Jeep Cherokee (XJ): On-board diagnostics

Next pageEmission system. Malfunction indicator lamp (mil). State display test mode

Emission system OPERATION The Powertrain Control Module (PCM) monitors many different circuits in the fuel injection, ignition, emission and engine systems. If the PCM senses a problem with a moni ...

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Valve springs and oil seals. Cylinder head. Valves and valve springs
Valve springs and oil seals This procedure can be done with the engine cylinder head installed on the block. REMOVAL Inspect the valve stems, especially the grooves. An Arkansas smooth stone should be used to remove nicks and high spots. Each valve spring is held in place by a retainer and ...