CADILLAC ELDORADO 1994 10.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine SPECIFICATIONS
4.6L 32 Valve (DOHC) Northstar Engine
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The engine is a 4.6 liter (279 cu.in.1 90° V-8 featuring Dual Overhead
Cam (DOHC),
32 valve, and sequential port fuel injection.. This design
results in a powerful, refined engine which is wellmited to even the most
demanding driving conditions..
Engine weight is minimized by the use of low mass alloy materials. The
crankcase, cylinder heads and oil pan are made from cast aluminum. The
induction system housing, cam covers and
oil filter adapter are cast
magnesium.. The reduced engine mass enhances.vehicle handling and.
responsiveness.
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Downloaded from www.Manualslib.com manuals search engine The Northstar engine is designed to require less maintenance than many
other DOHC
V-8 engines. Engine systems are designed to remind the
driver when service is required.
An oil life index indicator monitors
ongoing operating conditions and reminds the driver when an oil change
is needed.
A low coolant warning message keeps track.of the level of this
vital fluid. Direct acting hydraulic tappets provide maintenance free zero
lash operation
of the 32 valves from idle to the 6500 rpm redline. The
camshafts are driven by
a two stage roller chain assembly which is
designed
to provide quiet maintenance free Operation. Platinum tipped
,spark plugs increase the replacement interval
to 100,000 miles.
The four valve per cylinder design provides more efficient engine
breathing which results in higher power than comparable
two valve
engines. The central location
of each spark plug ensures a fast and
complete burning of the fuel/air mixture. The induction system uses
smooth thermoplastic tubes to channel air into the cylinders. The
smoothness
of the tubes is equivalent to the elaborate port polishing
methods used for race car engines. Careful design using the shape and
length
of the tubes boosts horsepower by using sonic pressure waves
created by the motion
of the inlet valves to increase the amount of air
entering ,each cylinder.
The Northstar engine is also designed
to be very durable. The aluminum
block has cast-in-place iron cylinder liners for greater wear resistance.
High strength connecting rods support the free floating piston pins in
bronze bushings for superior high speed performance. The fillets
of the
nodular iron crankshaft undergo
a high pressure compression rolling
operation to improve their resistance to fatigue.
Quiet operation is enhanced by the use of special materials and designs.
The front cover of the engine is stamped from laminated steel which
damps out noise. Special cam cover gasket seals isolate valve train
operation.The fuel injectors are placed inside the induction system
housing
to eliminate- the clicking noise which is common to other fuel
injected engines.
The Northstar engine is designed to provide years of efficient. reliable.
satisfying operation.
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4T80-E Transaxle
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The 4T80-E transaxle has been designed to complement the output
characteristics
of the Northstar engine. The innovative design
incorporates several features which enhance its overall operation.
This transaxle
is the first of a new generation of “SMART” transmissions.
The computer which controls the electronic shift solenoids adapts to
changing environments while you drive. This provides consistent high
quality shifts under all conditions. Communication between the engine
and transaxle through this computer controls engine output during
activation
of torque management or traction control. Smooth shifting is
ensured
by design. Hydraulic accumulators control shift pressures and all
shifts are made
to free wheeling elements.
The
4T80E uses a dry sump lubrication system with a scavenger pump.
This unique feature enables the transaxle to maintain adequate
pressurized oil supply during all maneuvers.
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Spirited performance with very efficient cruising operation are provided
by the combination
of 4 speed overdrive gearing, a torque clutch, with a -
3.71:l final drive on the ETC and a viscous torque converter clutch with a a
3.1 1:l final drive ratio on the Eldorado.
Front Suspension
..
Your fully independent front suspension is a combination strut and spring
design. The frame is isolated from the body with
six rubber mounts.
Rubber bushings are used at the lower control arm pivots. The upper end
of the strut is isolated by a rubber mount which contains a bearing to
allow for wheel turning. The Road Sensing Suspension will automatically
controls the damping rate
of the struts.
The lower end
of the steering knuckle pivots on a ball joint riveted to the
control arm. The ball joint is connected to the steering knuckle with a
castellated nut and cotter pin.
