In the mid-1990s, Chrysler finalized and launched a line of powertrains for the Neon sedan that had just appeared in those years. The motors were produced in three variants – 1.8, 2.0 and 2.4 liters.
Chrysler EDZ 2.4 engine specifications
The Chrysler EDZ 2.4 liter engine is an inline 4-cylinder motor that was used on various models of Chrysler, Dodge, Jeep and even some Russian GAZ cars. It is known for its reliability, long life and affordability in maintenance. Key features include distributed fuel injection, aluminum cylinder head and timing system with belt drive.
Main Features
| Characteristics | Value |
|---|---|
| Type | Ready |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Definite displacement | 2429 cm³ |
| Cylinder diameter | 87.5 mm |
| Piston stroke | 101 mm |
| Power | 137 – 152 hp |
| Torque | 210 – 230 Nm |
| Compression ratio | 9.4 – 9.5 |
| Environmental regulations | Euro 3/4 |
| Engine weight | 155 kg |
Engine Application
This engine has been fitted to a wide range of vehicles including the Chrysler Cirrus, PT Cruiser, Sebring, Voyager, Dodge Caravan, Stratus, Jeep Liberty and Wrangler, as well as Russian models such as the GAZ Volga 31105 and Volga Siber. The engine was used on these models between 1995 and 2010, demonstrating its versatility and adaptability.
Advantages and disadvantages
The EDZ engine has a number of advantages, including a long resource, which with proper care can reach up to 500 thousand kilometers. It is also well adapted to the quality of domestic fuel and has hydrocompensators, which simplifies valve maintenance. However, the engine has disadvantages: high fuel consumption for its power, frequent problems with the cylinder head gasket and oil leakage through the pressure sensor. In addition, there are frequent problems with the electrical system.
Service regulations for the EDZ 2.4 liter engine
| Maintenance | Periodicity | Notes |
|---|---|---|
| Oil change | every 15,000 km | Oil change volume – about 4.7 liters |
| Oil | 5W-30, 5W-40 | Total volume – 5.5 liters |
| Replacement of the timing belt | 100,000 km | On GAZ cars – every 75,000 km |
| Spark plugs | every 45,000 km | – |
| Oil and air filters | every 15,000 km | – |
| Coolant | every 3 years or 90,000 km | – |
| Auxiliary belt | every 75,000 km | – |
Reliability and engine life
The vast majority of power units of that era are characterized by a thin-walled cast iron cylinder block, which the 2.4 EDZ has. There are 2 camshafts in the light-alloy cylinder head, they are driven by a toothed timing belt. In the valve train there are hydrocompensators. Curious fact, but from the whole lineup, only the power unit with a volume of 2.4 liters received a pair of balancer shafts in the model with a chain drive. In addition, the engine has a dual-mass flywheel with an impressive life. The pulley is damped, with a special layer of rubber.
Its only disadvantage is the cost of spare parts, but they rarely break. If you timely pass the maintenance and carefully treat the car, the motor can playfully cope with a mileage of 500 thousand.
Motor supports
Dampers of supports made of rubber have an impressive resource, but, of course, are not eternal, so about 200 thousand mileage they should be replaced. With the appearance of wear and microcracks, a noticeable vibration of the steering wheel during driving begins to be felt. In addition, when switching to “reverse”, there are strong kicks. Experienced motorists can easily notice wear and tear by the way the motor is lowered on the side of the timing belt. This happens because the rubber support ceases to hold the engine at the necessary level. Changing the upper support is easy, but the rear support will make you sweat.
Oil leakage on the pressure sensor
Often on this motor it is necessary to replace the oil pressure sensor, which begins to leak. It is located directly under the exhaust manifold, so you can realize that it has started to leak by a small puddle of oil under the car. But if you ignore this problem, the oil begins to ooze profusely, and the consumption rises to 1 liter per thousand km. Sometimes about the leaking sensor indicates a “red oil light”, which flashes on the panel for a couple or three seconds. Experimentally it was found that the sensors installed on the 1.6 internal combustion engine, which were equipped with Mini of the first generation, have an impressive working life and resistance to wear.
Crankshaft position sensor location
In 2003 and 2004, there were some changes in the engine, in particular, they affected the engine management system and the location of the crankshaft position sensor. This is extremely important to consider if you are going to replace the engine on the auto. In prerestyling motors, the sensor is located under the generator, not far from the timing gear. But here on updated motors, the DPKV is located near the starter, being in close proximity to the flywheel. It is also important to understand that these are completely different sensors, and this feature does not allow without replacing the ECU and wiring to replace the motors with a volume of 2.0 – 2.4 liters on prerestyling and updated cars.
To realize that the DPKV has failed is very easy, since the corresponding error lights up on the dashboard, and the engine begins to work extremely unstable.
