I have a 99 2.5rs,
I had a check engine light for a misfire so I put on all 4 new plug wires and ngk plugs, reset ecu and the car ran fine.
A couple of days later,
When the car is idling the rpms pulsate up and down.You can see the tach move a little bit. the car runs good once you are driving. But at idle it pulsates and then drops down to around 400rpms and throws a check engine light. then the rpms will go back up to about 1000 then drop again.
So I borrowed some parts from a friend.
I changed the coil pack, front o2. I put in a new air filter, fuel filter, pcv valve and changed all fluids. I also ran a tank of gas with injector cleaner.
So what could it be? Could it be a bad injector, tps.
Thanks
Jeff
http://community.webtv.net/Rim2001/Subaru
I had a check engine light for a misfire so I put on all 4 new plug wires and ngk plugs, reset ecu and the car ran fine.
A couple of days later,
When the car is idling the rpms pulsate up and down.You can see the tach move a little bit. the car runs good once you are driving. But at idle it pulsates and then drops down to around 400rpms and throws a check engine light. then the rpms will go back up to about 1000 then drop again.
So I borrowed some parts from a friend.
I changed the coil pack, front o2. I put in a new air filter, fuel filter, pcv valve and changed all fluids. I also ran a tank of gas with injector cleaner.
So what could it be? Could it be a bad injector, tps.
Thanks
Jeff
http://community.webtv.net/Rim2001/Subaru