[s-cars] Coilpacks

[James Murray (LMC)]

I've been too busy to work on mine, but I have this problem and it's on
Cylinder #4. I think it's the coil pack because it only occurs when the car
is cold, after a few minutes of warming up the car runs fine. So it sounds
like the coil is not making contact when cold as soon as it warms up the
coild expands and makes contact. I've seen this in other electric coils... I
was planning to switch the PSO's when cold and see if the problem moves
cyclinders, then I'll know if it's the PSO or the coil pack.

What do you think?

Cheers, /J.

	-----Original Message-----
	From:	CLAG500 at aol.com [SMTP:CLAG500 at aol.com]
	Sent:	October 22, 2002 10:53 AM
	To:	gailus at mindspring.com; calvinlc at earthlink.net
	Cc:	s-car-list at audifans.com
	Subject:	Re: [s-cars] Coilpacks

	In a message dated 10/22/2002 9:26:54 AM Eastern Standard Time,
s-car-list-request at audifans.com writes:

	> Reply-To: "Paul  Gailus" <>
	> From: "Paul  Gailus" <gailus at mindspring.com>
	> To: "Calvin & Diana Craig" <calvinlc at earthlink.net>,
	>    <s-car-list at audifans.com>
	> Subject: Re: [s-cars] Coilpacks
	> Date: Tue, 22 Oct 2002 07:21:04 -0500
	>
	> My read on this is that the spark plug failure was most likely
	> due to preignition / detonation from another fault in the
	> ignition system, and not the first failure that initiated the rest
	> of the problems.
	> Intermittent shorting to ground of the coil primary lead that
	> is connected to the PSO could be causing the problem. The PSO
	> itself is also a prime suspect (especially given its stellar
history
	> on this list).
	> By the way, the melted coil could have been caused by a
	> sustained short to ground in the PSO output, or somewhere on
	> the wire from this output to the coil. It's very likely that these
coils
	> are not rated for continuous current on the primary. I believe
	> another lister (Chad?) had a similar problem with a melted
	> coil.
	>
	> Paul


	Excellent memory Paul!  I did have the coil meltdown occur along
with the PSO failure exactly one year ago. AFAIK a contiuosly missing
cylinder usually points to the PSO. Also when it first starts missing it
will be somewhat intermitant and temperature related So you can change
something and have it appear to go away. I drove my car quite a way with it
missing a whole cylinder. Makes me think I should do that spark plug change
that I've been contemplating. I've also done the dielectric grease on the
back of the PSO that was suggested recently and is also suggested on Scott
Mockry's site now.

	Chad Tobin
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