check engine FORD F650/750 2024 Owner's Guide

ESSENTIAL TOWING CHECKS
See Load limits in the Load Carryingchapter for load specification terms foundon the tire label and Safety Compliancelabel and instructions on calculating yourvehicle's load.
Remember to account for the trailertongue weight as part of your vehicle loadwhen calculating the total vehicle weight.
Hitches
Do not use a hitch that either clamps ontothe bumper or attaches to the axle. Youmust distribute the load in your trailer sothat 10-15% of the total weight of thetrailer is on the tongue.
Safety Chains
Note:Do not attach safety chains to thebumper.
Always connect the safety chains to theframe or hook retainers of your vehiclehitch.
To connect the safety chains, cross thechains under the trailer tongue and allowenough slack for turning tight corners. Donot allow the chains to drag on the ground.
Trailer Brakes
WARNING: Do not connect atrailer's hydraulic brake system directlyto your vehicle's brake system. Yourvehicle may not have enough brakingpower and your chances of having acollision greatly increase.
Electric brakes and manual, automatic orsurge-type trailer brakes are safe if youinstall them properly and adjust them tothe manufacturer's specifications. Thetrailer brakes must meet local and federalregulations.
The rating for the tow vehicle's brakingsystem operation is at the gross vehicleweight rating, not the gross combinedweight rating.
Trailer Lamps
WARNING: Never connect anytrailer lamp wiring to the vehicle's taillamp wiring; this may damage theelectrical system resulting in fire. Contactyour authorized dealer as soon aspossible for assistance in proper trailertow wiring installation. Additionalelectrical equipment may be required.
Trailer lamps are required on most towedvehicles. Make sure all running lights, brakelights, turn signals and hazard lights areworking.
Before Towing a Trailer
Practice turning, stopping and backing upto get the feel of your vehicle-trailercombination before starting on a trip.When turning, make wider turns so thetrailer wheels clear curbs and otherobstacles.
When Towing a Trailer
•Check your hitch, electrical connectionsand trailer wheel lug nuts thoroughlyafter you have traveled 50 mph(80 km/h).
•When stopped in congested or heavytraffic during hot weather, place thetransmission in park (P) or neutral (N)to aid engine and transmission coolingand to help air conditioningperformance.
•Turn off the speed control with heavyloads or in hilly terrain. The speedcontrol may turn off automaticallywhen you are towing on long, steepgrades.
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•Shift to a lower gear when driving downa long or steep hill. Do not apply thebrakes continuously, as they mayoverheat and become less effective.
•If your transmission is equipped withthe Tow/Haul feature, use this featurewhen towing. This provides enginebraking and helps eliminate excessivetransmission shifting for optimum fueleconomy and transmission cooling.
•Allow more distance for stopping witha trailer attached. Anticipate stops andbrake gradually.
FIFTH WHEEL OPERATION (IF
EQUIPPED)
WARNING: Failure to follow thefifth wheel manufacturer’s instructionsfor hooking and unhooking as well assliding the fifth wheel could result in anaccident, personal injury or death.
WARNING: When the tractor andtrailer are parked unattended, the trailerbrake hand control should never be usedto apply the brake, since air may leakfrom the system, allowing vehiclemovement, resulting in possible propertydamage, personal injury or death.
Before hook-up, make sure:
•The fifth wheel jaws are fully open.
•The fifth wheel is fully tilted back toprevent body damage when the tractoris backed under a trailer.
•You block the trailer wheels and adjustand apply the trailer spring brakes.Never chase a trailer.
•The brake hoses and light cords areclear of the fifth wheel.
Hook-up
1.Back the tractor squarely under thetrailer, engaging the fifth-wheel jawson the kingpin. Always back up slowly;make sure the trailer is neither too highnor too low. Avoid backing under thetrailer from an angle.
2.Connect the service and emergencybrake hoses and trailer light connector.
3.Inspect the jaws of the fifth wheel tobe sure they have fully closed on thetrailer kingpin and the trailer plate isresting securely on the fifth wheel.
4.Make sure the coupler release lever isin the locked position.
5.Charge the trailer brake system. Setthe trailer brakes, with either the handvalve or tractor protection valve. Pullagainst the trailer for an extra check ofproper hook-up. Do not pull hardenough to damage or strain theequipment.
6.Set the tractor parking brakes and fullyraise the trailer landing gear.
7.Check the operation of all trailer lightsand correct any lights that may befaulty.
Un-hook
1.Try to keep the tractor and trailer in astraight line.
