How to troubleshoot cooling system issues on a 1967 Shelby GT500?

Content verified by Michael G.
July 18, 2025
Learn how to easily fix cooling system problems on your 1967 Shelby GT500 with our simple, step-by-step guide. Keep your car running smoothly with our expert tips!

Dealing with cooling system issues on a 1967 Shelby GT500 can be challenging but is paramount to ensure the vehicle performs excellently without overheating. Common symptoms of cooling system problems include the temperature gauge showing high readings, coolant leaks, or steam coming from the engine bay. These issues are indicative of potential malfunctions in the radiator, thermostat, water pump, or other related components. Here is how to solve this issue:

Step 1: Check the Coolant Level

Firstly, you'll need to inspect the coolant level in the radiator. The radiator is located at the front of the engine bay, right behind the front grille of the car. It has a cap at the top, which you can twist to open. Be sure the engine is completely cool before doing this to avoid burns from hot steam or coolant. If the coolant level is low, refill it with a mixture of distilled water and the appropriate coolant.

Step 2: Inspect for Coolant Leaks

Look around the engine bay and underneath the car for any signs of coolant leaks. Pay close attention to the hoses connected to the radiator and engine, as well as the water pump, which is located at the front of the engine, driven by the serpentine belt. Coolant is typically a bright green or orange color, so it should be noticeable if it has leaked. Replace any damaged hoses or gaskets that might be causing the leak.

Step 3: Check the Radiator Cap

The radiator cap is a crucial component as it maintains pressure in the cooling system. It is located on top of the radiator and can be identified by its round metal appearance with warning inscriptions. If the cap is damaged or unable to hold pressure, it can lead to overheating issues. Test the cap’s ability to hold pressure and replace it if needed.

Step 4: Examine the Thermostat

The thermostat controls coolant flow and is crucial for maintaining the right engine temperature. It is located where the top radiator hose meets the engine. Remove the thermostat housing by unscrewing the bolts, and take out the thermostat for inspection. Place it in hot water to see if it opens (it should open when heated). If it’s stuck closed or doesn't open fully, replace it with a new one.

Step 5: Investigate the Water Pump

Located at the front of the engine, the water pump circulates coolant through the engine and radiator. Look for signs of coolant leakage around the water pump weep hole (a small hole on the water pump housing) or listen for a squealing noise, which indicates a failing pump bearing. If you identify any issues, replace the water pump.

Step 6: Flush the Radiator

Over time, sediments can build up in the radiator, reducing its efficiency. To flush the radiator, drain the old coolant, then remove the radiator drain plug (usually found at the bottom of the radiator). Afterward, use a radiator flush solution and distilled water to clean out the system, then refill it with the appropriate coolant mixture.

Step 7: Confirm Your Fan Operation

Inspect the radiator cooling fan to ensure it is functioning correctly. On a 1967 Shelby GT500, you may have a belt-driven fan or an electric fan. Check that the fan blades are not damaged and spin without wobbling. For electric fans, ensure they activate when the engine temperature rises.

By methodically following these steps and performing the necessary checks and replacements, you should be able to troubleshoot and resolve any cooling system issues on your 1967 Shelby GT500.

Still Struggling? Sign Up to Ask a Car Expert and Get a Consultation—For Free!

Join Our Community & Get Instant Access to Expert-Verified Repair Guides

What our members say

Discover how AutoFame.com has empowered fellow car enthusiasts—from weekend DIY mechanics to seasoned collectors—to document, restore, and celebrate their automotive stories like never before.

Stars - Elements Webflow Library - BRIX Templates

"AutoFame.com took my collection’s documentation to the next level. Before, I had scattered notes and old photos in boxes—now everything’s organized and accessible in one place. The AI-driven narratives also helped me craft a fascinating story around my ‘67 Mustang’s history that I proudly share at shows!"

Mark R., Classic Car Collector

Member since Dec'24
Stars - Elements Webflow Library - BRIX Templates

"I’m not a professional mechanic, but I love working on my car. AutoFame.com’s step-by-step guides and community forums gave me the confidence to tackle issues on my own. Last month, I fixed a stubborn headlight alignment problem in minutes. It’s like having a trusted car expert on speed dial."

Martin K., Weekend DIY Mechanic

Member since Sep'24
Stars - Elements Webflow Library - BRIX Templates

"AutoFame.com’s AI-driven insights blew me away. It automatically pulled up detailed specs and historical data on my BMW M3, and even composed a compelling narrative for my show board. When I shared it at a local event, everyone wanted to know how I put it together. AutoFame.com made me look like a pro!"

Alex M., Performance Enthusiast

Member since Sep'24
Stars - Elements Webflow Library - BRIX Templates

"I’ve been restoring my grandfather’s old Chevy pickup, and AutoFame.com has been a lifesaver. The vast data access helped me confirm original specs, and the documentation tools ensure I never lose track of my progress. My project went from chaotic guesswork to a well-organized, enjoyable journey."

Clara J., Restoration Hobbyist

Member since Jun'24
Stars - Elements Webflow Library - BRIX Templates

"AutoFame.com isn’t just about data—it’s about community. I run a local car club, and we’ve started using their event listings and forums to keep everyone updated. Our members love how easy it is to share photos, ask questions, and discover new shows. It’s brought our club closer together and boosted our turnout!

Trevor S., Car Club Organizer

Member since Jan'24
Icon - Elements Webflow Library - BRIX Templates
Icon - Elements Webflow Library - BRIX Templates

Classic cars have appreciated 185%

That's just over the last decade according to the night Franks Luxury Investment Index, making it the best-performing asset class of any other type of collectible. AutoFame.com was developed to take your car collection and preservation the extra mile with a growing list of innovative features.

AI-Driven Insights and Narratives

Utilize cutting-edge AI to discover fascinating facts about your car and compose engaging, descriptive narratives that highlight its unique story.

Extensive Data Access

Access vast datasets to populate your car’s specifications, title history, and more, ensuring your records are detailed and accurate.

Comprehensive Documentation

Document key aspects of your car’s history, maintenance, restoration, customization, and performance. Preserve every detail that makes your car special.

Multimedia Cloud Storage

Store photos, videos, and records of awards or special recognition, creating a rich, visual history of your vehicle.

Community Engagement

Join group forums and participate in event postings to connect with fellow car enthusiasts and build a supportive community.

Privacy and Sharing Control

Enjoy complete control over your privacy and sharing settings. Share your car’s legacy through a searchable gallery or on social media platforms with ease.

Mobile-Friendly Platform

Our mobile-friendly platform makes it easy to document and share your car’s legacy anytime, anywhere.

Value Creation

Discover, preserve, and share the legacy of your precious automotive assets to increase their appeal and value.