BMW Repair: 1995 bmw m3, bosch super 4, bmw m3

Question
a lambda probe is an oxygen sensor found at the front of the exhaust. it only runs uneven from time to time and when its idlein and some times when u are driving it. would it an spark plug

Answer
Ok, throw a set of plugs in it.  Like i told the last guy before you, a set of bosch platnium plugs work gr8.  Those bosch super 4 prong plugs make your car idle rough because the spark is too much for the car to handle.  Change you wires if you have them or check the coil packs which ever you have.  Always try to stick with bosch parts.  Change your fuel filter and air filter and check for vacume leaks.  An o2 sensor won't make your car idle rough.  It just sniffs your exhaust and tells the computer to either richen up or lean up on the o2's.  so try that first and tell me how it works out and we'll go from there.  Good luck, Rahim..