My97Outback

The Fuel Injection was the only thing done, not an entire upper engine check. I'm not sure if I've had an O2 sensor replaced or not...I know I had a sensor of some kind replaced. I always use Premium gas in the car, and that's not helping. So with that information, is there anything I can do to fix the problem?

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Ok I have the headlight thing figured out. Thanks. As far as the engine vibration goes, it's very hard to describe it. It's one of those things that you really have to feel to understand it. I'll do the best that I can with my description. As I'm driving and near 70mph, the car starts to develop a steady rumbling noise that sounds like it's coming from the engine. The car vibrates as well, specifically from the engine and the floor area near the pedals. It's almost as if the car is having to work harder than it normally should to suck gas through the line because the line has developed a build-up on the inside walls decreasing the amount of gas it can pull through. The car doesn't hesitate or jerk though, and the loss of power is hardly noticable. I've had a new fuel filter installed and the fuel injectors cleaned, to no avail, which leads me to believe it's not fuel related. Also, and I don't know if it's related or not, the car has a hesitation at low RPMs. For instance, if I'm sitting in line a drive-thru and lightly press the gas to pull up, the car jerks and speeds up and slows down while I'm holding the gas at one point. I've done a test and at around 1000rpm, when I hold the gas steady, the car lurches forward and slows down, and the RPMs go up and down between 500-1500rpm. Again I don't know if that's related, but thought I'd mention it.

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I have a 97 Outback that I have a couple of questions about, since my mechanic can never seem to reproduce the problem. First of all, the car has an engine vibration at around 65-75mph. Anywhere in that range, and sometimes even higher (closer to 80) the engine vibrates the car, and it seems to be accompanied by a slight loss in power. It goes away when I'm outside of this range, or sometimes when I've been at the same speed for a while. I know it's not the wheels because the ride is fine, and steering has no shakiness or anything in it. I read somewhere this might be a torque converter. Is this true, and if so what kind of cost am I looking at to repair it? What will happen if I continue to drive the car as is? Second question: How hard is replacing a front headlamp assembly? My passenger side assembly has become oxidized inside and is noticeably darker than the driver side, which is clear. Thanks!