If your resistance on the coils are 1.8ohms, would this cause a rough idle and cause the car to stall out when you give it any gas?

 

What's the factory spec on the resistance of the coil? The primary winding contains only a few turns (relativly speaking) so I would expect it to have a very low resistance.

 

The FSM said below 1 ohm.

 

Oh...Well, first make sure that your test leads are perfectly clean, as are the points of contact you are testing at. It's very odd for a coil to increase in resistance unless there was a marginal connection. Even then, normally they become open...

 

Well when I cleaned them up and took the coil out I got 1.4ohms... at any rate the coils arent getting a full 12volts. When I test the yellow/blk to the blk I get around 6volts and when I connect the yellow/blk to the battery I get a full 12v. Would this cause the car to do what it is doing? Should I reground the wires?

 

It sounds like you're not using a good ground when you are reading the black/yellow to ground- if you're using another wire for a ground, it's obviously not a ground wire. If you're reading them right, 6 volts power to the coil will definetly degrade the output. 1.4 ohms should be fineHave you put a timing light on the plug wires to verify the coil is pushing power?

Test the black/yellow to a good chassis ground (not another wire) and see what you get for an input voltage...

 

Primary resistance should be less than 0.8.

 

Yes, but with the error tolerances of most meters, there is no practical difference between 1 ohm and 1.4 ohms- it's just a coiled wire, as Aaron said above, and different power supplies (1.5v or 9v batteries) in different meters are gonna give different readings, because of the inductive reactance qualities of wiring wrapped around a magnet.

1.4 is good; when they're bad, it's broken, in other words, infinity....