2.Apply the parking brakes.
3.Lower the trailer landing gear, makingsure it is on solid, level ground. Theweight of the trailer is to be on thelanding gear.
4.Block the trailer wheels.
5.Disconnect the brake hoses and lightcords. Be sure hoses and cords areclear.
6.Pull coupler release lever to disengagethe fifth wheel jaws.
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GENERAL DRIVING POINTS
General Information
•Accelerate smoothly and evenly. Rapidacceleration increases fuelconsumption without increasing engineperformance.
•When approaching a hill, press theaccelerator smoothly to start theincline at full power, and then shiftdown as needed to maintain vehiclespeed.
•When going down a hill, or long steepgrades, prevent overspeeding of theengine. Normally, choose the samegear to descend the hill that you use toascend the hill. The engine governorhas no control over engine speed whenit is being pushed by a loaded vehicle.
•Do not operate in a gear that permitsan engine speed more than themaximum governed speed or high-idleRPM (no load).
•Always shift to a lower gear at highaltitudes to prevent engine smoking.
Backing Up
WARNING: All vehicles have blindspots. To reduce the risk of severe injuryor property damage, never move yourvehicle to the side or rear or change laneswithout being sure your way is clear onboth sides and to your rear.
WARNING: To reduce the risk ofthe possibility of personal injury whilebacking up the vehicle, always be sureyour vehicle’s path is clear.
Before backing up your vehicle, be sure youcan do so safely. If anything behind the cablimits your view, do not rely on mirrorsalone to make sure that your intended pathis clear. If other people are in the vicinity,have someone standing well behind yourvehicle and outside of your intended path(visible through an exterior mirror) guideyou as you back up.
Although OSHA or some governmentalregulations may require the use of anelectrical or mechanical back up alarm towarn bystanders, such an alarm does notguarantee that the intended path is clear.When in doubt, get out of your vehicle andvisually check the intended path is clear.Back up slowly as to allow others time tomove, if necessary.
If you install an electrical back up alarm,connect it to the backup lamp circuit.
Parking
WARNING: When parking yourvehicle, do not leave the transmission ingear; if the key is in the on position andthe vehicle rolls, the engine could start.Failure to follow these instructions couldresult in an unattended vehicle moving,possibly causing personal injury orproperty damage.
Always use the parking brake. Whenparking on a grade, block the wheels andturn the front wheels to one side so that ifyour vehicle rolls, the front tires act againstthe curb to stop your vehicle. The frontwheels are more effective at stopping arolling vehicle than the rear wheels.
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DRIVING THROUGH WATER
WARNING: Do not drive throughflowing or deep water as you may losecontrol of your vehicle.
Note:Driving through standing water cancause vehicle damage.
Note:Engine damage can occur if waterenters the air filter.
Before driving through standing water,check the depth. Never drive through waterthat is higher than the bottom of the wheelhubs.
When driving through standing water, drivevery slowly and do not stop your vehicle.Your brake performance and traction maybe limited. After driving through water andas soon as it is safe to do so:
•Lightly press the brake pedal to dry thebrakes and to check that they work.
•Check that the horn works.
•Check that the exterior lights work.
•Turn the steering wheel to check thatthe steering power assist works.
Operation in Standing Water
Ingestion of water into the diesel enginecan result in immediate and severedamage to the engine. If driving throughwater, slow down to avoid splashing waterinto the intake. If the engine stalls, and yoususpect ingestion of water into the engine,do not try to restart the engine. Consultyour dealer for service immediately.
Your fuel tank vents to the atmosphere byvalves on top of the tank and through thefuel cap. If water reaches the top of thetank, the valves may pull water into thefuel tank. Water in the fuel can causeperformance issues and damage the fuelinjection system.
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This program is separate from the NewVehicle Limited Warranty, but the coverageis concurrent with the powertrain coverageperiod of your vehicle. Canadian roadsidecoverage and benefits may differ from theU.S. coverage. For complete details, seeyour Warranty Guide atwww.ford.com/support/warranty/.
Download the Sykes4Ford RoadsideAssistance App for access to your roadsideassistance services.
If you require more information, please callus in Canada at 1-800-665-2006, or visitour website at www.ford.ca.
Ford Motor Company reserves the right tomodify or discontinue Roadside Assistanceat any time. Certain restrictions apply toRoadside Assistance benefits.
