I have a 2000 Chevy impala LS and it does two different things where i have to go by to figure out whats wrong with it. First, the car starts up fine but if i don't give the engine a little rev then the rpm's will start to jump up and down and the engine starts to choke out and eventually stall out after about 10 seconds of doing this. Second, car runs fine for the first 5 minutes but after it warms up car seems to have very poor acceleration power, example, driving with gas pedal half way down the rpm's will reach about 2,000-2,500 then all of a sudden just drop back down to 1,000. Basically unless i have the gas pedal full throttle, the car doesn't hold its rpms. I have so far changed the spark plugs, spark plug wires, fuel filter, electric fuel pump, catalytic converter, got the leak in the exhaust pipe fixed, tried spraying the throttle body with cleaner and got the fuel injectors cleaned. The check engine light use to come on and say cylinder misfire but after i did all this work it has not misfired ever again but still has the same problems of choking out and not holding rpm's. I'm not a mechanic but does anyone have any clue as to what is wrong with my car? thanks
I noticed it in warm weather. In cold weather you cant even tell its running. Scanner said #3 cyl misfiring like a gazillion times.Changed plugs, wires, coil pack. seemed to help till motor went. Another motor, still idles like crap at start-up.Runs fine down the road. 30+miles to the gallon on the freeway. anyone help my baby????
I hope you can help me, I have a little problem with my 2000 Impala there is a little shudder when I run from a complete stop then at 3 gear feels like another little shuddering, 3 weeks ago there was a code P0102 and I change the MAF. Before changing the MAF feels a little instability in the engine I open the hood and the engines shudder a little and there is a little variation too. After the MAF replace I believe the problem will be fixed but don�t. I get to the service and they clean the PCM after that I believe the problem will last but don�t I receive a recall 2 year ago for Fuel pressure regulator, Can you help me with this problem.
When I accelerate there is a definite hesitation but the car does not die. If you put the shifter in neutral and rev up the engine it runs fine for the rest of the trip. This is an intermittent problem and the Service Engine Soon light has never come on. It happens more often after the car warms up and then you start up the engine for a return trip. It has happened a couple of times when the car is cold but that is rare.
While driving (cold/hot) car stutters at 2000 rpm... no matter what I do to fix it. Car actually shudders until I let off the gas or punch it... Not the fuel filter and not the plugs/wiring... is it a computer problem? Will the dealership fix the problem?..
A D V E R T I S E M E N T S
I have a 2000 Chevy impala LS and it does two different things where i have to go by to figure out whats wrong with it. First, the car starts up fine but if i don't give the engine a little rev then the rpm's will start to jump up and down and the engine starts to choke out and eventually stall out after about 10 seconds of doing this. Second, car runs fine for the first 5 minutes but after it warms up car seems to have very poor acceleration power, example, driving with gas pedal half way down the rpm's will reach about 2,000-2,500 then all of a sudden just drop back down to 1,000. Basically unless i have the gas pedal full throttle, the car doesn't hold its rpms. I have so far changed the spark plugs, spark plug wires, fuel filter, electric fuel pump, catalytic converter, got the leak in the exhaust pipe fixed, tried spraying the throttle body with cleaner and got the fuel injectors cleaned. The check engine light use to come on and say cylinder misfire but after i did all this work it has not misfired ever again but still has the same problems of choking out and not holding rpm's. I'm not a mechanic but does anyone have any clue as to what is wrong with my car? thanks
- jfederico, Medford, MA, US