2001 dodge stratus pulsing problem

Hey all,
Last summer I bought a 2001 dodge stratus 2.4L with 14,000 miles on it. It had been sitting in a garage for more than a year at a 'little old lady's'
house. The little old lady put less than 10,000 miles on it, but parked by braile. No mechanical damage tho'.
Before I bought it I drove it around a bit and checked the codes at the local Autozone type store. No codes popped up. While I was driving I noticed that I could feel a sort of pulse as I drove it at speeds over 40mph. I figured bad gas at the time, but not much has changed since then.
I've put many a tank o'gas through this thing since then and the problem still exists. I don't know if it's mis-firing/engine problem or if there's a trans problem. The pulsing is only noticible while at a constant speed/constant rpm. The pulsing isn't felt during accelleration or deceleration. One problem that has happened twice since I bought the thing is that while on cruise control, traveling between 65 and 70 and going down a long hill (mountain really) the transmission droped down a gear. I dunno if these two probs are related tho'. Still no error codes and no change in severity/frequency of symptoms over past 6 months. The 'drop down a gear problem' hasn't occurred since last July.
The question is, where do I start? Highspeed/lowspeed sensors or somewhere else. Or, Am I being too sensitive.
Thanks.
chuck
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Don't know about the pulsing, but the down shifting on cruise control downhill is a feature. The cruise control does engine braking to keep your speed within 5 mph of the preset.
chuckatty wrote:

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No, no, you can't e-mail me with the nono.

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Really?
I've tried to reproduce it several times on downhill slopes but haven't been able to. I'll try again tomorrow on my way to a conference. Not many steep hills in northern indiana.
BTW: I meant input/output speed sensors, not highspeed/lowspeed sensors. I dunno why I keep doing that.
chuck

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