For further details, call1-800-241-3673 (United States)1-800-665-2006 (Canada)
AUTOMATIC CRASH SHUTOFF
WHAT IS AUTOMATIC CRASHSHUTOFF
The automatic crash shutoff is designedto stop the fuel going to the engine in theevent of a moderate or severe crash.
Note:Not every impact causes a shutoff.
AUTOMATIC CRASH SHUTOFFPRECAUTIONS
WARNING: If your vehicle has beeninvolved in a crash, have the fuel systemchecked. Failure to follow this instructioncould result in fire, personal injury ordeath.
RE-ENABLING YOUR VEHICLE
1.Switch the ignition off.
2.Attempt to start your vehicle.
3.Switch the ignition off.
4.Attempt to start your vehicle.
Note:If your vehicle does not start after thethird attempt, have your vehicle checked assoon as possible.
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VEHICLE INSPECTION
INFORMATION
To make sure your vehicle is ready tooperate, conduct a pre-trip inspection atthe beginning of each work period. Followthe steps listed in this section to verify aproper vehicle inspection procedure.
WARNING: Exercise great cautionwhen working on a vehicle equipped withan automatic fan clutch. The fan startsin motion only after the engine coolantreaches a predetermined temperatureor the refrigerant pressure (if equippedwith air conditioning) reaches apredetermined setting. The fan starts atthis point with no advance warning.Never reach near, or permit objects toprotrude into, the fan blade radius whilethe engine is running as this could resultin vehicle damage, personal injury ordeath.
WARNING: Do not operate thevehicle if any suspension conditionslisted in the following charts are evident.Loss of steering or suspension couldresult in property damage, personal injuryor death.
WARNING: If a wheel must bechanged, obtain expert tire service help.Mounting and un-mounting of tiresshould only be performed by a qualifiedtechnician using necessary safetyprocedures and equipment, otherwisethe result could be property damage,personal injury or death.
Note:Always make sure you apply theparking brake before starting the engine.
Engine compartment (with engine off)
Use the dipstick to verify the oil level is in the proper operatingrange. See Engine Oil Dipstick (page 227).Engine oil
Look through the plastic reservoir and verify the coolant levelis within the proper operating range. Do not remove thepressure cap until the coolant has cooled. See EngineCoolant Check (page 238).
Engine coolant
Verify that the fluid level is in the proper operating range. SeePower Steering Fluid Check (page 246).Power steering fluid
Remove the master cylinder caps and inspect the fluid level.See Brake Fluid Check (page 245).Brake fluid
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Engine starting (with parking brake applied)
Check the gauge (diesel engine) or indicator light (gasolineengine) to verify the alternator is charging.Voltmeter
Inspect for excessive free play in the steering linkages. Thesteering wheel should have less than 2 in (5 cm) of free playat its rim.
Steering linkage free play
Verify the parking brake holds the vehicle by gently trying topull forward with the parking brake applied.Parking brake
Verify operation using the following procedure. Chock thewheels, if necessary. Push in the parking brake and, ontractors, push in the tractor parking brake knob:
Air brakes
1. Verify the air compressor or governor cutout pressure isapproximately 120 psi (827 kPa).
2. Turn off the engine, and then turn the key back to the onposition (without starting the engine).
3. Without the brake pedal applied, note the air pressure dropfor one minute. It should be less than 2 psi (14 kPa) for singlevehicles and 3 psi (21 kPa) for combination vehicles.
4. Press and hold the brake pedal with 90 psi (621 kPa) ormore. Make sure there is no more than a 3 psi (21 kPa) perminute leak for single vehicles and a 4 psi (28 kPa) minuteleak for combination vehicles.
5. Pump the brake pedal to deplete the system of air pressure.The warning light and tone should turn on at 57 psi (393 kPa).
6. Pump the brake pedal and make sure the parking brakeand trailer parking brake knobs pop out at 20 psi (138 kPa)or higher.
Verify that the fluid level is in the proper operating range. SeeAutomatic Transmission Fluid Check (page 243).Automatic transmissionfluid
Front of vehicle
Verify all exterior lights illuminate and are clean.Lights
Check headlights function on high and low beam.
Verify reflectors are clean, unbroken and of proper color (redon rear, amber elsewhere).
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Rear brakes
Inspect for cracked, worn or frayed hoses, and that all coup-lings are secure.Hoses
Verify that there are no cracks or dents, and that the cham-bers are securely mounted.Brake chambers
Inspect for broken, loose or missing parts.Slack adjusters
Note: The angle between the push rod and adjuster armshould be approximately 90 degrees when the brakes areapplied. When pulled by hand, the push rod should not movemore than approximately 1 in (2.5 cm).
