Here's the story. For longer than i can remember, my 96 auto se has absolutely horrible low end power. Today, i thought it might be the throttle cable. So, i tightned it up a little and took a drive. The idle was normal and the pedal felt much stiffer but still had crap low end. So i decided to check the ecu, since the CEL wasnt on, just to make sure. Turns out it was giving me 0304. So i just figured i needed a new knock sensor. By the way, i have been getting horrible gas mileage too. However, about an hour ago, 5 hours after i tightned the cabe, i took a drive in my car. It was idiling at about 500 and less rpms, and shaking like crazy. I dont think it is related to the cable tightening. Also, this morning before my idle got messed up, i took out the air filter with the engine on, to wipe it off to see if that had any effect. I think i have a more complicated problem now than just a bad knock sensor. Thanks.

 

Couldn't you just add this to your other post?

 

Hello DaveGrun:

Search for my posts on low idle speed.
Sounds like you got what happened to me.
I checked my ECU codes and found my knock sensor was bad as well.
And then right after my idle was fairly low when going into drive with some engine vibration.

I suggest that your ECU is still in the diagnostic mode. You should attempt resetting it again. That is what my problem turned out to be.