Overheating

2004 BUICK RENDEZVOUS
100,000 MILES • 3.4L • 4 CYL • 2WD • MANUAL
Avatar
MAJJJW6455
  • MEMBER
  • 1 POST
My vehicle overheats while sitting, had new engine.. after that replaced bad gaskets, new radiator, new sensor, new thermostat, new water pump, and bled air from coolant system, but still overheats.
Jun 3, 2021 at 9:09 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

Do the cooling fans work? Make sure they come on when the engine gets hot.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

https://www.2carpros.com/articles/how-an-electric-cooling-fan-works

I attached a diagram for you of the system. Check for voltage to the fans when running and the engine is hot. Test the fuses in the diagram for power on both sides. When there is overheating at idle only, it is usually from lack of air through the radiator.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy

Image (Click to enlarge)
Attached Media
Jun 3, 2021 at 11:14 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle