Quick question I hope.
I want to test the resistance over the coil packs on my 2.0 JTS as it sounds like it is very slightly off (to my ears).
I have found the following guide by Jug
"ok, lets assume you have the most common type, a digital meter with a mode selector knob. there will be several resistance modes, each designed for a different range.
the primary winding on a coil usually has a resistance of 2 ohms, so set the multimeter mode to 200. this is usally at the bottom mode dial, at approx 6 o'clock, but it depends on your multimeter.
the secondary winding on a coil usually has a resistance of 3-5k ohms, so set the multimeter mode to 20k. this is usally at the bottom left of the mode dial, at approx 7 or 8 o'clock, but it depends on your multimeter.
primary winding: disconnect each coil pack's connector and touch the multimeter's 2 terminals on the 2 pins of a coilpack, and make a note of the reading you get on the digital display. repeat for all 4 coils.
secondary winding: reomve the coil and measure resistance from the spring that the plug touches to one of the pins (try both, only 1 will give a reading)
a result of "0" or "err" or infinite or open circuit means the coil is faulty, if one is significantly different ot the others it means it is worn and should be replaced. "
but my Coil packs appear to have 4 pins and also how am I going to be able to measure resistance across the pack when there is no current running through it? (as the above suggests the connector is removed? (probably missing something blindingly obvious).
Current Italian Cars:-
2004 Alfa Romeo GT 2.0 JTS
Previous Italian Cars :-
2003 Maserati 4200 Cambiocorsa
2006 Alfa Brera 2.2 SV JTS
1999 Alfa Romeo 156 2.4 JTD
2005 Alfa Romeo 156 2.0 JTS Veloce
2004 Alfa Romeo GT 1.9 JTD
2001 Alfa Romeo GTV 3.0 V6 Lusso
2002 Alfa Romeo 156 2.0 JTS