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San Antonio, TX
timing belt ok?
If you lose crank sensor signal the vehicle will die instantly,it tells your computer vital engine timing information.
I have heard of one instance where a person had the speed control on then when pulling into a parking lot the speed control never disengaged and the car jumped the parking block and hit a wall. I would give your local dealer a call and see about recalls.
multiple things going on, hands on diag. would benefit you more than we could here.
sounds like a textbook description of a bad throwout bearing noise, but it wouldn't hurt to have a tech in your area listen to it to make sure.
Get a wire diagram and find out which color wire for this circuit and trace circuit for pinched/chafed wires and test for short to ground with ohmmeter.
have had plenty of 4x4 motors go bad on these
If the canister is easily accessible I would take it off and see if it's saturated, you can usually tell right away by how much it weighs and if you can smell raw fuel in it.
I think the heat and the lights are 2 different concerns, make sure you have good ground connections for lights by load testing them. By you having to constantly add coolant it sounds like either an external leak somewhere or internal like a head gasket or god forbid a crack somewhere.
also make sure you have a good connection at battery terminals,especially if you have aftermarket terminals.