Hello, I have a 1991 Oldsmobile 88 Royal with the check engine lights on. I've been trying to get these two codes off for the longest.. Code 34 is the MAF sensor right ? I have replace about 3-5 off these from the junkyard and cleaned them with MAF sensor cleaner on my car and it'* still not fixing the code.. Its getting power from the wire ( 11.8V). I'm really lost on that one.. The other code is code 41 (Cam Sensor Circuit). I replace the Camshaft position sensor and that didn't work either.. I'm trying get the car to TDC for me to see if the cam Magnet (interrupter) is broken. How do I rotate the engine for me too see it? I took all the spark plugs out and removed the Water pump pulley..
This guide is great.. but I just don't really know how rotate the engine. Code 41: lost cam magnet in 3800