megasquirt woes !

[rich]

If you have a multimeter, when cranking you shoul see 3-6v ac out the sensor

[AshG]

is it a redtop? their crank angle is 114deg and they have a vr sensor i have set a couple up now. if its a 3 wire sensor one of the three will be a shield wire. if you wasn't so far away i would pop round and get it running for you

[monsterob]

Ive tested it with a multimeter and fet just over 1v ac when cranking ? Does that indicate a knackered sensor as thats the only thing thats second hand !!
Its an ecotec so rather ghan c20xe its an x20xev same thing basically but less hp by 16 which i think the itb,s should make up with a bloody crank signal !! The original sensor was hall effect new one is vr ford zetec

[rich]

When I played with the mega jolt system I had to play around with the sensor bracket to get a good signal, mounted it as close to the pick up as possible
Are you using descent shielded cable? And earth the shield
Never seen a mega squirt system does it use a edis module to run the ignition or does the mega jolt box control the lot?

[rich]

Sorry it's 0.3-0.6v ac out the sensor, my multimeter is auto range so use to looking at the numbers, so yours sounds in range

[monsterob]

Ive got 0.3 mm between the sensor and wheel and using the shielded cable
Phil supplied in his loom. Ive checked the continuity of the cables and the earth still no joy :-(

[deezee]

Is the polarity of the cable correct? I know you get an error on Megajolt if the polarity of the crank sensor is incorrect. Then the next step is checking all the earths are good and without interference.

[robo]

Originally Posted by monsterob

Ive got 0.3 mm between the sensor and wheel and using the shielded cable
Phil supplied in his loom. Ive checked the continuity of the cables and the earth still no joy :-(

Its times like this that make a carb and a set points look very attractive

Bob