240 ignition coil wiring
 

Have a 93 240 torslander estate, does anyone know which way round terminals should go on ignition coil have 4 wires 2 x blue 2 x red n white, 12v coming from blue wire was fitted to neg side ov coil which didn't seem right to me thanks Candy

assuming that's using a conventional bosch cylindrical coil, the two side terminals on the coil should be labeled '15' and '1'. pin 15 goes to ignition switched power wire (typically blue), and pin 1 goes to the ignition power module, and the tachometer if you have one (typically white/red).

Thanks for help, have now wire correctly, have changed plugs, distribution cap, rotory arm and coil. Still have no spark, have just ordered camshaft sensor but after that I am running out of knowledge, any tips where to try next?

hook a 12V test lamp to coil pin 1 and ground, crank engine, does the light blink? if it does, you /should/ be getting spark, if it doesn't, then check the ignition power module, this is a little 5 pin module thats on the left fender (at least, thats where it was on my 1992 740T). I don't have the wiring diagrams in front of me right now, but the coil pin 1 comes off that module, and there's an input to the module that comes from the ICU (Ignition Control Unit, which is under the dashboard on LH 2.4 cars). if you can determine what pin that input is, slip a thin bare wire around that pin, so you can read it while its plugged in, you should get blinks on your test light there when cranking. if you have blinks there, but not on coil pin 1, that power module may be bad. if there are no blinks on the input, then its time to look at the crank position sensor, and the ICU.

did you do the blinking light test I asked about?

where did this replacement ICU and power module come from? used parts may not be any better than what you have.

A b230 does not have a camshaft sensor - are you talking about the engine speed sensor that picks up the signal from the flywheel? Bolts into bellhousing from the top, all black, 3 wire connector at top of wirewall?

its a CRANKshaft sensor, not camshaft. yes, SOME cars (my 1993 Mercedes 300CE for instance) have a camshaft sensor also, but these Volvos never got one. pretty much every car I've seen with a cam sensor has coil over ignition and/or sequential fuel injection, and also variable valve timing.

Thanks for help guys..
 

Thanks Pierce fixed, brand new power module I fitted was faulty, found it on second test sweep after running out of ideas, I really appreciate your help, Candy... X

just curious, this defective power module... what brand, and bought from where ?