Indian Steve Posted February 6, 2018 Share Posted February 6, 2018 My wife has a 2005 Forester that had a problem with overheating. It has had new head gaskets, thermostat, radiator & hoses done at a reputable shop. It no longer overheats but the temperature increases on the gauge when she goes up long hills. It does not go out of normal range but she insist that something is wrong and is going to get another vehicle {never have another Subaru}. It has close to 200,000 miles and runs great. The cruise light flashes and check engine light are on. Scan shows catalytic converter. Could the Catalytic Convertor be causing the rise in temperature or is this normal and she just didn't notice before? Thanks Link to comment Share on other sites More sharing options...
montana tom Posted February 6, 2018 Share Posted February 6, 2018 Check your electric fans. If even one quits they will start to heat on a hill. In driveway, hood open turn the a/c on , blower motor running. Both your electric fans should come on .If not check fuses. Wife's car did this... was a blown fuse on secondary fan. Link to comment Share on other sites More sharing options...
Indian Steve Posted February 6, 2018 Author Share Posted February 6, 2018 Both Fans are working and fan relays have been replaced. Link to comment Share on other sites More sharing options...
montana tom Posted February 6, 2018 Share Posted February 6, 2018 Well , Too bad...would have been an easy cheap fix. I then suspect you may need a radiator. Link to comment Share on other sites More sharing options...
Indian Steve Posted February 6, 2018 Author Share Posted February 6, 2018 It has a brand new radiator, cap, thermostat, and head gaskets Link to comment Share on other sites More sharing options...
Indian Steve Posted February 6, 2018 Author Share Posted February 6, 2018 Could the catalytic converter cause a temperature rise. It is not overheating, just going up {in the safe range} while going uphill. Link to comment Share on other sites More sharing options...
montana tom Posted February 6, 2018 Share Posted February 6, 2018 (edited) I have seen catalytic's glow red from too much fuel, car hardly runs at that point. However it had no effect on the temperature. 2005 is 13 years old now ... radiators do not last forever... they are also easy to change and not that expensive to buy. (EDIT) My bad just reread your post you have a new rad. .... subaru thermostat ? or aftermarket ? Edited February 6, 2018 by montana tom Link to comment Share on other sites More sharing options...
golucky66 Posted February 6, 2018 Share Posted February 6, 2018 Bypass the heater core and test drive it under the same conditions. 2 Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted February 7, 2018 Share Posted February 7, 2018 was an OEM thermostat used? could there be a lot of debris/bugs built-up between the condenser and radiator? Link to comment Share on other sites More sharing options...
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