Verify that there are no cracks, dents, holes, and no loose ormissing bolts and that the brake linings are not worn,dangerously thin or contaminated by lubricant.
Drums
Rear wheels
Check for even separation of dual wheels, and that the tiresare not touching each other.Spacers
Inspect for damaged or bent rims. They should not havewelding repairs, and there should be no rust trails, whichindicate it is loose on the wheel.
Rims
Verify all lug nuts are present and not loose (look for rusttrails around the lug nuts). There should be no cracks radiatingfrom the lug bolt holes or distortion of the bolt holes.
Lug nuts
Trailer
If you are pulling a trailer, perform aninspection of the trailer similar to that ofthe tractor. The inspection should followtrailer manufacturer recommendationsand should include at a minimum: generalcondition, landing gear, doors, sides, lights,reflectors, suspension, brakes, tires,wheels, cargo placement, stability andtie-downs.
Transmission
WARNING: If the unit starts in gearand/or the neutral start switch is notfunctioning correctly, the vehicle mayinadvertently move which could resultin property damage, personal injury ordeath.
Regularly inspect the transmission'sneutral start switch. The engine shouldonly start in neutral (N) or park (P) (ifequipped with a park position).
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GENERAL INFORMATION
WARNING: Making modificationsto various parts, components andsystems of the vehicle, such as brake andsteering systems, can adversely affectthe quality, reliability and operation ofyour vehicle and could result in propertydamage, personal injury or death. Suchmodifications must be avoided.
WARNING: Failure to properlyperform maintenance and servicingprocedures could result in vehicledamage, personal injury or death.
WARNING: Take care whenperforming any maintenance, systemcheck or service on your vehicle. Someof the materials may also be hazardousif used, serviced or handled improperlyand could result in property damage,personal injury or death.
If the owner or operator of the vehicle is askilled technician and intends onperforming the vehicle maintenance andservice, he is strongly urged to purchase aservice manual.
Always use care when performing vehiclemaintenance, repairs or system checks.Improper or incomplete service could resultin your vehicle not working properly whichmay result in personal injury or damage toyour vehicle or equipment. It is theoperator’s responsibility to see that yourvehicle receives proper care andmaintenance. If you have any questionsabout performing service, have the servicedone by a qualified technician.
To help you service your vehicle, weprovide scheduled maintenanceinformation which makes tracking routineservice easy. See ScheduledMaintenance (page 325).
If your vehicle requires professional service,an authorized dealer can provide thenecessary parts and service. Check yourwarranty information to find out whichparts and services are covered.
Use only recommended fuels, lubricants,fluids and service parts conforming tospecifications. Motorcraft® parts aredesigned and built to provide the bestperformance in your vehicle.
Servicing Guidelines
WARNING: The use of inferior partscan adversely affect the quality andreliability of your vehicle and could resultin property damage, personal injury ordeath.
When servicing your vehicle:
•Always wear safety glasses for eyeprotection.
•Always set the parking brake or chockthe wheels.
•Always use support stands, not a jack,when working under a raised vehicle.
•Always turn off the ignition unless aprocedure requires the engine to berunning.
•Always avoid contact with hot metalparts. Allow the components to coolbefore working with, or around, them.
•Always operate the engine in awell-ventilated area.
•Do not wear loose-fitting clothing,hanging jewelry, watches or rings.
•Do not smoke.
•Do not work on the brakes or the clutchunless you take the proper precautionsto avoid inhaling friction material dust.
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UNDER HOOD OVERVIEW - 6.7L DIESEL
Engine compartment fuse box. See Fuses (page 202).A
Windshield washer fluid reservoir. See Washer Fluid Check (page 249).B
Secondary Cooling System Reservoir. See Engine Coolant Check (page 235).C
Engine coolant reservoir. See Engine Coolant Check (page 235).D
Secondary fuel filter. See Draining the Fuel Filter Water Trap (page 234).E
Engine oil separator. See Changing the Engine Oil and Oil Filter (page 228).F
Engine oil filler cap. See Engine Oil Check (page 227).G
Brake fluid reservoir. See Brake Fluid Check (page 245).H
Power steering fluid reservoir. See Power Steering Fluid Check (page 246).I
Air brake compressor. See Brake System Inspection (page 256).J
Engine oil dipstick. See Engine Oil Dipstick (page 227).K
Air cleaner assembly. See Changing the Engine Air Filter (page 230).L
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