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RV Overheating Diagnosis Tool

Identify the cause of your RV's overheating problem and get repair estimates

⚠️ IMMEDIATE ATTENTION REQUIRED

Based on your symptoms, your RV may have a serious cooling system issue. Do not continue driving. Pull over safely and have it towed to a repair facility to prevent catastrophic engine damage.

Symptoms Reported
1
Active indicators
Urgency Level
immediate
Action needed
Estimated Cost
$20-$1,200
Repair range
Likely Issues
5
Possible causes

RV Information

When Does It Overheat?

At Idle/Low Speed
City Driving/Stop-Go
Highway/High Speed
Climbing Hills/Heavy Load
All Driving Conditions

Select All Symptoms

Recent Maintenance

Diagnostic Results

Low Coolant Level

MOST LIKELY

Insufficient coolant in the system

35%
Likelihood
Estimated Cost
$20 - $100
Severity & Urgency
high · immediate
DIY Possible

Water Pump Failure

Water pump not circulating coolant

35%
Likelihood
Estimated Cost
$400 - $1,200
Severity & Urgency
high · immediate
Professional Required

Clogged/Blocked Radiator

Radiator fins blocked or internally clogged

35%
Likelihood
Estimated Cost
$150 - $600
Severity & Urgency
medium · soon
Professional Required

Stuck Thermostat

Thermostat not opening properly

20%
Likelihood
Estimated Cost
$80 - $250
Severity & Urgency
medium · soon
DIY Possible

Radiator Fan Issues

Fan not engaging or running

20%
Likelihood
Estimated Cost
$200 - $800
Severity & Urgency
high · immediate
Professional Required

Recommended Actions

🚨 Stop Driving Immediately

  • • Pull over safely and turn off the engine
  • • Do NOT attempt to drive to a repair shop
  • • Call for a tow truck to avoid engine damage
  • • Continuing to drive may cause catastrophic failure

💡 Prevention Tips

  • • Check coolant level monthly
  • • Inspect hoses and belts regularly
  • • Flush cooling system every 2-3 years
  • • Monitor temperature gauge while driving
  • • Keep up with scheduled maintenance

🔧 What to Tell Your Mechanic

When you visit a repair shop, mention:

  • • "Temperature gauge goes into red zone"
  • • "Overheats during: highway/high speed"
  • • "RV has 75,000 miles"

⚠️ Important Disclaimer

This diagnostic tool provides estimates based on common symptoms and patterns. It is NOT a substitute for professional mechanical diagnosis. Actual problems may differ, and repair costs can vary significantly based on your location, RV make/model, and labor rates. Always have a qualified RV technician inspect your vehicle before making repair decisions. Continuing to drive an overheating RV can cause severe engine damage.