Hello all, i have a 2001 Ram, 5.9 4x4, i am having numerous problems

1. 90 % of the time the Driver side door lock doesn't lock/unlock with the factory key fob or the door switch
2. 90 % A/C doesn't blow air out of the vents, but the compressor is cycling
3. randomly the 4x4 dash light flashes on and off, not at a constant rhythm. very erratic.

also my radiator is always needing water/coolant. i only use water since its always leaking out. no wet spots on the ground an have checked the engine compartment many times and cant seem to find any evidence. the radiator overflow bottle is always full, shouldn't the water be sucked back into the radiator?

any help would be greatly appreciated.

 

dash vents......vaccum issue

Doors and lights......wiring issues,bad grounds,wet or coroded plugs

water useage......bad head gasket

 

Ive had the AC problems to, It was a vaccum issue. There are some black hard vaccum lines on the top passenger side of the engine bay that broke on mine and it causes the AC to completely stop blowing out of the vents especially on acceleration. I called up the Dodge dealership and got the whole vaccum kit for these trucks with the box and stuff for like 25 bucks (brother has a discount through his body shop) It was super easy to change the stuff out and now i have strong air blowing at all times.

 

thanks i will take a look and hope its that easy. summer is coming and its way to hot in deep south texas to not have a/c.

any ideas on the electrical stuff? what would be a good starting place to look?