Permadoom question

[LCOX]

I've seen alot of negative comments here on the permatune cd units. Some calling them permadooms.

Also seen posts where they sometimes work only intermittantly as well.

My question: Is it possible for these 3 pin units to fire but to have a weak spark to the spark plugs?

[john walker's workshop]

all of the above.

[faverymi]

Wouldn't that be your coil instead?

I cut the losses and changed both. Coil and Box. They were 37 y/o I guess….

[LCOX]

Ok

Next question. On the permatune what should be the ohms readings testing it off the car. I think I've seen someone posting here on checking permatunes with a multi-meter but I'm not sure.

[manbridge 74]

Blue, black, or silver box? Potted or non-potted?

Some Permas are better than others IMO.

[Adidas]

Jeff. It's a blue unit. Have to take the cover off to see if it's potted or not. Which one gives more trouble?

[timmy2]

Have you tried Permatune's customer support? From what I've read they do a good job. No personal experience.

[manbridge 74]

This thread my help you.....

Permatune question

[larrym]

i have an old early permatune 911 unit - it worked perfectly for almost 20 yrs on the 914-6 and is currently in my Manx