AZLegacy Posted November 4, 2017 Share Posted November 4, 2017 Hi folks, its been a long journey. Finally got a new motor in my 09 legacy and for a few months it was running pretty smooth. Then i had to change the starter... Today my car was kinda struggling when i was backing up and 5min later when I try to park on semi-steep hill, it CUT off on me:spin: I got it to start back up no problem, but at that point I had to rev the engine a little for it to get power and stay on. Battery & starter are new..motor has 60k miles and my car has 88k...is it really due for a new fuel pump at only 88k miles? Link to comment Share on other sites More sharing options...
apexi Posted November 4, 2017 Share Posted November 4, 2017 Do you have a non-turbo legacy? How long ago did you install the new battery, or how long ago was it since you last had the battery disconnected. Non-turbo legacies are known to act funny after having the battery disconnected while relearning. It's common to experience stalling, or near stalls if you shift into idle, or when you come to a stop. It usually goes away after 3-4 days or so, depending on how much driving you do. I followed some procedure online to minimize the weirdness, but it still happens a little regardless. what helped me https://forums.nasioc.com/forums/showthread.php?t=2209950 By the way, I had 215k on my oem fuel pump before it was replaced. Car would crank, but not start. Subaru said the fuel pump housing cracked, and that was the culprit. So they replaced the whole fuel pump assembly/housing, and that was the only reason I got a new fuel pump. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 4, 2017 Author Share Posted November 4, 2017 Its a non turbo..last time the battery was disconnected was only a few months ago when i had the starter put in. Car starts no problem, lights come on etc in accessory mode. ill double check the battery with my volt meter. I feel like at only 88k miles, it shouldnt be having issues, most of the driving I do is long distance, dont know if that matters. Thanks for the link, im looking into it. Link to comment Share on other sites More sharing options...
MilesA Posted November 4, 2017 Share Posted November 4, 2017 ...my car has 88k...is it really due for a new fuel pump at only 88k miles?It would be pretty unusual, fuel pumps can go the life of the car or at any rate I would expect at least 150K. However, I did have to replace a fuel pump on a car with only 40K on it. The pump was totally dead, probably because the car was sitting in storage for a couple years. You could test the fuel pump and fuel pressure regulator to see if they are going out. I believe you can rent a fuel pressure tester from Autozone. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 4, 2017 Author Share Posted November 4, 2017 So i started the car a few min ago, started fine. Popped into reverse and the RPM dropped instantly...then as i was backing up it died. Ill try to get it tested tomorrow MilesA. Feel like im going to have to replace the whole thing. Link to comment Share on other sites More sharing options...
apexi Posted November 4, 2017 Share Posted November 4, 2017 Before replacing the fuel pump I'd look into other things first. Personally the transmission fluid level is the first thing I'd check, it could be a problem with the transmission, the fluid, an AT sensor, who knows. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 4, 2017 Author Share Posted November 4, 2017 ill def have it checked out. Thanks for all the replies Link to comment Share on other sites More sharing options...
Max Capacity Posted November 4, 2017 Share Posted November 4, 2017 FWIW, at 248,000 miles my 05 still has the same fuel pump. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
AZLegacy Posted November 4, 2017 Author Share Posted November 4, 2017 God damn thats a lot, Going to try the full ECU reset today and see if that helps. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 4, 2017 Author Share Posted November 4, 2017 Well i really do not know what to say other than thank you. Not sure if this fixed 100% but my car is sounding/driving incredibly better. After the test... Started up fine, popped it in reverse & the RPMS dropped to i wanna say 100 for a moment then bounced back up to around 500(My heart stopped) BUT No cut off. I drove around my block a few times, JUST in case the car shut off...slow, fast, reversed a few times, crushed a coke can in the street. Everything went smooth. Not 100% sure if this fixed my issue, but what really shocks me is how the car is driving now. Ive driven this car across country and back..Too and from mexico and canada, all over manhatten, queens etc and honestly i never remember it being this responsive. The throttle is in perfect sync. I get zero delay now between me pushing the throttle and the car moving. Makes me wonder how many subies(or any car) are unsold because of sluggish performance due to the throttle not being synced correctly..The following should really be a sticky. Highly reccomend this to anyone with throttle response issues... Below is the same thing as the other thread just a shorter version. Thanks again guys, ill keep you posted if anything changes. *Engine must be stone COLD. **Turn off all electronics(Radio, lights, AC, etc) ***DO NOT PUSH THROTTLE PEDAL AT ALL DURING ENTIRE PROCEDURE. 1- Disconnect battery & leave off for 10min. Clean terminals and posts if needed. 2- Pump BREAK pedal a few times. 3- Reconnect battery & Insert key into ignition. Turn key to accessory mode(right before start.) Wait 10 seconds. 5- Start car & remember DO NOT TOUCH throttle pedal. 6- Leave car running until radiator fans come on (Took 25min for me) 7- Turn off car & take key OUT of ignition. Wait 10 seconds. 8- Finally, put the key back in and start her up, take it for a spin and monitor how it drives. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 7, 2017 Author Share Posted November 7, 2017 Car still driving smooth. Have a hard time telling when my car is on now. Only concern is low idling at around 300rpm, but not rough at all. Im thinking about doing a cleaning for the MAF and throttle body..stay posted Link to comment Share on other sites More sharing options...
AZLegacy Posted November 7, 2017 Author Share Posted November 7, 2017 Actually i was reading the gauge wrong, its around 700rpm Link to comment Share on other sites More sharing options...
apexi Posted November 7, 2017 Share Posted November 7, 2017 700rpm is fine, that wouldn't worry me. Give it a little more time if it feels lower than usual/before. Link to comment Share on other sites More sharing options...
AZLegacy Posted November 7, 2017 Author Share Posted November 7, 2017 Yea it seems to be fine, took a drive tonight since the weathers nice and it went great. No cut-offs or rough idling. Link to comment Share on other sites More sharing options...
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