I have intermitent problems starting No spark at plugs (2 times in wouldn't start, started later after a few minutes).

I tested ignition coil it shows 11860 ohms. Bentley manual says 9600-11600 is the correct range. Are does 260 ohms difference really important? Could it be the cause of a NO START? Should I replace the coil?
Thanks again
--
1987 - 240 DL 76k mi

Have you tested the power stage?
Lookin the FAQ's for more info on that thing.
--
-------Robert, '93 940t, '90 240 wagon, '84 240 diesel (she's sick) , '80 245 diesel

i see a lot of posts on this forum regarding coils. i have been working on volvos since 1977 and can count on one hand the number of coils i replaced in all those years. they can go bad or actually physically be damaged or broken, but for the most part they are a simple electromagnet with no moving parts and unless they were manufacured with a defective wiring internal they shouldnt cause any problems. usually if your chasing a problem. youll find out later that the coil did not cause the problem.

Normally resistances within 20% of the stated value will work OK.
That is why resistors are sold with a +/-20% tolerance and you pay more
for closer tolerances. For example the +/- 5% resistors have a gold band
around them. The main reason to check the resistance of the coil is to
determine if the winding is open (infinite resistance) or shorted (much lower
resistance). I think you need to look elsewhere for your problem, like
maybe the connectors between the distributor and the module, etc.

I would NOT replace a coil for that reason. Coils are pretty durable unless
you burn 'em up. No moving parts, etc. (unless you count rushing electrons)
--
George Downs, The "original" Walrus3, Bartlesville, Oklahoma

Thanks for the good information.
--
1987 - 240 DL 76k mi