Hi guys maybe someone can help with my 1998 audi A6 Quattro . I have replaced all my spark plugs, my wires, crankshaft pos sensor, even my cam pos sensor. My car still wont accelerate at all. It forces it self to get to 1000 rpm then after that its perfectly time but when i put it in any gear the car wont accelerate at all the car and it will even shut off. Now my check engine like is on and flashing i have changed everything it has gave me. But it keeps telling me. Random multiple misfire and cyclinder misfire 1,2, and 3. Can someone please help me with this issue.

 

Check and make sure you don't have a leak in the air intake trunking between the air filter box and the throttle body. Also you can try disconnecting the MAF sensor (in the air box) and see if that makes a difference. If the MAF sensor is bad or giving erroneous readings to the ECU, it won't run worth a damn. The ECU can run the engine better without it, if it's bad. If the problem goes away (you'll still have the check engine light on), replace the MAF with a new one. Also disconnect the battery to clear the ECU of any crap data that may still be hanging around in RAM. This will make it forget all the bad memories of running crappy. Sounds ridiculous but it's true. The ECU is trying to run the engine with crappy data signals. Once you clear all that out, the engine will run a lot better once the sensors are working correctly again.