Questions & Answers for: Buick Roadmaster lean mixture

heater core replacement My 1994 Buick Roadmaster blows cold air great but not hot air. I replaced the thermostat but still no heat. Is this likely the heater core? Where is it located on this car? ...

...bank 2. That is an oxygen sensor, these sensors send a signal to the computor to adjust the rich/lean fuel mixture. When a code comes up for them, they generally need replacing. Change the

my temp goes up when my car is idle and the ac on my temp goes up when my car is idle with the ac on... I changed the thermastat, water pump, top and bottom hose that connect to the radiator.. If the ...

1994 buick roadmaster 189000 miles. The engine temperature rises when the cars sits and idles in traffic. The temperature goes back down in normal driving. Possible causes are radiator needs flushed, ...