I have a 96 dodge ram 1500 5.2 and I’ve been having overheating issues. It wasn’t overheating until I changed the plenum plate. After they changed it, they’ve changed the thermostat, water pump and changed the cooling system. I’m not sure what else I could be any help would be good

 

Are you losing any coolant? Does it overheat right away?

 

No I'm not loosing coolant. Well when i turn it on it starts slow then it stops at 240 and before it would stop at 180.

 

If the coolant isn't boiling over, it could be a faulty gauge and/or temperature sensor. I'd suggest using a laser temperature gun and point it at the thermostat area to see what the temperature really is. You can pickup a laser temperature gun here - https://www.harborfreight.com/121-in...ter-63985.html

 

A 96 has two coolant temp sensors, one for the PCM and one for the gauge. A OBD2 reader with live data will show what the other sensor reads. If both agree the temp is double check your assembly steps.

 

I used my tool scanner and for the engine temp it was showing 180-187 maximum. I was driving in the highway and city. In the dash it was showing 220-240.

 

I did my plenumm plate a year or so ago and my gauge hasn't read right since. I suspect a ground issue. My gauge just goes all the way to the top.

 

On the older trucks, temp sensor is a one wire sensor, grounds thru the intake. They come with some thread stuff on 'em, if you add more, chances are, there's your problem.

 

I never had an issue with that, Of course you have to have them in tight enough to make contact(pipe thread). You may want to check it with a meter to make sure it is grounded.