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Wagons Subaru Crew Subaru Crew MPG-Real World Numbers
87 messages, Last post on Jun 24, 2008 at 12:29 PM
You are in the Subaru Crew Forum. Your Host is kcram
Your Community Leaders are ateixeira and rsholland.
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Replying to: stevecebu (Jun 20, 2007 10:36 am) -Frank |
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Replying to: KarenS (May 16, 2005 6:33 am) - rated 23 - 30mpg EPA. Actual 100% Highway 26 - 29 mpg. Actual 90% City Short-Haul point to point - 16 - 18mpg.
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Replying to: mike205 (Jul 10, 2007 4:30 pm) 30k miles So far only did a highway trip 75-80mph, 28.x mpg I'll post back when I do some city driving. -mike
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Replying to: paisan (Jul 14, 2007 7:34 pm) 
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Replying to: ateixeira (Jul 16, 2007 7:26 am) -mike |
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Since replacing my Knock Sensor, I have seen a nice increase in MPG  . It was throwing an intermittent CEL (P0325) that specified a Knock Sensor Circuit Malfunction and was able to replace it myself (with a few hiccups) and since then been rewarded with the following jump in MPG  over the past two tankfulls. Most recent MPG results. 25.925 25.684 22.684 23.170 24.430 22.689 22.814 23.060 Now those "hiccups" were due to me leaning into the engine bay a bit too hard while doing the sensor replacement  . #1 - I unseated the cruise control cable/linkage a bit which caused a P0507 Idle Control System RPM Higher Than Expected CEL. I started hunting down IAC issues until I noticed the problem and simply resnapped the cable back. #2 - Cracked a vacuum line that operates the EGR, which led to it throwing the P0400 EGR Flow Malfunction. Fixed that with a new section of appropriated tubing. Now I can take it in for inspection with my fingers crossed. Alan 98 OBW Ltd - 139,500 miles |
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| Hi Alan. I got a CEL light myself for the Knock Sensor on my 98 GT. Do you have instructions on how to change it? | |
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Replying to: masteryoda (Oct 18, 2007 7:47 pm) Flashlight Socket wrench 8" socket extension 12mm socket Magnetic pickup tool Finding the sensor was the first issue. [copied from a Nabisco post] The knock sensor is located on top of the block, above the #4 cylinder. It should be on the drivers side, left of the throttle body near the cable linkage if you are standing in front of the engine. There may be a EGR solenoid in the way, so you need to peer pass that to see it. It should be a black round thing with a 12mm bolt through the middle, connected by one wire, but with a white 2-pin connector. Getting to it with hands and tools is the 2nd issue From the drivers side - With the socket on the extension, I seated it on the bolt, attached the wrench and backed it out. I had the magnetic pickup handy to get the bolt fully out. Put this aside as you will likely need it during the replacement, my part from the dealer did not come with a new bolt. From the passenger side - Pull the sensor out into the more open area on the left side of the throttle body. I pulled it through using where it connects to the harness. There is not enough room on the right side to get both hands in to release the connector from the harness. Unclip it from the harness and attach the new one onto the harness and thread the sensor back under the throttle body. Back on the drivers side - Again use the magnet tool to pull it into the generally area where it has to be remounted. Put the bolt back through the center of the sensor and carefully guide it back down towards the engine block. With just the extension and socket, attach to the bolt and "feel it" back into the bolt hole. Turn it counter clockwise a bit just to be sure of alignment and that you will catch the threads correctly. Attach the wrench and tighten it down, but not too tight. There are warnings that you can damage the sensor if you really overtighten it. "Plug n Play" right?!?! Clear your code(s) and start her up. Good Luck! Alan 98 OBW Ltd |
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Replying to: masteryoda (Oct 18, 2007 7:47 pm) I used a Subaru Bucks coupon so it was only $15 out of pocket. Alan 98 OBW Ltd
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Replying to: amsbear (Oct 19, 2007 9:26 am)
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