Question about 1998 Subaru Legacy

1 Answer

Miss fire in cylinder #1, 1998 subaru legacy outback

Have DTC Code PO101, a miss fire in cylinder #1. I have inspected the spark plugs but all are in good condition. A tune up was done approx. 30k miles ago. The fuel filter was slightly restricted but just barely. The wires ohmed out within spec's. Originally, had a PO103 code along with a PO325 knock sensor code. Resistance was out out range and replaced the sensor. The resistance on the coil reads good but I haven't seen it on the scope. I don't have a scope to see and read the ignition patterns. The resistance at the injector is good, 11.5 ohms.
problems occurs after the car warms up and intermittently. what am I missing?

Posted by on

  • mimissa Dec 20, 2008

    Hi, I have the exact same problem. The exact same codes comes on, we changed the spark plugs it stopped for a month and it started to do it again. Have you found the problem yet?



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Fuel injectors getting ground from pcm?

Posted on Nov 24, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2006 subaru outback, missfire code - cylinders 1 and 3. Could it be coil or plugs and wires I'm told at service shop. Anybody come across this?

had miss fires with my 92 legacy gt.typical suby fault coil packs always go out in saying that check that you dont just have a foul or failed spark plug. easy fix if it is the coil i replaced mine with 2nd hand ones from the same model usualy find them at most subaru specialists wreckers etc depending on model.

Sep 17, 2013 | 1996 Subaru Legacy

1 Answer

How do you replace the spark plug wires on 1997 Subaru outback/legacy?

Access from top is better but you must remove battery/washer reservoir driver's side and intake piping on passenger's side to get to the plugs. If you have bad back, access from underneath is fine but I'd have a ramp instead of jack for safety reasons.

Jul 18, 2017 | 1997 Subaru Legacy

2 Answers

I have a 99 Subaru Legacy (Outback, 2.5L). The check engine light has come on and the codes indicate Cylinder 3 and Cylinder 4 misfires. The light came on about two weeks ago, and occasionally disapears...

hi the cylinder misfire codes are usually pretty specific, if you have replaced the above and it still hasnt fixed the problem try replacing the ignitor or the ecu as thats all it can be left causing the problem

Jun 14, 2011 | 1997 Subaru Legacy

1 Answer

Where is #1 cylinder on 1996 subaru 2.2 sohc engine? thanks John

The #1 cylinder is located at the front spark plug on the right or passenger side of the engine, and here is a firing order diagram to help assist you.


Oct 04, 2010 | 1996 Subaru Legacy

1 Answer

2000 Subaru legacy outback 2.5L DTC P0420 code will not clear. I replaced the rear O2 sensor and the CEL is still on. I used the scan tool to clear the code but it will not clear.

that code is saying you have a problem with that system. if you go to autozone thay can print that code out for that tells you what to check. other then that you may need to get it diagnosed by a professional

Nov 22, 2009 | 2000 Subaru Outback

1 Answer

99 subaru legacy outback w/2.5 L boxer engine. Have PO 0440 obd II code. 98K miles Car misses at low RPM. Has a hessitation went you accellerate. Runs smooth at highway speeds. Replaced plugs, plug wires,...

This code is associated with the EVAP system which includes, but not limited to gas cap, fuel lines, carbon canister, purge valves. The EVAP system is supposed to prevent fuel vapors from escaping the fuel system

If you have this code, one of the following may have happened:
Gas cap not installed properly or faulty gas cap
Purge solenoid has failed
Canister is plugged and not working properly

This code can be tricky to resolve, but try some of these:
Remove and reinstall the gas cap and or replace the gas cap and clear the code and see if it comes back
Inspect the the hoses, and tubes for any sign of a hole or cut
Inspect for damage or disconnected hoses around the purge solenoid
Check and or replace the sensor
Check and or replace the purge valve

Sep 15, 2009 | 2000 Subaru Outback

2 Answers

I have a 1997 Subaru Legacy Outback AWD. The

when you replaced the plugs , was one of them (cylinder 1 ) dirty and fouled ?
I'm thinking that bad rings in cylinder would give you low compression , and eventualy cause the missfire by fouling up the plug.
There is an inexpensive product that will help with the compression by filling up scratches in the cylinder walls. It is called Restore , and it is one of the only products of its type that I have used , and feel actually works.
Unfortunately , if your rings are broken , or badly worn , nothing in a bottle will fix them.

If your car had a distributor cap and rotor , I would change them too.

May 13, 2009 | 1997 Subaru Outback

Not finding what you are looking for?
1998 Subaru Legacy Logo

700 people viewed this question

Ask a Question

Usually answered in minutes!

Top Subaru Experts


Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6918 Answers

Are you a Subaru Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides