1991 par car coils going bad

[yeagisyeag]

Take wires A and B off the coil, connect them to one end of the ballast resistor. The other end of the ballast resistor goes to the + on the coil.

I honestly wouldn't add any if your coil is within spec.

Jim

[yeagisyeag]

Oh yeah, I did run my cart for a bit yesterday. It ran great, better than it ever had.

Jim

[Lg96gt]

Originally Posted by backyard

Isn't the module supposed to ground through the plate. Dielectric grease will insulate the two possibly causing no ground. Are you thinking about the silver grease?

someone earlier mentioned it to help dissipate heat.. i only put a glob right under the module itself, not around the entire plate, the bolts still firmly hold and ground it and it still touches for 70% of the metal plate to direct metal..

Originally Posted by yeagisyeag

Take wires A and B off the coil, connect them to one end of the ballast resistor. The other end of the ballast resistor goes to the + on the coil.

I honestly wouldn't add any if your coil is within spec.

Jim

its measuring 3.8 ohms with nothing hooked up to it. perfectly within spec i know.. I'm going to install the resistor (went with the 1.82 ohms) and see if it still runs..if it does I figure I'm not hurting anything and if I do have a fault in my system elsewhere that burnt up the first module then I'll just have a little more of a firewall in place from overheating and burning up a second one.. when the first one died it was after about 5 hours of slowly driving around a snowmobile swap meet that it got hot enough and said its done! just trying to add a little security!! i should ditch the oil pump that i don't think is working anyways, don't worry, I'm premixing) and get a mini fan to just blow on the module to keep it cool!

[backyard]

Can't blame you for the thought of extra insurance. The only downside I can see is with the extra resistance (5.62 ohms) it may be harder to start due to a weaker spark. I guess it wouldn't hurt anything to try.

[Lg96gt]

the Napa resistor although listed at 1.82 ohms ended up being 2.2. It has a system total of 6ohms flat. seem like a lot but the spark is still very strong, honestly, seems stronger than before and runs better! starts just fine when cold (yesterday was 40 when I tried it). I took it for 4.5 miles averaging 12mph (phone app) yesterday to try and get it good and hot and get it to fail and it kept going! the muffler was smoking a little so I know it was hot! I think that's honestly the farthest I've drove it since owning it! now i gotta get the brakes adjusted and figure out how to make it faster! this max speed of 15mph is killing me!

[yeagisyeag]

Awesome! Glad to hear you didn't have to spend another $120!

Jim

[backyard]

Actually what I should have said was when the resistor gets hot (been running) the resistance will go up some. This actually makes hot starting weaker than cold starting. I'd say your in good shape though. Good to hear your fixed up.

I just had to buy a coil for mine. Kinda hard to find the right one from a parts house. I am going to try and collect some information about the internal resisted coils so people can find them a little easier. If anyone has the place (napa, autozone, etc), brand, model #, primary resistance, and secondary resistance info please let me know. Actually what I would like to have is the year, model vehicle, and engine these fit because that makes it alot easier to find. Telling the guy the part is for a golf cart gets you nothing but a blank stare.

[Lg96gt]

Thanks for all the help guys! It continues to run! Now I get to start having fun, LED light bar, turn signals, brake lights, reverse lights, rebuild clutches (anyone know where to get new springs?) aiming for a new top speed of over 20mph and not sure how I'm gonna get there but it'll be fun and I'm sure this forum will get me through it! Thanks again!

[Thomas420sewd]

Help I was driving my golf cart today it was running good then on the way back it started to stall out and died lost all spark I still have power going to the coil just no spark help

[Lochlin]

Can you start a new thread? We need some specific info such as cart year if you know it.