3rd gen 4runner sensor codes issue.

I have a 3rd gen 2000 limited 4runner with a 97 limited engine in it, 3.4L.
I backed a trailer up to my boyfriend's mom's driveway just fine. Unloaded the trailer and went to move my truck but it wouldn't start. It cranks over like it wants to. Checked my codes and had a P0335 (crankshaft position sensor bank 1). Changed the sensor cleared the code and now I have even more codes.
P0115 (Engine coolant temperature sensor)
P0100 (MAF sensor)
P0340 (camshaft sensor a)
P0773 (TCM transmission shift solenoid sensor)
P0335 (crankshaft position sensor bank 1).
Surely they couldn't of all gone out at the same time, right? If it helps any, it did start raining but my hood wasn't open so I'm not sure if that really matters much. Could my ECM be bad or shorting out maybe? All I know is I can't afford to replace all these sensors right now. Any advice is welcome!

 

Could be you got water in the ECU. It's a problem they have. Sometimes, if the trim around the windshield gets rust under it, rain water can run down inside the cab, getting into the ECU. Is the carpet wet on the passenger side? Even slightly damp? If so, you might want to get into the kick panel on the passenger side, pull the ECU out and let it dry. Put it into some rice, whatever is your preferred method of drying electronics. Make certain the plugs to it are nice and dry, too. A quick shot of electronics cleaner to each pin works very well, or just leave them off the ECU while you dry it. They'll air dry eventually. A day or so would do the trick.

Once you're sure the ECU is good and dry, take the covers of it, and look for burn marks, burned components, lifted runs, and so forth. Any sign of stuff like that, you're probably going to need to replace it.
Unless, of course, you're a retired electronics tech that can repair those kind of troubles

There may be other troubles, and this may not be your trouble at all. It's just my opinion as to what your trouble MAY be. Worth a look, though.

I wish you the very best.
Pat☺

 

https://www.youtube.com/watch?v=5-t69mMpazg

Sounds like definitely something going on. It may be power issues to the ECU or the ECU itself.

I would reset all codes again and see what comes back. If it's a bunch of random stuff again, I'd look at the ECU and the wiring to it.

 

I'll check it out today. I cleared the codes once already but 2of them wouldn't clear.

 

So I noticed that my fuel pump doesn't kick on when I turn the key. Could it be bad and in turn cause the error codes as a fluke....or is it not turning on because the ECU probably? I don't want to drop the tank and do the fuel pump if it's not needed. I'm not somewhere I'm able to have a decent tooling area out of the way.

 

Could well be the COR.

Have you tried jumping the Fp and B+ terminals in the test jack undr the hood? Does it come on when you do? If it does, it could be the COR or the MAF. open the vane in the MAF, and seee if the pump comes on. If it does, definitely be the COR.

COR is about $65.00, and very easy to replace. Again, it's possible that it was getting water in it. Or, it may just have gotten old and failed. They do that.

Good luck!
Pat☺

 

COR = Circuit Open Relay
MAF = Mass Air Flow

Had to google COR...very rarely see that.