Sundance Posted February 27, 2009 Share Posted February 27, 2009 My wifes 95 Leg 2.2 has been hard starting when it's cold. Now she calls me and says her MPG was 14.5!! And smells like it's running rich. The cars had: *New Coolant Temp Sensor *New Fuel Filter *New Plugs and wires *New air filter Quote Link to comment Share on other sites More sharing options...
Bucky92 Posted February 27, 2009 Share Posted February 27, 2009 New O2 sensor? Quote Link to comment Share on other sites More sharing options...
OB99W Posted February 27, 2009 Share Posted February 27, 2009 Has anyone checked the fuel pressure regulator operation? Quote Link to comment Share on other sites More sharing options...
86subaru Posted February 27, 2009 Share Posted February 27, 2009 this might be a dumb question , but has she changed driving habits, meaning shorter trips , more idling, both my subaru's are 2.2 1 is 95 other 1 is a 97 , the 95 gets around 22-23- mpg, the 97 gets 24-25 mpg, and both have 170,000mi om them , i have done everything possible to the 95 to get better mpg, , but i make short trips with it, Quote Link to comment Share on other sites More sharing options...
nipper Posted February 27, 2009 Share Posted February 27, 2009 I got down to 14 with a bad O2 sensor, Replace the front one with an OE. I had an aftermarket and it only lasted 2 years (for the record I did not install it or buy it). How many miles on the car? When was the last time a timing belt was replaced? nipper Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted February 27, 2009 Share Posted February 27, 2009 *New Coolant Temp Sensor *New Fuel Filter *New Plugs and wires *New air filter of these, list the Manufacturer brands involved. Quote Link to comment Share on other sites More sharing options...
Sundance Posted February 28, 2009 Author Share Posted February 28, 2009 I got down to 14 with a bad O2 sensor, Replace the front one with an OE. I had an aftermarket and it only lasted 2 years (for the record I did not install it or buy it). Would that make for hard start when cold too?? She has had it scanned for codes twice with no codes showing. How many miles on the car? Like 115K or so. When was the last time a timing belt was replaced? I am guessing but for sure no more than 20K ago along with engine seals, water pump, etc. Quote Link to comment Share on other sites More sharing options...
Sundance Posted February 28, 2009 Author Share Posted February 28, 2009 *New Coolant Temp Sensor *New Fuel Filter *New Plugs and wires *New air filter of these, list the Manufacturer brands involved. I don't remember all the brands. NGK plugs and a Borg/Warner sensor. All parts were top quality. Quote Link to comment Share on other sites More sharing options...
nipper Posted February 28, 2009 Share Posted February 28, 2009 We are attacking one problem at a time. The O2 sensor needs to be OE. Hard starting can be a fuel pressure issue, can be runing too rich becuase of the O2 sensor and fouling the plugs, but generally fix one issue at a time. Also get the codes read, see if any are stored, and then reset them and lets start with a clean slate. Also describe better the hard starting. nipper Quote Link to comment Share on other sites More sharing options...
Sundance Posted February 28, 2009 Author Share Posted February 28, 2009 Also describe better the hard starting. When cold the car starts hard. She has to give the pedal a little gas to get it to go. To much and she then has to keep it to the boards. Runs rough for a few seconds then it's fine. Once warm, even after sitting an hour or two, it fires right up. Codes were read twice in the last month with nothing showing. We replaced the coolant temp sensor anyway. That did nothing but empty the pocketbook. Quote Link to comment Share on other sites More sharing options...
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