Cam sensor?

Obliv

Registered User
I own a '90 SC, and have been having a weird problem lately.

Ill be driving around town, and suddenly the RPMs will start dropping and rising rapidly, jerking the car. If im stopped, the car will just stall. If im driving and it happens, I can hit WOT for a few seconds and it goes away. If im stopped, the car stalls and wont start again for another minute or so. The RPM gauge usually stops working for awhile after this happens as well. Would this be the cam sensor, or something else?
 
could be. To test, disconnect the connector from the cam sensor and see how the car behaves with it disconnected. It might be hard to start, but see if the other symptoms go away.

While doing that watch the main crank pulley when the engine is running and make sure it's not wobbling.
 
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