C70 - MK1 - 2.0 - 2004
I removed the spark plugs and the fuel pump fuse to conduct a compression test on the engine, Although the compression was lower than I would have liked... between 130 and 140 across the 5 cylinders still high enough to have some life left in the engine.
I have now replaced the fuse and the plugs and......no start!
Checked for fuel, rail has good pressure of fuel and I can smell it! The engine cranks but seems to have no "Spark" plugged in the iCarsoft error reader and I get a 3100 error code. Engine speed (RPM) sensor, Signal missing. I made the mistake of changing the Crank Sensor and the (RPM) speed sensor on top of the transmission. Rookie mistake, check before changing parts!
Now I have the same issue, and the same error! The crank sensor has two pins and both have 12V at the plug so I guess no break in the wire.
Could this be the Cam sensor??? or actual teeth missing!?
What do you think?






