2000 Millenia S: Engine sputtering

[ChitownMillenia]

my baby been acting up, 2000 S, 75K. When i put load on the engine, mostly in first and second gear the engine will hesitate/sputter at that rpm and not accelerate smoothly. new oil/ clean air filter, tried some fuel injector cleaner. I guess my next step is to start checking spark plugs but wanted to see if you guys had any other info before i start taking stuff apart. It is still cold out so i would like to delay until warmer. I am guessing that if a plug is bad/dirty my coil will eventually fry and throw a code?

[bayareadave@yahoo.com]

... When i put load on the engine, mostly in first and second gear the engine will hesitate/sputter at that rpm and not accelerate smoothly....[/b]

Manual says possible causes are
intake air leak
fuel clog
fuel pressure / pump problems
fuel filter
PCM trouble
mass air flow sensor
throttle position sensor
knock sensor erratic

Mine had similar problems and it went away during my S/C replace but I replaced the plugs which were fouled and also shored up possible vacuum leaks.

[Saint_]

Well as you guess first thing to check is the vacuum leaks, broken tees. Did you replace them yet?

[ChitownMillenia]

seems like it sputters less with a full tank of gas. It never does it under normal driving, only if i punch the accelerator. I guess i will start by replacing the fuel filter. I would like it to get a little warmer outside before i start looking for vacuum problems and replacing anything in the engine bay.

[Saint_]

CEL?

[ChitownMillenia]

CEL?[/b]

nope. no cel yet.

[parasocks]

Originally Posted by ChitownMillenia

nope. no cel yet.

Sorry to bump an old thread, did you find the culprit Chitown?

I have the same problem.. Car is smooth when you baby it, but as soon as you try to punch it it feels like it's going up steps, not a ramp. Car sort of lurches, hesitates, repeat, and eventually gets up to speed.

[yel-low]

CHi has long since moved on to bigger and better places.... He no longer frequents this site.

[parasocks]

Originally Posted by yel-low

CHi has long since moved on to bigger and better places.... He no longer frequents this site.

Well then, I'm sorry he spent so much time on his signature..

[keninn]

Originally Posted by parasocks

Sorry to bump an old thread, did you find the culprit Chitown?

I have the same problem.. Car is smooth when you baby it, but as soon as you try to punch it it feels like it's going up steps, not a ramp. Car sort of lurches, hesitates, repeat, and eventually gets up to speed.

coupla questions. when was the last time the spark plugs were changed, AND, most important, WHAT plug was put in there?

next question, where do you get your gas from?