Edited by tayto, 14 February 2014 - 12:35 PM.
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'97 Legacy random fluctuating idle on warm startup
Posted 14 February 2014 - 12:33 PM
Posted 15 February 2014 - 08:21 PM
Welcome to the USMB.
The idle fluctuation may be related to the air fuel ratio being off a little bit. The ECU does a lot of the air fuel calcs and look up table stuff from the reading it gets with the coolant temp sensor. If you have the original in the car, I'd suggest replacing it as preventative measures. They're not too much; around $25 USD.
Posted 15 February 2014 - 09:57 PM
Posted 16 February 2014 - 12:19 PM
Edited by tayto, 16 February 2014 - 12:20 PM.
Posted 16 February 2014 - 06:39 PM
Just an FYI, most people incorrectly read the tach on the dash. The small weighted hash mark just below 1,000 rpm is 750 rpm, while the darker hash just above 0 is 500 rpm. You can see what I'm talking about in this picture of my tach.
Posted 17 February 2014 - 10:24 AM
Posted 17 February 2014 - 10:44 AM
Make sure all the breather and PCV hoses are in good shape and connected properly, and check over all of the vacuum hoses for for any splits or cracks and loose ends.
Posted 17 February 2014 - 03:38 PM
I do all city miles and drive about 20 minutes one way, I'm getting 18 mpg which I'm not happy about.
Edited by tayto, 17 February 2014 - 03:41 PM.
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