Brayburks

at one time I tried to clean the tps(b/c I had read about others cleaning it with good results) but I found that the sensor was held together by rivets. It looked expensive and I didn't want to damage it. I once damaged a $650 air flow meter on my 89 4-runner by poking around somewhere I shouldn't have been. Luckily I found one in a yard for $90. Is there a good/safe way to clean the tps?

Would that help? and how? Something to do with temp sensor? Is that the sensor on the rt bottom of the radiator?

I thought that may be it also. Awhile ago I pulled a code that had to do with the temp sensor. It said it was an irregular signal or something. When I cleared the codes, it never came back. It's funny, when it is extremely cold out and it is first started it runs fine. If it is in the 40's, it surges and hesitates on acceleration. It will clear up for the most part when the engine reaches norm temp, but on a load it will come back. You kind of have to feather the gas to keep it smooth. I'll have to try replacing it, but the nearest subaru shop is like 50 miles away.

90 legacy2.2 sw. 130k, MT. When the engine is cold, it seems that when accelerating you can't give it too much gas at one time. It seems to jerk and/or miss until you let up on the gas pedal a bit. It works fine if you give it gas slowly. Also, it seems that once the temp guage reaches norm temp it will run much better, but still do it a bit on a load(going up a hill or shifting when rpm's are low. You can't try to take off quickly without it wanting to jerk or surge. If you let up on the gas pedal when it starts to jerk, the jerking goes away. It almost seems like a timing problem to me. Any ideas?? thanks.

My 1990 Legacy Wagon surges during acceleration and deceleration. It lacks the smooth, even acceleration and surges or "bucks" when accelerating or decelerating. It is worse when the engine has not yet warmed up, and seems that as soon as the temp gauge rises to normal operating temp, the problem clears up, for the most part. It also seems that when there is a load on the engine(even when at normal op. temp., going up hills or upon acceleration from a stop) you can feel it. By adjusting the position of the gas pedal while driving( give it gas and then let off some), it seems that I can get better/quicker acceleration. It seems to me that it is a timing problem. It's almost like it is advancing too much or not enough, and by letting the pedal off some while accelerating, it is letting the timing synchronize with the RPM's. Just a thought. No CEL's are displayed and no codes show up now. Any ideas???? Thanks in advance for the input.

THANKS JOSH. I HAVEN'T HAD TIME LATELY TO WORK ON THE PROBLEM, BUT I'LL CHECK THAT OUT.

Before my legacy warms up it surges violently when i accellerate through the gears. It seams that if I take it easy it doesn't do it that bad. Also when it warms up, it is not as noticeable. I read in another thread that it is good to clean the throttle postion sensor, but I haven't gotten to that yet. Is there something else that I should consider??