Is there anyway to test the cam sensor on a twinspark whilst off the car as removing it after involves removing the belt and cam wheel oh yes and the water pump???? Don't know if it was ok as the engine was dead when I bought it not a cheap item to replace either?? Cheers
hi got the engine in the cupbard doing a belt change the car i have was a non runner so have no idea if there are any faults with the sensor ? the engine that I have and the one that I am replacing it with I have had to remove the w/pumps to remove the sensor cable which is fed under the cam with the variator under which is a bulge that the cable is passed under . Over this is a flange of the w/pump body . This and the lump below the cam have the cable fed between and try as I might I could not get the cable out ? the fact that the sensor has a plug one end and the sensor the other meant I cant get the cable free without removing the w/pump? hence the worry of putting in the sensor not knowing if it was ok? If there is a way of replacing this without moving the w/pump I would be pleased to know but this doesn't seem possible? the other thing is that you still have to remove the cambelt to remove the cam pulley to get the sensor out? I have no idea why they chose to do it like this but it is a bit of a pain?
Does. no one know or is this a stupid question did try a search but could not see anything ? I really hate electrical testing I am just never sure wether I am testing the right bit with the right bit give me a picture and a spanner or two and I'm fine but electrics figures and watts ohms milliamps etc .. may as well be talking klingon
"Following the adoption of the sequential and timed injection system, a timing sensor has been introduced (cam angle sensor): this makes it possible to detect which cylinder is in the bursting stroke when the engine is started, in order to be able to start the correct injection sequence.
The sensor is formed of a Hall-effect device by which the voltage signal sent to the control unit "lowers" suddenly when the hollow machined on the camshaft pulley passes in front of the actual sensor; therefore a signal is sent every two turns of the crankshaft."
in other words, resistance checks are not a lot of use. Volts and an oscilloscope are the order of the day.
Ok Thankyou. I am correct in the the earlier post about fitting and removal of the sensor ? That it cant be removed and replaced with out removal of the parts I mentioned without actually cutting the cable and even then you still need to remove the cam pulley?