I went to autozone and they ran the scanner and various codes came out. I dont recall the actual codes but I do remember that the scanner read that all the cylinders were misfiring, the O2 sensor and a speed sensor. The problem with my 99 Disco II is that I have to let it warm up each morning so It can run smooth if I dont let it warm up the engine feels that is looses power. I changed the spark plug wires and spark plugs about a month and a half ago!!

 

So when you get ready for some help, go get the codes read again, and write them down this time.

 

What brand of plug wires did you use?