[s-cars] Coilpacks

[CLAG500 at aol.com]

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