Here goes: 2001 Disco 2, V8 with 145K miles, automatic

P1300?
P1590?

P0300 - Random Cylinder Misfire

P0301 - Number 1 misfire

P0306 - Number 6 misfire

Now let me tell you what it is doing. Loss of power while driving with the A/C on. Almost like it was cutting out, then the service engine light soon came on by blinking first then constant. This place has been the best at helping me in the past so thanks so much if you have input on this problem.

Sparky

 

You need a good old fashioned tune up Sparky.

 

Thanks Spike, I forgot to mention that less than 1 year ago I had new magnacor wires and bosch plugs put in. Could those be bad or is it more detailed than that?

One other question, are all of those codes associated with a tune up?

 

I do not know what the idividual codes mean, but the random mis fire codes mean weak/loss of spark on mutliple cylinders.
SO you either have bad plugs, bad wires or a bad coil pack.
Start here, pull the plugs out one at a time and check for fouling.
Then check all of the plug wires and make sure that they are all sated correctly on both the plugs and the coils.
Then reset the codes and drive it and see what comes back.

 

Thanks again Spike. Will do.

 

The 1590 code is a rough road/ABS fault code cause your 3 Amigos are on.
The 1300 is a emission misfire.
What octane gas are you burning, ever use any good gas addiotive or do an induction cleaning?

 

I always use supreme fuel but no additives

 

With good (name brand) gas you should not need additives, if you are using no name gas then yes, every oil change add a bottle of injector cleaner.