Well, To Start, I have a 1998 Pontiac Sunfire, 2.4L W/ 89K Miles.


Okay, This is what its doing. When i start it up, and sit in one spot, It spits and sputters. Jerks alil' bit, Basicly just adds a bit more of a shake to it. Now, When driving down the road, No difference is noticed, unless i let of the gas, and reapply it. Then i feel it pop and jerk before it starts to excellerate again. It dogs down before it picks back up.

If i drive for more then 10 minutes, and go to stop, 2 things take place. By the time i come to a complete stops, it stalls out (or comes pretty darn close). Or, It stops, But when i go to take off, It dogs down, before it catches, Then takes off.

Now, i'm aware of an exhaust leak i have, But i don't think its causing all this,
Also, Would like to add, I've placed Fuel System Cleaner in the tank, Just replaced my Air Filter, and i replaced my fuel filter about, 12-15k miles ago. I don't know whats goin' on =(...... But honestly, I'm starting to think its getting worse

Any suggestions?
All info and help is greatly appreciated




I love to smoke Civics!...........In reverse =D

Pop To The Top!! /\ /\







I love to smoke Civics!...........In reverse =D

check your fpr, and also check your tb. it could also be your spark plugs, oh wait your a 2.4L, check your ignition coil.


-Will Ong

Well, In most cases, When Plugs go bad, You can usually hear the difference, Right?........I can't heat a difference in my engine, Just feel it.

Also, How do i check the FPR?.......And Ignition Coil?

And as far as my throttle body goes, I took off the intake pipe, and it looked fine. I cleaned it, But other then that, I don't know what else it would need done, Lol


Thanks for the help ^.^........

Also, Could i safely gap the plugs, a tad bit more then stock recomends? For better performance?




I love to smoke Civics!...........In reverse =D

GMaster wrote:Also, Could i safely gap the plugs, a tad bit more then stock recomends? For better performance?

The larger the gap, the longer the spark but the weaker it is. Oposite goes for closing the gap a bit more. In my experience, a shorter/stronger spark is better than a bigger/weaker one.


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John Leahy
'01 Cavalier Z24 - 5Speed

MaxThrottle.Com

That makes sense, I'll prolly try that.
Do you think that could be the problem?.......I planned on changin' them anyway, So i guess i'll just do that, and hope for good results.

Thanks for the help everyone
If anyone else has their 2 cents, Feel free =D




I love to smoke Civics!...........In reverse =D

Bumpity Bump Bump <_<........>_>.........o_o.......




I love to smoke Civics!...........In reverse =D

Throttle Position Sensor? Used just as good as new.

So what would ya'll recommend? =P




I love to smoke Civics!...........In reverse =D

One more bumpity......

I basicly just don't know where to start, To even find out if the problem is , what it is. Lol

I cleaned my throttle body, and its fine. There is no check engine light =/......I dunno where to start.




I love to smoke Civics!...........In reverse =D

my parents 2000 sunfire with the 2.4 also around 90,000 miles was doing this a couple weeks ago. The problem was it was missing something around 2 quarts of oil. Also, the car needed a new head gasket, and coolant is leaking into the combustion chamber.

So check your oil also, and make sure none is leaking out through the head gasket.


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