Question about 2001 Subaru Forester
Weeping coolant from a hose leading from the radiator to the engine, near the passenger side of then vehicle. Hose also seems under pressure when vehicle is warm. Vehicle has had the radiator replaced by the previous owner, because it overheated once, and that same hose had burst. Vehicle heater seems to be very poor, and the odor of either, gas or coolant can be smelled when heating blowers are on. I have no white smoke, or sweet smelling steam coming out of my tailpipe. Vehicle drives well and all gauges are steady. Handheld scanner says oxygen sensors, and knock sensors have a problem ( check engine light is on). Do you have any idea what it can be?
The knock sensors are attached outside each cylinder and sense when detonation in the cylinder occurs and signals the CPU to increase /decrease the air/fuel ratio for the engine rpm and load. IF they are not working then you will get a rattle in the engine because the CPU is not getting compensating information. This rattle if not stopped will cause engine damage. The o2 sensor problem will have to be addressed also as the sensor is telling the CPU that the air/fuel mixture is not right and it will run lean or rich and the economy will suffer.. Low heat from the heater signifies that there is a air lock in the coolant system that you may have to remove by pressure bleeding the system
Posted on Dec 25, 2013
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Posted on Jan 02, 2017
Your mechanic is ok with saying that...however you should replace both head gaskets. This can get costly if you take it to have it done somewhere, but if you use a manual from your local library or buy one from your local auto parts store, its a much more cost effective way of fixing it. You are ok to drive it, be sure to check your fluid before you do. I would look into getting these changed within the next few weeks.
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Posted on Jan 06, 2009
Sounds like a small leak at head gasket or Water pump going. Small leak on head gasket under idle will leak slow, But when under load will leak faster. Have a compresion check done on the cylinder to locate. Also you might want to try a presure test on the coolant system. Good luck and hope this helps to get you going again.
Posted on Mar 26, 2009
Please have your exaust pipes checked, perhaps a mount is burning. The catalytic converter can make a nasty odor when it is clogged. Check the wear on the serpintine belt.
Posted on Sep 18, 2009
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