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Guest Message by DevFuse

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1992 Legacy Turbo (man) w/ surging issues...

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2 replies to this topic

#1 Travelinandy


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Posted 12 July 2004 - 04:29 PM

A strange (but wonderful) car with a strange problem...

I realize that there are only about 500 of these out there, but thought I'd give it a shot...

for the first couple of shifts after starting the car and heading out, the tac seems to hover at the shift point (say 3k) for a fraction and then rev up 2-500 rpm (with clutch depressed) before setteling back down as I shift into the next gear...


after a couple of gear shifts (8-12) it changes it's maddness and when you shift and press the clutch in (ex: in second and come up to a stop sign, I often take the car out of gear and just break if I'm not going too fast) the RPM's drop from where ever they are down to about 1500 and then bounce back up to 2000/2300 RPM.

it's been a stumper for many...

any ideas?


#2 Legacy777



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Posted 12 July 2004 - 04:59 PM

there's a lot more then 500 of these around. The numbers from subaru and floating around are wrong.

As for your issue. I'd say you have a sticking IAC valve. Take the tube off from the intake and spray some brake cleaner down in there. Leave it sit, then repeat once or twice more.

Reconnect tube to intake and take for a drive.

If you want to get real anal, you can remove the IAC valve from the intake to clean it.

#3 terryb52


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Posted 12 July 2004 - 08:56 PM

Just to let you know---I've got a '92 Turbo Touring Wagon. How long have you had yours and what's gone wrong or what have you discovered about yours? I've had mine for a little over a year and have put in a fuel filter, oxy sensor, trans mounts (questionable as to whether they were needed), and tuneup/fuel inj cleaning. Hope that's all I'll need for awhile (except tires this summer).

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