91leg

My '91' turbo legacy (180k mi) runs ok until I ask it for some acceleration. When I push on the pedal, it coughs, makes a chirping sound, cuts out, then pulls hard and cuts out some more. All thru a wide rpm range. I checked ECU codes and found: 13=Cam position sensor 21=coolant temp sensor or circiut 22=knock sensor 23=air flow meter or circuit 24=air control valve or circuit I tried clearing the codes since there are so many, they won't clear. And when I connect the "self diagnostic" as well as the "read memory" connectors, the cooling fan on the radiator runs (oscillating between two speeds), several relays click and check engine light indicates 60 (when engine is running). I thought maybe the cam position sensor is going bad and possibly generated the 21 thru 24 codes. I went to the parts house and learned that they want $310 for the sensor! That made it worth investigating further. I found that the crank position sensor has ~1800 ohms, the cam sensor has~1200 ohms . . . Does anyone know how much resistance it should have? Is resistance measurement even a valid test for a sensor like that? Does anyone have any touble shooting tips other than flipping out cash for new sensors? Thanks for assistance . . .

Thank you for your info, Josh. I apologize for my slow responses; I only get online about once a month because I live in a remote area. As for the lifter, I did change my oil -- it didn't help. I removed, cleaned and reinstalled the lifter and after running it for an hour or so it quieted down. I checked out the website a bit (thanks for ref) -- nice car! Joel

Hi Josh, thank you for your reply. I am wanting to raise the ground clearance a bit. I got high centered in the snow a couple of times last winter, and since the car needs struts and tires I thought I might make it more off road worthy. I wonder if there are taller struts that i may use as well. Also after my last posting, 1 lifter started ticking real loud. Any idea what i can do about that? I'll check out legacycentral now, thank you for the suggestion.

Can anyone tell me what size is the largest tires I can put on my 91 turbo legacy sedan? (Has 15" wheels.)