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View Full Version : 02 Legacy GT Skipping / Lurching in High Gear



Car_Owner
11-02-2011, 08:27 PM
Started a couple weeks ago. 5-Spd MT. In 4th and 5th gear, the car sometines skips and lurches for a couple seconds after I upshift. Happens in lower gears too if I upshift too early (~1500 RPM or so). I'm thinking (hoping) it's just the AF sensor. Gas Mileage has dropped about 10% since this started (27.5 MPG down to about 25). Any ideas?

Help - and Thanks

2007fuji
11-02-2011, 10:54 PM
Do you have a check engine light?

Car_Owner
11-09-2011, 12:29 AM
Yes - Sorry, I forgot to add that. But I've had the CEL for about 3 years now (P0420 - Catalytic Converter).

What's different about the car's behavior now is the skipping when shifting into in higher gear and the reduced gas mileage - both happened at the same time.

Thank you.

2007fuji
11-10-2011, 09:44 PM
The P0420 directly affects you fuel injection system...You are going to need a new cat if you want these problems to be fixed.

Car_Owner
11-13-2011, 09:11 AM
Problem Resolved. I changed the spark plugs and ignition cables.