Question about Subaru Forester

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2002 subaru forester. will not idle or take fuel properly. have replaced idle air control, coil, timing belt, etc. does not read any codes.

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Could be as simple as plugs.

check diagnositcs procedures in the FSM:

Posted on Jan 03, 2017

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Try unplugging the MAF sensor, the check engine light will come on but the engine should run almost normally. If this is the case replace the MAF sensor. MAF's seldom set fault codes.

Posted on Dec 14, 2016


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My 01 Subaru forester 2.0 is misfiring and smells really rich. It happens at idle and is really bad under load and at lower revs. It gets better but doesn't go away when the car warms up.

Sounds like you need to replace the oxygen senors. They control the fuel and the timing. The sensors tell the computer weather the engine is to rich or to lean on fuel. I hope this helps you fix your problem.

Feb 16, 2015 | 2001 Subaru Forester

1 Answer

Code po136 circuit bank 1 senser 2 (seep2270,p2271) on 2002 subaru forester

Possible causes
- Faulty Rear Heated Oxygen Sensor Bank 1
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Most likely is your rear O2 sensor malfunction.

Sep 27, 2014 | 2002 Subaru Forester

1 Answer

Troubleshooting a rough idle

The "rough idle" symptom encompasses many systems in the vehicle, which must all be checked. Is the "Check Engine" light on? Have you had the codes read? (Codes can be read and interpreted on your Cadillac using the air conditioning controls, the procedure for which can be found online using any search engine.)

Generally, especially on a car as old as yours, you will most likely need a MAJOR TUNE-UP. You will need to check all of the following:
  • Condition of the fuel in the gas tank (especially if the car sat dormant for six months or more);
  • Operation of the idle air bypass (Idle Air Controller);
  • Cleanliness of the throttle body and its components;
  • Condition of the fuel delivery system, including the fuel filter, pressure regulator, electric fuel pump, and injectors (this is the most likely suspect here);
  • Condition of the coil packs or distributor cap and rotor (I don't remember which your car has);
  • Condition of the spark plug wires;
  • Operation of the ECU (or whatever you prefer to call the computer that controls your engine);
  • Presence of any vacuum leaks or cracks in the intake manifold.
START BY REPLACING YOUR FUEL FILTER, then check for proper fuel pressure at the fuel rail. Replace the pressure regulator as necessary and, if you are not getting enough fuel pressure, it is possible that rust and debris in your fuel tank has clogged the intake strainer and may have damaged your electric fuel pump. Once you have eliminated fuel delivery issues, continue by examining your ignition system (plugs, wires, etc.).

Best of luck to you!

Jul 19, 2014 | 2002 Cadillac Escalade Ext

1 Answer

Does the 2001 subaru forester have timing belt or chain

It has a timing belt. There's a Youtube on how to replace the timing belt for a 2002 Subaru Forester, if you're a self do'er. Your 2001 should be similar or exact to it.

Nov 21, 2013 | Mazda Tribute Cars & Trucks

1 Answer

What happens if a subaru forester ignition coil fails

You have problem with coils or fuel filter,could be good time to replace.

Apr 03, 2013 | 2003 Subaru Forester

1 Answer

Subaru forester 2005 has rough idle...

Spark Plugs --change every 3 years?
Front O2 Sensors-replaced at 100,000 miles?
MAF Sensor-cleaned?
Egr System works as it should?
No cylinder misfires?
No Vacuum Leaks anywhere?
No stored codes?

Shall I keep going?

You have to work on all vehicles at least twice a year
& look for problems

Alternator has no ac leakiage
Fuel filter new
Fuel pressure good
Air filter?
Throttle Plate doesn't stick?

Nov 29, 2012 | 2005 Subaru Forester

1 Answer

Subaru Forester 1997 Model Single Turbo, Misfires when cold only and gets perfect when warm.... Air Control Valve Replaced, New Genuine Spark Plugs, New HT Lead wires, New Air Flow Meter/Sensor... Fuel...

Possible dirty fuel injector which is most common. It can also be bad oxygen sensors, vacuum leak, or worst case a leak at the intake manifold.

Oct 23, 2012 | 1998 Subaru Forester

3 Answers

Subaru forrester 2000 idles speed low

First, is the check engine light on ? If it is, you have to get it scanned to know where to start looking.
This car uses an idle air control valve to adjust idle speed.
The valve could be dirty or failing, and the throttle body could also be dirty.

Jul 03, 2012 | 1999 Subaru Forester

1 Answer

Timing belt replacement intervals

90 thousand miles. there is a 90k service that needs to be performed, which will include replacing the timing belt, spark plugs, fuel filter, air filter, trans fluid, and checking and adjusting brakes.

Oct 09, 2009 | 1997 Subaru Outback

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