Re: [DML] Changing Coil

[Louie Golden <louie@xxxxxxxxxxxx>]

This is the only time I can ever remember disagreeing with David T! I actually put a new coil and spark plugs on my old DeLorean a couple of years back, and it was like I had dropped in a new engine in the car. People often forget that the ignition system wears out, corrodes, and needs replacing just like any other aspect of the car. After 23 years, it's a good bet your car's ignition system isn't what it once was, and could benefit greatly from a replacement. Besides oil filters and air filters, your spark plugs and coil are the most disposable parts on the car. I can GUARANTEE you'll feel a difference if you replace them. I do have to agree with David in one aspect- if you're going to replace the coil, do the spark plugs and wires too. It's one of the cheapest and easiest maintanence things you can do to your car, and also one of the most important IMO.  You'll get a more complete burn of the fuel in the cylinder which means better performance and gas mileage. Especially if you're going to go to a hotter coil, you really need to invest in new wires. Adding more power to corroded cracked old wires will only exacerbate wear, and you may notice a DIP in performance. It's only $50 extra... go for the wires if you're going to upgrade the ignition.

Louie Golden
VIN 5252 Charlotte, NC

--- "David Teitelbaum" <jtrealty@xxxxxxxxxxx> wrote:
Unless your old coil is bad you won't notice much improvement. The
dangers in going with a higher voltage coil are the following:
The old ignition wires may break down if they aren't already shot
The "hotter" coil may draw excessive currect from the ECU and burn it out.
The cap and rotor are only rated for a certain voltage level. If you
exceed it then under certain conditions you will get arc-over.
In general you can't usually get very much by upgrading one component
in a well engineered system, this is an example. On a positive note
several (maybe many) have switched ignition coils and find no bad
effects. At the very least you should consider replacing the secondary
ignition wires, cap, rotor, and spark plugs to get the full benefits
of the "hotter" coil (if any). In most cases just replacing all these
20 year old parts will do more than a hotter coil.
David Teitelbaum
vin 10757

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