legacycentral bbs

i have a 1992 legacy ss 5mt N/A and i have a weird problem! when im driving freeway speeds its fine but when i hit stop and go traffic my car jerks when i let off the gas and when i go to accelerate it jerks again like the clutch isn't grabbing but it feels like the engine. so im confused any help would be vary appreciated thanks

the SS is the turbo version of the legacy... is yours the turbo or N/A?

sorry i meant S as in sedan its an N/A thanks for the reply i am new here so any info on the problem would be greatly appreciated =)

hmmm...you wouldnt happen to have a Check Engine light on?

oh ok, just wanted to get that cleared up. Yea as SubiePrice88 said, do you know how to check your codes?

mine's doin the same thing. and i have no CEL on.

yes the check engine light comes on but its weird because it only comes on when i hit stop and go traffic and then when i get back up to freeway speeds it goes away.... and i tried to test 4 it but i cant because it disappears. When i am speeding up and slowing down a lot the light will come on and then the car seems to jerk like its engaging the clutch when i hit the gas or something witch doesn't make sense because thats not possible but thats what it feels like it also happens when i slow down its like a bucking kind motion. so i hope that helps any info??? thanks= )

Here is how to check the codes and clear them: http://www.surrealmirage.com/subaru/engine.html

well that would help if the code stays but it goes away= ( it sucks i was driving today and i hit traffic and bam the CEL goes and when i slow down and speed up it jerks like crazy! i was having some problems with the Knock censer a while back but i put a new one in and cleared the ECU! i was thinking it could be the KS again but its not throwing the code and i don't think it would cause that kind problem it seems like it has something to do with the throttle maby??? not sure so i am still stuck any any more info on the problem...thanks

what do you mean by the code goes away?

ok so originally it wasn't showing any codes when i checked the memory so i thought it wasn't storing it in the memory but now its showing a code 42 witch is the Idle Switch! thanks 4 the link SubiePrice88 = ) so now that i finally know what it is can any one give me some info on the problem???? dose this happen often? Thanks

Is the IAC valve the same thing as the Idle switch???

No, the idle switch is built into the throttle position sensor.

well the ECU is throwing a code 42 witch is the Idle switch, is there any way to fix it? i am not sure what to look for..

Test/adjust the Idle switch using these instructions.
http://www.main.experiencetherave.com/s ... sting3.jpg

If you still have the code, you may need to replace the throttle position sensor.