W
watchinfaith
Guest
Hey all-
I have a 1999 Chevy Lumina, 3800 model, with 200k+ miles on it. about 3 weeks ago it started idling very erratic, but only when at a stop in drive, or in park. When i would come to a stop, the RPM's would drop from standard 900-1000k sharply down to 4-500, then right back up to 1000. but then sometimes, when i would go to engage the gas, the engine would shudder, back and forth from 500 to 1000 and shake the whole car. Also, sometimes, when i would put the car in park, it would rev up to 1500, then fall down and stall out. I took it to my mechanic, and he replaced the fuel pump and fuel filter ($600). It is still doing the exact same thing, but not stalling out as often as before. Any recommendations as to what it could be?
Thanks in advance for any and all help- i greatly need it
also, i can hear like a sucking noise or weird air noise, like a leak, but its not always there and i cant pinpoint it... dont know if that can help. through my research so far, ive found that i should check for: a fualty coil pack, bad wires, vacuum leaks, and clean the throttle body. if any of these relate, can i do them on my own?
I have a 1999 Chevy Lumina, 3800 model, with 200k+ miles on it. about 3 weeks ago it started idling very erratic, but only when at a stop in drive, or in park. When i would come to a stop, the RPM's would drop from standard 900-1000k sharply down to 4-500, then right back up to 1000. but then sometimes, when i would go to engage the gas, the engine would shudder, back and forth from 500 to 1000 and shake the whole car. Also, sometimes, when i would put the car in park, it would rev up to 1500, then fall down and stall out. I took it to my mechanic, and he replaced the fuel pump and fuel filter ($600). It is still doing the exact same thing, but not stalling out as often as before. Any recommendations as to what it could be?
Thanks in advance for any and all help- i greatly need it
also, i can hear like a sucking noise or weird air noise, like a leak, but its not always there and i cant pinpoint it... dont know if that can help. through my research so far, ive found that i should check for: a fualty coil pack, bad wires, vacuum leaks, and clean the throttle body. if any of these relate, can i do them on my own?