Having problems with your 1999 Subaru Legacy ?
Overheating I have a 1999 Subaru Legacy outback 2.5L. It keeps overheating. I've changed the thermostat, water pump. Checked radiator for pressure and leaks and nothing is wrong. Where should I go from here. No one seems to know what the problem is. Debbie
The 97-99 2.5L DOHC Subaru engines were notorious for this problem, blown head gasket is very likely the cause. It is possible to test for the presence of exhaust gas in the coolant to verify. The reason the car seems to be overheating then cools down quickly when shut off is that the hot exhaust gas displaces the coolant at the top of the engine where the sensor is. If it happens consistently you will need to deal with it, I have worked on an engine that was run many miles under this condition and it damaged the block beyond repair. If you are a decent shade-tree mechanic, it is possible to do the work with the engine still in the car, you will have to raise it up an inch or two to get sufficient access. I have personally done 3 engines with this problem, a 98 and 2 99's.
I had this problem - it was a blown head gasket. Contact Subaru to see if you're car is covered by a limited recall - if not they may offer to help pay for the repair. Good luck.
Repair Help & Product Troubleshooting for 1999 Subaru Legacy
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.