I have a neon sxt autromatic with 30k mi and am having a problem with loss of power at random times. I have not been able to find a pattern to the loss of power, but have noticed it with the a/c on as well as off, during rainy weather and dry, and cold and hot seasons, but always while I am in traffic and it scares me to death.

The symptoms are something like this: I'm driving down the road at any speed, and the car shudders and then slows down even though I didn't take my foot off the gas. I didnt notice any trouble lights come on. Then to make up for the slowing down, I press harder and harder on the accelerator until it is floored, and then the tach revs past 5k, and then the car seems to slowly accelerate again - no shuddering at all.

So this really has me scared about driving anywhere, esp at night. I had a garage look at and they said there wasn't much they could do because a code wasn't thown. They didn't even pop the hood to look. I had a friend pull trouble codes out and P1684 and P0320 were listed in that order. I really don't know what to try next - any suggestions on what I could look at?

thanks!

 

1684 doesn't mean anything, other then you disconnected your battery within the last 50 starts.

0320 Crankshaft position sensor reference signal cannot be found while the engine is cranking.

That one might be your problem. Do you have a big stereo? That could cause serious power draining when the A/C is going. But i don't really know, you put down too many symptoms. LOL. I'd take it to a dealer. Did you do anything to it recently that might have caused some of this?

 

my OEM coilpack start to act up at around 30k. get a msd coilpack for an oem replacement or get the screamin demon.