Neon - Jackrabbits in Second Gear

Today our car just started to "jackrabbit" in 2nd gear. It does it
about 1/2 to 3/4 of the time now...but only in second. All the other
gears work fine. Clutch pedal feels fine. Pressure is fine. We will
be moving in second, and then it kicks back...feels just like
jackrabbit gas. We can’t find anything in any troubleshooting books
for symptoms like this. Anybody know what is causing this?

 

check engine mounts, particularly front one.

 

My car has even more issues now. The weird thing is that this has all
happened in 2 days! It does that "kick" in 1,2,3 gears.
Occassionally 4th. When going on the highway...I’ll be in 5th gear
and when it hit about 70 it does that kick.

I was in Baltimore yesterday in standstill traffic and all of a
sudden, the RPMs reaved up like I was hitting the gas, but I wasn’t.
Just had my foot on the brake. (Sounds possessed to me).

The spedometer has also gone haywire. It jumps around (normally
within 15-20 miles of what speed you are going). When I am stopped it
says I am going 10 miles an hour...and still is moving a little bit.

We read the codes on it...just got code 55 which is End of Codes. We
are baffled and don’t want to pay $75 for the shop to do the exact
same tests we’ve done.

It really sounds like it has to be one problem since everything has
happened within 2 days.