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ShortILong Arm Suspension- (SLA)
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Your vehicle uses an independent shortflong arm rear suspension. All the
rear suspension components
are mounted on a suspension support which
is attached
to the body at four points and is fully isolated with bushings
and insulators to minimize road noise. Each rear wheel
is connected to
the suspension support through the suspension knuckle using an upper
and lower control arm and toe link.
The control arms and toe link are attached to the suspension support on
the inboard side, and to a suspension knuckle on the outboard side. The
hub and bearing assembly is mounted to the knuckle and is a single,
non-serviceable unit which eliminates the need for wheel bearing
adjustment. The load leveling (ELC) shock absorbers are attached to the
lower control arm, with the upper end
of the shock attached to the
suspension support. The springs are held in position between the lower
control
arms and a pocket in the suspension support.
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Downloaded from www.Manualslib.com manuals search engine The suspension system also incorporates a new damping system known as
Road Sensing Suspension. This system control the damping forces in the
shock absorbers and struts,
in response to various road and driving
conditions. The systems are capable of making these damping changes
extremely fast.
A computer receives inputs from vertical acceleration sensors, wheel to
body position sensors, vehicle speed sensor,
lift and dive signals. This
computer evaluates the inputs from these sensors,
to control the damping
of each of the struts and shocks independently
to provide varied levels of
suspension control.
The system also has the capability of providing Speed Sensitive Ste\
ering
control. This system changes your steering effort based
on your vehicle speed.
This system varies the amount of steering effort proportionate to your
vehicle speed. Steering
is easier at a lower speed for increased
maneuverability and parking ease.
As your vehicle speed increases, the
steering effort
is also increased to provide a manual like steering feel for
maximum control and enhanced vehicle stability.
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The power rack and pinion..stee&g .gstem--h,w, a ,rotaq- spool valve which
directs hydraulic fluid coming from the power steering pump .to one side or
the other
side of the rack piston. The integral rack.piston is attached to the
rack. The rack piston converts hydraulic pressure to a linear force which
moves the rack4eft or right.
The force is then transmitted through the
inner and outer tie rods to the steering
.. knuckles, , which turn the wheels
If hydraulic assist is not available, manual conirol, is ‘maintained. However
under these, conditions. more steering effort is required.
4.6 LITER NORTHSTAR ENGINE
Displacement ............................... .4.6L (279 cu.in.)
No. of Cylinders
................ 32-valve DOHC 8 - 90 Degree V
Power (ACC. to
SAE 51349) ................ 270 (b,hp) @ 5600 rpm
Torque (ACC. to
SAE 51349) ............ 300 (lbs. ft.) @? 4000 rpm
ELDORADO
...................................... 204 (kW) @ 5600 rprn
...................................... 407(N*m) @ 4OOOrpm
ETC
Power (ACC. to SAE 51349) ................ 295’(bhp) @ 6000 rpm
Torque (ACC. to
SAE 51349) ............ 290 (lbs. ft.) @? 440.0 rpm
Bore
........................................ 93mm.(3.66.in.)
Stroke
...................................... .84mm (331in.)
Compression Ratio
.................................... 10.3: 1
Cylinder Block ...... Die Cast Aluminum with Iron Cylinder Bores
Cylinder Heads
................................. Cast Aluminum
Intake Manifold-
............ Die Cast Magnesium / Thermoplastic
.......................................... Air Induction Tubes
........................................ 220 (kW) @ 6000 rpm
...................................... 393 (Nom) @ 4400 rpm
Valve. System ................... Direct Acting Hydraulic Tappets
Intake Valve
.................................. 33mm (1.29 in.).
Fkhaust Valve,. ................................ 29mm (1.14.h.)
