I have a 95 ram 1500 5.9L auto. Everytime I haul something or have it under a load the truck starts to get hot. It usually lays just below 200 and when I'm hauling it will climb to the otherside of the 200 mark. It's never hit red the most was halfway between 200 and the 260 red line. It comes back down after a bit thou. I've changed the thermostate,clutch fan, all new fluid, properly bled the system. I hollowed out the cat converter. My plenum is still good. I checked through the throttle body. My only concern is I can't get all the air out. I've bled it 100 times and I still hear waterfall under the dash when I first start driving. I've even raised the vehicle passenger side and let it idle for an hour. I'm not sure if theirs still air or my problem is elsewhere

 

Common issue... check for "burp my truck" to get a procedure.

 

I've burped and burped and bled and I can't get it out. I've tried everything

 

Perhaps its time to toss in the towel and hire out?

I have air entrapped in mine, but I have several other higher priority issues taking my focus.

 

The truck only has 60k original miles garage kept no rust. And I live in pennsylvania< rust belt> that is the only thing wrong with the truck. It gets slightly warm under a load. And I don't trust any mechanics. Every time I take a vehicle somewhere it comes back with a scratch or something messed up. And I like knowing the job was done right. What does a shop have that I dont. I have all the tools. Garage lifts everything. There has to be a way to get the air out. Maby someone has a better method. The air Is probably trapped in the heater core right?

 

Best you can do is to park it on the steepest incline you can find with the nose of the truck up and let it run. Start with a cold motor and take the radiator cap off. Fire it up and give it a couple minutes to warm up. Then, with a jug of coolant handy, hold the throttle open with enough RPM's to make the coolant level drop in the radiator. Fill the void while holding the throttle open and put the cap back on. Then let the truck warm up completely before you back it down or drive up the incline. Wouldn't hurt to burp the throttle a few times first.

My '98 will completely burp itself doing this on the incline up to my garage (7-10 degree slope). My '95 Dakota I have to do it on a hill in town that is nearly a 5% grade. Both trucks need the upper radiator hose contorted to get the preliminary air bubbles out before I start the process. Any extra coolant in the system will find its way back to the overflow tank.

 

I'm assuming they can probably purge the system using a coolant flushing machine, but I haven't tried to confirm that. Perhaps call around and ask how they solve the issue.

 

flush and fill it with water and drive a few miles with the radiator cap off

 

I have a really steep hill behind my house I'll try it there. So when it's cold open the cap start the truck. And hold the throttle open abit to get the fluid to go down. Then fill the fluid while holding the throttle then put the cap back on. Then let off the throttle and let it warm up before I move it. Another weird thing I noticed is I can open the rad cap when the truck is warm with it spraying. Is that cause there's air in the system still? It's a new rad cap. The overflow goes up and down with the motor temp so it seems to be working

 

The temp gauge creeping up a bit when you put a higher load on the engine is normal.