Jump to content
Ultimate Subaru Message Board

2002 Impreza 2.5 TS died on the road and won't start


Recommended Posts

I have a 2002 impreza 2.5 TS that was purchased at the beginning of this year. Check engine codes have come on and off over the last 9 months and the engine has progressively shown less power over time. I thought it was misfiring, because whenever I put any load on the engine it would chug like it was misfiring. Spark if good, coil pack is good, spark plugs are good. The chugging became worse and worse over time to the point where it would chug even with a small increase in speed or hill, and eventually one day just quit on the road and hasn't been able to start up since, (unless I give it a lot of gas and it was attempt to stay idle erratically). I put injector cleaner in the gas tank while it was still running, no improvement. The fuel pump noise come on when I turn the key to the on position. 

Where should I go from here? Pull the injectors and replace? Might it be something else?

 

Codes:

P0420: catalyst system efficiency below threshold

P1507: idle air control system malfunction

P0456: Evaporative system leak detected (very small leak)

 

 

Link to comment
Share on other sites

if it has never been done, the timing belt system is 5 years overdue. The schedule calls for 105K miles OR 105 months.

 

definitely check for slipped timing. Even if it was done previously, it may not have been done with proper attention to the idlers and tensioner. The toothed idler especially is prone to failure.

 

I wouldn't rule out the possibility of having multiple problems based on those trouble codes either.

Link to comment
Share on other sites

On my 02 legacy, the only time that it started to miss at normal speed, the ignition wires were soaked with oil.  There are probably many things that could cause the problem, but that is one thing to check.  Of course pull the spark plugs and gap them if they look OK, although its an unlikely sourse of the problem. The oil on the ignition wires comes from the tube gaskets which are part of the valve cover gasket pack. 

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...