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Re: '99 93 starting problems Posted by JimBlake [Email] ![]() ![]() ![]() In Reply to: Re: '99 93 starting problems, Tom VH, Thu, 16 Feb 2006 08:01:05 Members do not see ads below this line. - Help Keep This Site Online - Signup |
DI cassette (aka ignition discharge module IDM) is on top of the valve cover. It looks like a cover plate for the spark plugs, but it's got 4 coils attached underneath. It's really easy to replace, just 4 torx screws & an electical plug.
It's kinda pricey to buy one if you're not sure, but if that's not the problem it doesn't hurt to have a spare. Your choice, your $$$$...
Get new spark plugs, because too-large gap might contribute to short lifespan for the IDM. Besides, plugs are just too cheap to re-use.
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