Chrysler Front Wheel Drive Cars 4-CYL 1981-1995 Repair Information

PCV Valve or CCV Fitting

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The Premier models do not utilize a PCV valve. They use a CCV fitting, which essentially performs the same function as a PCV valve.

GENERAL INFORMATION



Except Premier

Chrysler Corporation recommends that a PCV valve not be cleaned. A new Mopar or equivalent PCV valve should be installed when servicing is required. Over a period of time, depending on the environment where the vehicle is used, deposits build up in the PCV vacuum circuit. The PCV system should be inspected at every oil change. Service the PCV system if engine oil is being discharged into the air cleaner. Chrysler recommends on replacing the PCV valve with a new one every 60,000 miles (96,000 km), unless the vehicle is driven under severe conditions, in which case, the PCV valve should be changed every 30,000 miles (48,000 km).

Premier

The Crankcase Ventilation (CCV) system must be kept clean to maintain good performance and durability. Periodic service is required to remove combustion products from the valve, hoses, and carburetor or intake manifold passages. The components should be inspected and serviced every 30,000 miles (48,000 km). If the vehicle is used excessively for short trips with frequent idling, the CCV system may require servicing more frequently.

REMOVAL & INSTALLATION



Except Premier

See Figures 1 through 8

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Fig. Fig. 1: Check for suction at the PCV valve while the vehicle is idling



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Fig. Fig. 2: The PCV valve location and system hose routing-2.2L and 2.6L carbureted engines



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Fig. Fig. 3: The PCV valve location and system hose routing-1982-88 2.2L turbo engines



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Fig. Fig. 4: It may be necessary to remove, or at least loosen, the air cleaner housing-1989 2.5L except Premier engine



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Fig. Fig. 5: Chrysler recommends that the PCV valve not be cleaned; it should be replaced instead



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Fig. Fig. 6: PCV valve location and system hose routing-1989-95 2.2L turbo, 2.5L turbo and 2.5L flexible fuel engines



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Fig. Fig. 7: PCV valve location and system hose routing-2.2L and 2.5L EFI engines



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Fig. Fig. 8: PCV valve location and system hose routing-1989 2.5L Premier engines

To inspect the system, removal the PCV valve from the crankcase vent module, rocker arm cover, or crankcase vent valve hose, then shake it. If the valve rattles, this is a partial indication that it is okay; if there is no sound, it must be replaced and the PCV hose cleaned by spraying carburetor cleaner solvent through it.

If the valve rattles, you should still check the PCV valve with the engine idling. Pull it out of the vent module and place your finger or thumb over the end to stop air flow. You should feel some suction, and the engine speed should drop slightly. If there is no suction, or if the engine idle speeds up and smooths out considerably, replace the valve. Inspect the PCV hose and clean it by spraying solvent through it, if the inside is coated with gum and varnish.

Check the vacuum at the PCV inlet (from the rocker arm cover to the air cleaner) tube, as well. Disconnect this tube from the air cleaner and loosely hold a piece of paper over the tube. After about a minute, enough vacuum should build up to cause the paper to be sucked against the opening with a noticeable amount of force. This test proves whether or not the suction side of the system is clear.

Regardless of PCV valve or system performance, the valve itself should be replaced at specified intervals. At this time, you should inspect the hoses for clogging and spray a small amount of a safe cleaning solvent designed for this purpose through the hoses to remove any accumulated sludge or varnish. To replace the PCV valve, as follows:

  1. Remove the air cleaner assembly for clearance, if necessary.
  2.  
  3. Pull the PCV valve or PCV valve hose out of the rocker arm cover.
  4.  
  5. Disconnect the PCV valve from the second hose by pulling.
  6.  
  7. Remove the PCV valve from the vehicle.
  8.  

To install:
  1. Slide one end of the PCV valve into the hose leading to the intake manifold or throttle body.
  2.  
  3. Insert the other end into the hose, which attaches to the rocker arm cover or slide the PCv valve directly into the rocker arm cover (depends on the specific engine).
  4.  
  5. If necessary, install the air cleaner housing. If not already performed, this would be a great time to inspect the air cleaner filter!
  6.  

Premier
  1. Disconnect the molded vacuum hose from the CCV fitting (mounted in the rocker arm cover).
  2.  
  3. Using a wrench or socket, loosen the CCV fitting. Remove it from the rocker arm cover.
  4.  
  5. For cleaning purposes, remove the molded vacuum hose from the intake manifold runner connection.
  6.  
  7. Clean the CCV fitting and molded vacuum hose with solvent.
  8.  

To install:
  1. Attach the end of the molded vacuum hose to the intake manifold runner connection port.
  2.  
  3. Thread the CCV fitting into the rocker arm cover and tighten until snug.
  4.  
  5. Attach the molded vacuum hose to the CCV fitting.
  6.  

 
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