Jumpy or Studdering when going up hills
 

This has been going on for maybe a month or so..(Jumpy or Studdering when going up hills)

If I give it more gas and make it downshift it smooths out.

It doesn't feel like the tranny is slipping. I'm thinking it maybe the TPS sensor.
It also idles rough once in a while, to the point of stalling if you don't rev it up a bit.

What do the gearheads think?

When were the plugs and wires last changed? May also be time for a good throttle body and MAF cleaning.

I agree plugs and wires for sure.
May also want to add fuel injector cleaner to your next fill.

hmm...i would say...maybe your octane level is too low...i dunno why that immidiately comes to mind...

or basically plugs, wires, vacuum, coils? not sure other than that

EDIT: sorry about the octane thing...darn it, I KNOW better than that! very sorry. I did feel strongly about the plugs & wires.

sounds like when I had my misfire code p0300 i believe.

I had the exact same problem and "fixed" it by replacing 3 of the 4 motor/transmission mounts (1 broken and 2 worn). I don't know for sure if the mounts were the cause of the problem, but the symptoms are gone at least.

x2

I'm on board for possible plugs/wires and general tune up first.

1. plugs

2.wires

3.coils(if above fails and they are orig. high miles ones)

time for a GOOD tune up.....

I just cured the exact same problem this past weekend with new plugs and wires. Runs like top now. Just waiting for the next thing to break or go bad.... :roll:

Wow, this one went WAY out in left field.

Lower octane fuel will NOT cause misfires. It retards timing evenly.
Vacuum leaks are most apparent at idle, not cruising.

This is an ignition problem. Plugs and wires as stated (stay away from Bosch, and stay away from ALL platinum plugs. Copper or Irridium only). Stay away from Bosch or Taylor wires. Both have very bad reputations here. OEM wires or Belden Premiums from NAPA are best bets.

At the same time, follow the coil pack troubleshooting in Techinfo (link at the top of the page, or search the Techinfo for 'coil'). You may also find rust on the coil secondary terminals. This is common on the Series 2 motors. If you do, clean them well with a wire brush and some scotch-brite (in the body/paint section of the parts store), and reassemble with dielectric grease. Also put some of the grease inside both end boots of each wire to keep water and such out, and make your next plug or wire change much easier.

I am experiencing a problem that sounds much like that, with the exception that it seems to worsen when rounding a sweeping curve. I almost wonder if it could be trans related.

I have already replaced Plugs, Wires, Coils, and TPS all with OEM parts. However the problem still exists.

RMP, your problem may not even be closely related. Feel free to start your own topic and be as specific as possible in your symptom description.