Originally Posted by neon22
Currently I have approximately 129,000 miles, and my gas mileage has decreased to around 10mpg even thou I shift at 1250rpm. I dont know the reason but mpg dramatically increased when I cleaned the throttle body and is now around 15mpg. Occuasionly the check engine light will come on, and I receive the codes P0159 P0153. I dont know if it is normal or not but, it at rpms above 2500 the engine sounds rough. For whatever reason, when it rains the engine smooths out. A buddy has a 97 TJ Sport and he says his does the same. Is this normal? If not I was thinking it might be the belt.
Please explain your logic on this...
-1987 BMW 528e 5spd e28 - personal Panzer for the daily driven battlefield, just broken in at 300k
-1990 BMW 325i Convertible 5spd e30 - extensive overhaul in progress
-2005 TJ Sport - stuff