Saturn SW2 Questions

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The only way to stop them is to turn the ignition off
I got a 97 saturn sw2 automatic. This issue started with losing reverse, I did some research and found out that the input shaft nut can come lose. I ended up taking the tranny cover off and tighting the nut. Put iy bacl to gether with new fluids and filter.. had reverse then! Couple days later all of a sudden it starts shifting funny, like instead of going into 3 it would downshift into 2nd and would not shift into Drive or Over drive.. so I took valve body off cleaned everything n looked over the guts of tranny. All looked good.. Put it back together and now it shifts hard in 1st to 2nd won't go to 3rd, shifts hard into reverse nperformance doesn't work now..
Any clue on my issue?
should i replace my fuel filter before the pump or after
I have a customer in need of this item.
need repace a bumper and fender right on a 2000 saturn lw2 but will a 99 saturn sw2 work
I would be driving then my battery and oil light comes on then it dies and starts right back up
Cycling on/off brings it back quickly. Feels like computer, not valve body. When this happens it brings up the check engine light and it won't shift right for days. Then every thing is fine for a while but not long. Is this my engine CP running amuck? You never know what or what starts it, but switched off to on brings it back to default and runs poorly.
If you drive the car for a while and park it it may not crank. If we disconnect the battery and wait a while the car will crank. The check engine light may or may not be own.I've had it on the machine to test but they never find anything. I was told it may be the computer.
The heat is not working at all.
Battery light comes on had it checked said it was bad generator how do i replace
Bad generator how do i replace
My service engine soon light came on. Could it be due to the fact that the plug for my fan isn't connected? When I connect the plug the fan doesn't run. But when it's disconnected it run on high all the time. There is also a strong smell coming from my car , like a mix of gas and coolant. Please help. I'm running out of options for my baby.
Don't know jack about cars so please bare with me, also not positive on the engine being DOHC or SOHC
92k miles and recently put in oil and coolant
temp gauge not even to half way point.

I was driving on the HWY up a slight hill and noticed a major clanking/scrapping sound from the steering wheel and gas pedal area and it wasn't really wanting to accelerate as well as getting stuck on the rpm gauge. Quickly pulled over turned the car off and looked at it, everything seemed fine.
I started it, and almost immediately didn't want to accelerate the gas pedal and steering wheel where shaking. It sounded like the bottom of the car fell out, then white smoke from the front and back with a trail of either water, oil or coolant possibly all, the smoke was very sweet smelling and the some of the mystery liquid was brownie red. Turned the car off and called a tow truck, the guy said my engine exploded, there is a huge chunk of metal just chilling by the engine. i have pictures, my question is what happened? and why? also is it repairable or just need a new car?
I just had a new radiator and thermostat put in last week. I have had sensors replaced, new rear brake lines, alternator, battery, plus much, much more in the engine before inspection in October last year. I do know my valve cover has a small crack in it which my son will be repairing this week but the service engine light just came on today? Any ideas/suggestions on why the light may be on??? Thank you very much for your time and input.
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