What makes a Subaru Legacy Run rough at idle?
Enter your ride HERE to be a part of this month’s Outback of the Month Challenge! I have a 2002 Legacy 2.5 that has an idle surging issue. Here is the breakdown: Engine was running rough and surging at idle and would eventually stall. It needed head gaskets, timing belt etc. so I pulled the engine and did all the work.
Why does the engine light come on on my Subaru Legacy?
The engine light on your Subaru Liberty, Legacy, Impreza, WRX, STI, Forester, Tribeca, Exiga or BRZ might come on for a number of reasons. Owners faced with an engine light will usually try to find the problem in the owner’s manual. But this manual is very broad and doesn’t have the detail required to help with diagnosis.
What do the codes mean on a Subaru?
Modern Subaru cars have evolved complex electrical management systems and are highly technical. From the seat belt restraint system to the engine management system your Subaru is electronically controlled, with over 90 specific Subaru codes used to diagnose faults.
Why is my Subaru Outback surging at idle?
Surging. One or both of those sensors is failing. Or, you didn’t get all the ground lugs attached from the engine harness to block and firewall. I unplugged the intake manifold pressure/temp gauge while the car was running and on the colder side.
How do you ground a Subaru Legacy International?
Here is a link to someone elses Subaru Legacy International • View topic – Grounding mod question .There are pics further down on the page. It is not quite how I did it but it gives you a pretty good idea. I just went to either side of the intake manifold, and to the two strut towers.
What should the fuel pressure be in a Subaru?
Flow tested injectors, all flowing at 900cc (de-capped stock injectors) at 3Bar. 7. Installed a fuel pressure gauge, shows exactly specified fuel pressure (3 bar). Just today I installed a new Walbro fuel pump, problem did not change.
Are there any major leaks in a Subaru?
3. checked plugs (tips are clean, no fouling, they look descent). 4. pressure tested inductions system for major leaks, etc, nothing. 5. Cleaned both MAF’s with sensor cleaner, re-tried both of them. 6. Flow tested injectors, all flowing at 900cc (de-capped stock injectors) at 3Bar. 7.
Why does my Subaru run poorly at idle?
Ever since I got the car it has idled poorly, but always ran fine once off of idle. In the process of diagnosing the bad idle, I replace several parts (coils, O2 sensor, etc).
Enter your ride HERE to be a part of this month’s Outback of the Month Challenge! I have a 2002 Legacy 2.5 that has an idle surging issue. Here is the breakdown: Engine was running rough and surging at idle and would eventually stall. It needed head gaskets, timing belt etc. so I pulled the engine and did all the work.
What causes idle surges in a Subaru Forester?
The O2 sensor (s) are very important for correct engine operation. They DO wear out with time. SiriusBlackOp July 5, 2016, 9:35pm #7 Take a close look at this: If you encounter a driveability concern such as idle surges or whistling, it may be caused by carbon buildup on the Idle Speed Control (ISC) valve.
What causes a Subaru Impreza GC8 to stall?
All the sensors were appearing fine, we pulled out the throttle body and it was pretty gunked up. We cleaned that and the air box out and everything is running much more smoothly now, a steady idle at 750 RPM’s. Thanks again for your response, shaz. Not a problem, cleaning anything completely spaced my mind. Glad you figured it out though.
Why does my Subaru hesitate when I accelerate?
Subaru 2004 2l auto tip tronic. It seems to hesitate or have slow or lack of power when you accelerate slowly Just resolved a similar problem on ’03 Forester 2.0 turbo. Car would not respond for 2 to 3 seconds when the accelerator pedal is pushed. Also, when it finally kicked in it lacked power.