Engine Overheats: Troubleshooting

We have more information on overheating availabe on our blogs and videos:

• Avoiding Engine Failure Blogpost
• Avoiding Engine Failure Video
• Engine Light Came On? Blogpost
• Don't Trust the Jug  Blogpost
• Transmission Failure and Overheating Blogpost

Engine Overheats:

• Bad temperature guage or sending unit.
• Bad cooling system thermostat.
• Broken cooling fan belts.
• Low oil level or incorrect grade/type of oil used.
• Engine brake exhaust valve stuck in closed position.
• Blocked radiator or deposit on water jacket walls.
• Excessive engine exhaust system back pressure.
• Excessive rolling resistance due to dragging brakes or low tire pressures.
• Excessive engine friction.
• Use of a winter front.

Engine Does Not Reach Operating Temperature:

• Bad cooling system thermostat.
• Bad temperature guage or sending unit.