Engine Operation - Except 4.5L Engines Normal Engine Operation Observe engine coolant temperature and engine oil pressure. Temperatures and pressures will vary between engines and with changing operating conditions, temperatures, and loads. remove load and restart the engine. Overheating of the turbocharger parts may occur when oil flow is stopped. Normal engine coolant operating temperature range is 82 ° ° C (180 ° —202 ° F). If coolant temperature rises above 112 ° C (234 ° F), reduce load on engine. Unless temperature drops quickly, stop engine and determine cause before resuming operation. Stop engine immediately if there are any signs of part failure.
Symptoms that may be early signs of engine problems are: Sudden drop in oil pressure Abnormal coolant temperatures Unusual noise or vibration Sudden loss of power Excessive black exhaust Excessive fuel consumption Excessive oil consumption Fluid leaks Operate the engine under a lighter load and at slower than normal speed for first 15 minutes after start-up. DO NOT run engine at slow idle. IMPORTANT: Should the engine die while operating under load, immediately RG,RG34710,5552 –19–20MAY96–1/1 19-7 021604 PN=105