EVAP system error
Periodically on Chryslers with a 2.4 engine (and on other motors this problem is also not uncommon), Check Engine lights up, also appears error P0456, indicating a leak in the vapor ventilation system. To solve this problem is quite simple. It is necessary to replace the tank neck plug. However, sometimes the problem is not in it, but in cracked tubes of the vapor recovery system.
Throttle valve and idle control
The throttle valve of the motors has a cable drive, so the idle speed adjustment involves a regulator. In general – these are quality and resourceful units. If there are difficulties with idling and hanging revolutions, it is necessary to clean the regulator, almost certainly its stem is clogged with a dense oil deposit.
Camshaft sensor
This is one of the most common problems, as this sensor breaks down regularly. You can realize that it has failed by error P0340. And the behavior of the car changes dramatically:
- The motor goes into emergency mode.
- It is impossible to start on hot.
- RPMs are truncated to 2000 per minute.
Thankfully, the sensor is very cheap and its replacement will not cause much trouble.
Thermostat leak
The thermostat housing often leaks. Coolant can leak in several directions at once, usually at the junction of the pipe and the “neck” of the body, as well as on its halves, which are sealed with a gasket. In the case when the fluid begins to leak on the body, you will have to use sealant to eliminate the leak, or buy a new gasket, which is sold only together with the thermostat.
Ignition Coil
This motor is equipped with a dual ignition coil. It supplies spark to cylinders 1 and 4, 2 and 3 in pairs.
The resistance of the secondary winding can be measured on the high voltage leads, and it should be between 11.5 and 14.5 kOhm. The resistance of the primary winding can be measured at the connector between the center and side pins, and it should be within 0.5 – 0.65 ohms, at a normal temperature of 23 degrees.
As practice shows, this coil has an impressive resource and wear resistance. If we talk about possible problems, then periodically they occur with high-voltage wires, and piercing of the body with a spark can be seen very rarely.
G timing belt
The toothed belt drives two camshafts at once, along with the pump. The belt should be replaced every 140 thousand mileage. Not only the belt is changed, but also the tensioner, pump, auxiliary roller and oil seals of the crankshaft and camshaft. For convenience, all the marks are applied to the shaft pulleys, which seriously simplifies the process of belt replacement.
Oil leakage along the cylinder-head gasket
The Chrysler engine under consideration today, as well as the model with a volume of 2.0, occasionally suffers from oil leakage through the gasket. Most often, the gasket loses its tightness around the drain channels from the head. To correct this problem, you will have to lift the block head and install a new gasket. Before installing the gasket, thoroughly clean, inspect, and prepare the mating planes. If this is not done, the problem will soon recur.
Cylinder Block Head
Chrysler 2.4 EDZ cylinder heads on updated and prerestyling power units have different channel profiles. In addition, the heads of the engine block 2.4 for domestic and American cars are different. The difference lies in the camshafts, which have completely different diameters of necks and supports.
Valve thawing
On very many Chrysler 2.4 motors in one, and sometimes several cylinders at once, the compression drops. In case when the compression is seriously reduced in one cylinder, the motor starts to run extremely unstable, with a noticeable “trolling”. But if there is no compression in two cylinders at once, the power unit will not start at all.
Almost always the compression drops because of the exhaust valve burnout. Most often the valve burns out due to noticeable wear of its guide sleeve, also the reason can be found in the oil soot on the plate. These factors, namely the violation of heat dissipation through the valve seat and abundant oil deposits, cause overheating of the valve. Because of this, the plate area suffers from overheating, which leads to melting or splintering of its parts.
EGR valve
The Chrysler 2.4 engine is equipped with an EGR valve, the stem of which is driven by a vacuum actuator. In general, the operability of the valve directly depends on the condition of the vacuum tubes and the membrane in the “fungus” of the valve. After about 10-15 years, the rubber begins to degrade, which affects the diaphragm, as it loses elasticity and begins to crack. All this leads to the fact that the valve simply does not open. However, most often the EGR valve does not open because of soot deposits, which intentionally clogs the valve. The electronic control unit sees that there is no gas flow in the intake manifold. If the flow of gases is constant and strong, but the motor begins to lose traction, there are noticeable vibrations, and in some cases, the car refuses to start at all. To solve the problem associated with the EGR valve, it must be cleaned well.
Balancer shafts
The shafts are driven by a chain equipped with a non-automatic tensioner. Like any chain, it stretches over time, which is easy to understand by the increased noise and rattling in the area of the crankshaft pulley. Sometimes the tension problem can be solved with a shoe. However, if during adjustment the gap between the guide and the chain cannot be reduced to 0.5 mm, you will need to buy not only a new chain, but also a new guide.