What people keep running into with vehicle diagnostics
Complaints tagged vehicle diagnostics, each raised by more than one person. One-off posts are not included.
44 recurring problems · 556 people · 9 forums we read
Raised more than once
Most people first.
- 2Is a car totaled if the engine moved?An engine shifting out of alignment usually stems from broken engine mounts, throwing off the precise alignment required for surrounding components to function. While it creates severe structural concerns that make the car feel entirely dead to drive, it is mechanically fixable depending on the extent of the underlying damage.
- 2Why is there brown foam in my coolant reservoir?Brown foam on the radiator cap accompanied by boiling sounds and bubbling after parking indicates an unknown substance has mixed into the cooling system. Drivers are left trying to determine if this mysterious substance is caused by an oil cooler leak, transmission fluid, or accidentally mixed oil.
- 2Why is there a mysterious hole in my fuel tank?Some plastic vehicle tanks develop unexplained punctures that leave the tank empty, with edges pushed outward rather than inward and no metal shavings or swarf around the hole. This leaves owners worried and unable to find matching examples or explanations online, making it difficult to determine how the damage occurred.
- 2Dealership can't figure out why my car won't startMechanics often struggle to diagnose intermittent electrical issues when the dashboard lights up and the vehicle fails to crank. This leaves owners stranded without their car for weeks while the repair shop remains unable to find the root cause.
Comes up alongside
Topics that keep appearing on the same problems — not topics with similar names.