Trouble Codes E85 and E52

[kleon]

You guys in here are great! Please help me!

Can someone explain what the E85: Idle Throttle Angle too High?

My car is a 91 Deville, it's acting very weird, after driving for a while it starts to stumble, it seems like it's chocking it self, the more you press the gas the more it slows down, tumbles and backfires. It smells like gas big time! Could this throttle being set to high be the problem? Is it chocking it with too much gas?

And how hard is it to set back to normal? I don't want to pay too much money if I don't have to. I just recently replaced the battery and distributor cap and rotar and getting ready to do the sparks and wires but I've noticed it does this.

The first time I noticed it was on my way to san diego on the hills, it started stumbling when I asked for more power from it. The other code is the E52 which says PCM memory reset? what does this mean.?

I just want to make sure the throttle angle is causing this chocking and stumbling.

Thanks so much!!!!