Help! Check engine light on, crazy engine sounds!
So...I just got my jeep starting again not even three weeks ago. I had to replace my CPS, and before that the alternator, and several other problems before that... I love my 94 laredo and i care too much to junk it. So, i could really use some help, if anyone has any ideas of what it could be.
So, i was driving home from college on this terrible hot summer day, and through my blaring radio I heard something.....like a grinding noise. I turned off the radio and listened, it sounded like a mix between the fan hitting something and the idler pulley giving way. Now, the belt is relatively new, and both my idlers are in good condition. It only just started making the sound, and whenever id accelerate it seemed to disappear.
Well, this evening after work, I hopped in my beloved jeep, rolled down the windows, and started it. It continued making that same noise, but it was faint. put it in reverse, no problem, no noise. put it in drive, and all hell breaks loose! it started making the same pinging noise, and as i drove it got worse and worse, until the Check Engine light popped up. About half way home the sound was so bad it sounded like something was going to just seize up and i was going to crash. Luckily, I didn't. But the sound was terrifying. I sat in the driveway for a minute or two and just checked the sound, its bad when i idle but gets worse when i accelerate.
Does anyone have any ideas on what it could be? I dont want to put my jeep out to pasture, so please, any comments will be of great help.
UPDATE: Litterally just went outside(gave my neighbors a free show in the process, shoulda wore pants) and tried to extract codes from the thing. It doesnt work, so that sucks. Also turned the jeep on. No check engine light, and the pinging/grinding sound isnt nearly as bad. Though, i sat and listened and it gets bad when there's acceleration. Could this in any way be related to my problem getting the jeep to go past 55mph? It does this crazy rolling sound and starts to vibrate like crazy and wont shift back down afterwards, i have to slam it into neutral and step on the gas for it to switch.