April 5, 200619 yr 93 Legacy, 2.2 non-turbo. Starts up runs perfect, until it gets hot. It then boggs down and has serious hesitation. I plan on installing new NGK plugs (not sure what it has now), replacing PCV valve and possibly the 2 wire coolant temperature sensor. Anything else I should check/try?
April 6, 200619 yr I would check the coil pact, breaking down under heat sounds like it could be the problem. 93 Legacy, 2.2 non-turbo. Starts up runs perfect, until it gets hot. It then boggs down and has serious hesitation. I plan on installing new NGK plugs (not sure what it has now), replacing PCV valve and possibly the 2 wire coolant temperature sensor. Anything else I should check/try?
April 10, 200619 yr Author Definitely do the coolant temp sensor. It turns out that my VW fuel pump was getting weaker as it ran longer. The fuel pump was causing the problem. After replacing the fuel pump everything was happy again. (I neglected to mention the 93 Subaru engine is installed in an 89 Vanagon)
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