Pktons
...................................... Cast Aluminum
Firing Order
.................................. 1-2-7-3-4-5-6-8
Left Bank ........................................... 2-4-6-8
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Downloaded from www.Manualslib.com manuals search engine Right Bank ......................................... 1-3-5-7
Camshaft
................... Induction Hardened Cast Grey Iron
Main Bearings
......................................... Five
Drive
Type
........ Single Row / Staged Drive 8 mm Roller Chain
ENGI. LUBRICATION SYSTEM
Type of Intake. .................................... Stationary
Filter System
...................................... Full-Flow
ENGINE COOLING SYSTEM
Surge Tank / Radiator Cap Relief Pressure ...... 15.0 psi (103 Pa)
Water Pump Type
.................................. Centrifugal
,Drive Belt
....................................... Serpentine
Radiator Core
................................... Aluminum
Radiator 'Cooling Fans (2)
............................ Elec.tric
Thermostat
Starts To Open
................ 192-199'F (89-93 C)
FUEL SYSTEM
Induction Type ............ Sequential Port Fuel Injection,(SPFI)
System Pressure
.................... .33.4-43.5 psi (230-300 kPa)
Idle Speed
.................................. ECM Controlled
Filter Type
............................... Paper Type Element
Fuel Pump
................................ Electric (In Tank)
Fuel Required
................. Premium Unleaded (91 Octane)
AUTOMTIC TRANSAXLE
Eldorado (Trade Name ) ................... Hydra- Mafic 4T80E
Type
..................................... 4-Speed Automatic
.................................... Viscous Converter Clutch
Eldorado (Trade Name
) ................... Hydra- Matic 4T80E
Type
..................................... 4-Speed Automatic
Fluid Required
.............. DEXRON III@ or DEXRON IIE@
Axle Ratio (ETC) .................................... 3.71:l
.................................... Torque Converter Clutch
Axle Ratio (ELDORADO) ............................ 3.11:l
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Downloaded from www.Manualslib.com manuals search engine EMISSIONCONTROL SYS.TEMS
. Exhaust Gas Recirculation .................... Controlled Flow
Catalytic.Converter ......................... Ceramic Monolith
Evaporative Emission Control
................ Charcoal Canister
r Crankcase Emission Control .......................... PCV Valve
Electronic System
..................... Open :and .'Closed Loop
r P, EXEUUS.T SYSTEM
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Trpe ................................ Single with. Crossover Pipe
Muffler
................................... One-Reverse Flow
Resonator ............................................. None
. Exhaust Pipe ..................................
Intermediate Pipe ..............................
Tail Pipe .....................................
r i ELECTHCXL SYSTEM
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Stainless Steel
Stainless Steel
Stainless. Steei
Voltage
,. ...............................................
Ground ........................................... -Negative
..Generator
.......................................... 144 Amp
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Refrigerant-Rl34a .......................... 2.375 lbs. (LO8 kg)
1 Not all air conditioningrefrigerants are the same. If the air conditioning
'system
in your vehicle needs refrigerant, besure the:proper.refrigerant .is
used.
If you're.not sure, ask your Cadillac dealership.
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FLUID 'CAPACITIES
Transaxle ...................................... 30 pts. (14 L)
Engine Oil ................................... .7.0 qts (6.6 L)
With Filter Change ............................ 7.5 qts. (6.6 L)
Engine Cooling System ..................... 12.5 quarts (1 1.8 L)

Downloaded from www.Manualslib.com manuals search engine Fuel Tank .................................. 20 gallons (76 L)
Power Steering
.............................. 1.3 quarts (1.2 L)
Windshield Washer Reservoir .................. 4.2 quarts (4.1 L)
TIGHTEN TORQUE
Spark Plugs (4.6 L) ......................... 15 N-m (11 lbs. ft.)
Oil Pan Drain Plug (4.6
L) ................... 20 N*m (15 lbs. ft.)
VEHICLE DIMENSIONS
Eldorado/ETC
Shipping Weight .......................... 3516 lbs. (1594.7 kg)
Shipping Weight
(ETC) ..................... .3695 lbs. (1679 kg)
Wheel Base
................................ 108 in. (2743 mm)
Length .................................. .202.2 in. (5135 mm)
Height ................................... .54.0 in. (1371 mm)
Width .................................... .74.3 in. (1887 mm)
Front Tread ............................... .60.9 in. (1547 mm)
Rear Tread ............................... .60.9 in. (1547 mm)
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