2018 Ram ProMaster engine overheat

CAUTION!(Continued)
and may seriously reduce engine performance and
cause serious damage to the engine.
• Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to assure proper catalyst
operation and prevent possible catalyst damage.
NOTE: Intentional tampering with emissions control sys-
tems can result in civil penalties being assessed against
you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe and
abnormal catalyst overheating. If this occurs, stop the vehicle, turn off the engine and allow it to cool. Service,
including a tune-up to manufacturer’s specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter damage:
•
Do not interrupt the ignition when the transmission is in
gear and the vehicle is in motion.
• Do not try to start the vehicle by pushing or towing the
vehicle.
• Do not idle the engine with any ignition components
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough idle
or malfunctioning operating conditions.
Cooling System
WARNING!
• When working near the radiator cooling fan, discon-
nect the fan motor lead or turn the ignition switch to
the OFF position. The fan is temperature controlled
and can start at any time the ignition switch is in the
ON position.
(Continued)
8
SERVICING AND MAINTENANCE 241

•Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant (anti-
freeze) solution. The use of lower quality water will
reduce the amount of corrosion protection in the engine
cooling system.
NOTE:
• It is the owner’s responsibility to maintain the proper
level of protection against freezing according to the
temperatures occurring in the area where the vehicle is
operated.
• Some vehicles require special tools to add coolant prop-
erly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed
to be added to the system, please contact a local autho-
rized dealer.
• Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency,
have a authorized dealer drain, flush, and refill with
OAT coolant (conforming to MS.90032) as soon as pos-
sible.Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
recovery tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
• Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
• Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or engine
damage may result.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a regu-
lated substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
244 SERVICING AND MAINTENANCE

If a Non-FFV vehicle is inadvertently fueled with E-85 fuel,
the engine will have some or all of these symptoms:
•Operate in a lean mode.
• OBD II “Malfunction Indicator Light” on.
• Poor engine performance.
• Poor cold start and cold drivability.
• Increased risk for fuel system component corrosion.
CNG And LP Fuel System Modifications
Modifications that allow the engine to run on compressed
natural gas (CNG) or liquid propane (LP) may result in
damage to the engine, emissions, and fuel system compo-
nents. Problems that result from running CNG or LP are
not the responsibility of the manufacturer and may void or
not be covered under the New Vehicle Limited Warranty.
MMT In Gasoline
Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is
a manganese-containing metallic additive that is blended
into some gasoline to increase octane. Gasoline blended
with MMT provides no performance advantage beyond
gasoline of the same octane number without MMT. Gaso-
line blended with MMT reduces spark plug life and
reduces emissions system performance in some vehicles. The manufacturer recommends that gasoline without
MMT be used in your vehicle. The MMT content of
gasoline may not be indicated on the gasoline pump;
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•
The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.
• An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your authorized dealer for service assistance.
• The use of fuel additives, which are now being sold
as octane enhancers, is not recommended. Most of
(Continued)
284 TECHNICAL SPECIFICATIONS

Compartment.......................... .232
Compartment Identification .................232
Coolant (Antifreeze) ...................242, 286
Cooling .............................. .241
Exhaust Gas Caution ...................131, 285
Fails To Start ........................... .137
Flooded, Starting ........................ .137
Fuel Requirements ....................282, 286
Jump Starting .......................... .214
Oil .............................. .235, 286
Oil Filler Cap .......................... .232
Oil Filter .............................. .236
Oil Selection ........................ .235, 286
Oil Synthetic ........................... .236
Overheating ........................... .218
Starting .............................. .137
Engine Oil Viscosity ........................ .235
Engine Oil Viscosity Chart ....................235
Enhanced Accident Response Feature ............222
Entry System, Illuminated .....................44
Ethanol ................................. .283
Exhaust Gas Caution .....................131, 285
Exhaust System ....................... .131, 240
Exterior Lighting ............................39 Exterior Lights
......................... .38, 133
Filters Air Cleaner ............................ .236
Air Conditioning ..................... .52, 238
Engine Oil ......................... .236, 286
Engine Oil Disposal ...................... .236
Flashers Hazard Warning ........................ .179
Turn Signal ......................... .82, 133
Flooded Engine Starting ..................... .137
Fluid Capacities ........................... .286
Fluid Leaks .............................. .134
Fluid Level Checks Automatic
Transmission ....................248
Brake ................................ .246
Cooling System ......................... .242
Power Steering ......................... .150
Fluids And Lubricants ...................... .286
Fog Lights ................................40
Folding Rear Seat ...........................23
Four-Way Hazard Flasher .....................179
Freeing A Stuck Vehicle ..................... .219
Fuel ................................... .282
Additives ............................. .282
12
INDEX 325

Viscosity.......................... .235, 286
Oil Filter, Change ......................... .236
Oil Filter, Selection ......................... .236
Oil Pressure Light ...........................77
Onboard Diagnostic System ....................82
Operating Precautions ........................82
Operator Manual (Owner’s Manual) ...............4
Outside Rearview Mirrors ...................34, 35
Overheating, Engine ....................... .218
Owner’s Manual (Operator Manual) ...........4,320
Paint Care ............................... .272
Parking Brake ............................ .139
ParkSense System, Rear ..................... .153
Passing Light ..............................40
Personal Settings .......................... .291
Pets ................................... .130
Placard, Tire And Loading Information ...........254
Power Mirrors ................................35
Steering ........................... .149, 150
Windows ...............................54
Power Steering Fluid ....................... .288
Pregnant Women And Seat Belts ................108
Preparation For Jacking ..................... .200Pretensioners
Seat Belts ............................. .108
Radial Ply Tires ........................... .260
Radiator Cap (Coolant Pressure Cap) .............244
Radio Frequency General Information .....................18, 21
Radio Operation .......................... .306
Rear Camera ............................. .157
Rear ParkSense System ..................... .153
Rear Seat, Folding ...........................23
Rearview Mirrors ...........................34
Recreational Towing ........................ .173
Reformulated Gasoline ...................... .282
Refrigerant .............................. .238
Release, Hood ..............................56
Reminder, Seat Belt ........................ .101
Remote

Keyless Entry
Programming Additional Key Fobs .............18
Remote Sound System (Radio) Controls ...........304
Replacement Bulbs ........................ .179
Replacement Keys ...........................20
Replacement Tires ......................... .263
Reporting Safety Defects .....................319
Restraint, Head .............................32
12
INDEX 329