• 4x4 shift motor relay outputs.

Shifts between A4WD and 4x4 HIGH can be made at any speed. Listed below are the inputs and outputs needed by the GEM to execute a change between any of these modes. Feature inputs:

• Front/rear driveshaft speed sensor.
• Vehicle speed signal.
• Throttle position information.
• 4WD mode switch.

Feature outputs:

• Solid state clutch relay (pulse width modulated signal; grounded when relay is on, battery potential when relay is off).
• 4x4 HIGH cluster indicator (ground when activated, open circuit when deactivated).

When shifting into or out of LOW range, the GEM requires that the vehicle speed is less than 5 km/h (3 mph), the brake is applied, and the transmission is in NEUTRAL. Feature inputs:

• Throttle position information.
• 4WD mode switch.
• Contact plate position inputs A, B, C, D.
• Vehicle speed signal (transmitted from ABS module).
• Brake ON/OFF switch input (battery voltage when brake is depressed, open circuit when not activated).
• Digital transmission range sensor (ground when transmission is in NEUTRAL, open circuit otherwise).
• Start/clutch depressed input (manual transmission only).

Feature outputs:

• 4x4 shift motor relay outputs.
• 4LOW cluster indicators (ground when activated, open circuit when deactivated).
• Solid state clutch relay (pulse width modulated signal; grounded when relay is on, battery potential when relay is off).
• The GEM they talk about is a generic electronic control module .
• Do you know what DTC'S are ?
• P1763 Transmission Neutral In Tow Indicator Circuit Short to Battery GEM REFER to Section 413-09 . P1764 Transmission Neutral In Tow Indicator Circuit Fault GEM REFER to Section 413-09 . P1804 4WD High Indicator Circuit Failure GEM GO to Pinpoint Test C . P1806 4WD High Indicator Short to Battery GEM GO to Pinpoint Test C . P1808 4WD Low Indicator Circuit Failure GEM GO to Pinpoint Test C . P1810 4WD Low Indicator Short Circuit to Battery GEM GO to Pinpoint Test C . P1812 4WD Mode Select Circuit Failure GEM GO to Symptom Chart. P1815 4WD Mode Select Short Circuit to Ground GEM GO to Symptom Chart. P1820 Transfer Case CW Shift Relay Coil Circuit Open or Short to Ground GEM GO to Pinpoint Test B . P1822 Transfer Case CW Shift Relay Coil Short to Battery GEM GO to Pinpoint Test B . P1824 4WD Electric Clutch Relay Circuit Failure GEM GO to Pinpoint Test A . P1826 4WD Electric Clutch Relay Short to Battery GEM GO to Pinpoint Test A . P1828 Transfer Case CCW Shift Relay Circuit Failure GEM GO to Pinpoint Test B . P1830 Transfer Case CCW Shift Relay Coil Short to Battery GEM GO to Pinpoint Test B . P1836 Transfer Case Front Shaft Speed Sensor Circuit Failure GEM GO to Symptom Chart. P1837 Transfer Case Rear Shaft Speed Sensor Circuit Failure GEM GO to Symptom Chart. P1838 Transfer Case Shift Motor Circuit Failure GEM GO to Pinpoint Test B . P1846 Transfer Case CONTACT PLATE "A" Circuit Failure GEM GO to Pinpoint Test B . P1850 Transfer Case CONTACT PLATE "B" Circuit Failure GEM GO to Pinpoint Test B . P1854 Transfer Case CONTACT PLATE "C" Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1858 Transfer Case CONTACT PLATE "D" Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1866 Transfer Case Maintenance Required (GEM Only) (4-wheel drive operation can be restored by clearing the DTC and cycling the ignition.) GEM GO to Pinpoint Test B . P1867 Transfer Case Contact Plate General Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1874 Automatic Hall Effect Sensor Power Circuit Failure GEM GO to Symptom Chart. P1875 Automatic Hall Effect Sensor Power Circuit Short to Battery (GEM Only) GEM GO to Symptom Chart. P1891 Transfer Case Contact Plate Ground Return Open Circuit GEM GO to Pinpoint Test B .
• Your best bet , have it towed to a qualified repair shop . You have not the knoweldge or diagnostic equipment to fix it.

When you turn the key to start, the PCM provides ground to the control coil side of the fuel pump relay to close the contacts to provide a 2-second prime. When you turn to start, it fully grounds the control coil and the contacts provide power to the pump. Swap the fuel pump relay with another relay of the same size and type and see if that helps. If it doesn't you've got a wiring issue and it's usually an intermittent ground. The ground for the fuel pump relay is behind the left front kick panel near driver's left foot

alternator drive belt problem bad battery terminals voltage regulator failure loose charge wire connections dead battery

If lights are on, trouble codes are stored. Get he codes read. That's always the starting point.

1991 ford 150 pick up steering column actuator Google Search 1991 ford 150 pick up steering column actuator Google Search

It's possible the light bulb has a bad filament or connection. If the transmission doesn't seem to be shifting in and out of overdrive while you're driving then chances are its the bulb or connection.

You just go to the link I attached I'm sure you will get the solution of your problem 1998 Ford Explorer Workshop Repair Service Manual PDF Download

Put key in IGN and turn to run. All warning lights should come on, including the check engine light. Then turn the key to crank. As the engine cranks and the crankshaft position sensor detects rotation and reports it to the PCM, the check engine light should go out. If it stays on, the PCM isn't getting input from the crankshaft postion sensor. Check the connection or replace the sensor.

The blend door isn't working. Look for a disconnected vacuum line under the hood.

it s a long shot, but put the explorer on jack stands start engine, put in neutral GENTLy tap on shift gear on transfer case while someone is pushing handle into high. tap gas to change RPM s while working it. put into drive and do the same but put transfer case into neutral, if goes into neutral stop and put transmission into neutral than put transfer case into high. keep in mind if it works don t take it out, or you will be doing all this again. have had shift cables break have someone shift while you try to change lever position. Might be worth having it checked , transfer case is not a transmission. senser, computer, fuses, solenoid relays are just some easy fixes for this problem..

you need the repair manual to fix your problem you can solve the problem your self so go to the given link to get the manual http://toolsnyou.com/ this link is very safe and helpful

And what fault codes prompted you to replace these parts you listed? You never mention fuel pressure readings under a load, how about excessive exhaust system back pressure? Has the transmission been scanned for fault codes?

Spun bearing on the crank is the worst case. But first check the flex plate to torque converter bolts and make sure they are not backing out. Also drop the starter and make sure you can't pull the gear out by hand. It may be stuck out on the flywheel.

definitely sounds like a ball joint problem, bushings would not cause it to chew up tires a worn moving mechanical part would such as steering components,wheel bearings,ball joints, and believe it or not shock absorbers

distributor got a problem

:) Make sure the power steering fluid reservoir is full.. Lucas Oil Power steering fluid with conditioners 10442 Read Reviews on... Lucas Oil Power steering stop leak 10011 Read Reviews on Lucas Oil 10011 There is a lot to diagnose and check,, MORE than can be done on here... Has the vehicle ever been wrecked in the back?? Make sure the tail light sockets are clean and hold the bulbs tight,,make sure all the connections are tight...especially going into the light bulb sockets.. .. reply on here to me.... if this helps, please mark as helpful..thanks.. and good luck,,