96 grand am sputter

my wifes 96 GA has had this problem for about a year now.It has a miss while idleing and when there is a load on the car it starts chuging or sputtering.It does'nt seem to be running on all four cylinders.I have replaced the fuel fillter,air fillter,coils,coil pack cover,o2 sensor,catalitic converter,plugs, plug boots,and a fuel injector that sounded weak.If anyone has had this problem please reply.I am stumpted on this one.yhanks in advanced. c.j.

my wifes 96 GA has had this problem for about a year now.It has a miss while idleing and when there is a load on the car it starts chuging or sputtering.It does'nt seem to be running on all four cylinders.I have replaced the fuel fillter,air fillter,coils,coil pack cover,o2 sensor,catalitic converter,plugs, plug boots,and a fuel injector that sounded weak.If anyone has had this problem please reply.I am stumpted on this one.yhanks in advanced. c.j.
the grand am is a se with the quad 4 and 5 speed standerd trany.It has a/c and no power luxuries.

Did you check the timing?

no i didnt check the timing yet.do you know were it is suposed to be set at?I know on some cars it is marked by the radiator.One thing I didnt mention is when the car started this I did take it to the shop to have it fixed along with a new water pump.Wwen I got it back from the shop it did seem to run beter,but still had a slite miss to it.All they replaced was the coil pack cover.they told me that it was burnt up inside.I also replaced the same part with the same problem.THANKS FOR THE INFO.I'm going to see if I can locate a timing light tomarrow.

I was looking at the car today and conot figure out how you check the timing when this car has no plug wires.Also when I had it running(not driving)
it will run fine if I hold the gas pedal any were over 1500 rpms,but as soon as I let off the gas and then tromp it down it sputters then stops after 1500 rpms.

does anyone have a clue on what the problem could be?
well it has been almost a year now and with the little bit of time i have i still havent found the problem.I started the car today and she still fires right up with no problem,but idles very rough and doesnt have much power

I went to this site http://www.quad4forums.com/forums/forumdisplay.php?f=49 and had a look around and it sounds like you may have gotten a bad coil pack housing. Also they suggest checking the fuel pressure regulator to see if it is leaking.

I went to this site http://www.quad4forums.com/forums/forumdisplay.php?f=49 and had a look around and it sounds like you may have gotten a bad coil pack housing. Also they suggest checking the fuel pressure regulator to see if it is leaking.

We dont post to other forums. You should have PM'd him the link or something.

This is outlined with-in AF's Guidelines as shown here;

"The following situations can possibly get you warned and or your account banned:

Ignoring moderator's warnings for any of the items outlined in this document.
Heavy personal insults (includes racism, sexism or any other ism's).
Campaigning to bring back a banned member, whether in your posts or in your signature.
Criticizing a moderator's decision openly in the forum.
Making constant attacks on other members and moderators, aka, trolling.
You are underage.
Post Whoring.
Making an Alias Account.
Posting pornographic, sexually offensive, sexually explicit or objectively material.
Failing to learn from a previous suspension.
Impersonating another individual by creating an account that looks very similar to that member or by other means.
Having an offensive account name.
Scams or the promotion of scams.
Advertising other forums when asked not too.
Posting of copyrighted material and illegal software.
Continuously bumping up threads. "

This is your warning.


cj hupp,
should have made a new thread, not good to bring up old threads. Though you can so a link to a past post/thread.

But have you checked for vacum leaks on the manifold?
Cleaned your IAC?
If your spark plug gap is wrong that'll cause this.
Faulty ingnition, or its wiring harness and or connectors.
Dirty/clogged injectors, or leaky EGR valve or passages.


Good Luck!