My son has a 2003 1500 his proublem the cores keep cracking at the inlet an outlet tubes . They have replaced two under warranty used vehicle warranty an now they are trying to wash there hands of it saying its something besides the core . Which I,m not saying it isn,t can anyone give us some ideals of what to look for . Radiator cap an thermostat are new an they claim there bleeding the air out of the system an installed new antifreeze . But my son has mentioned he hears a hissing noise at times an close there after is when it will fail. All of this has happened in the last 6000 miles . Any ideals will be gratly appreciated Thanks George .

 

Broken motor mount allowing the engine to move too much causing stress on radator?

 

Wow never thought of that I take it you,ve had this happen to you ? I was in a hurry when I wrote the tread you did notice its the heater core were haveing the proublem with ? The motor is a V8 318 I think .

 

Sorry thought your problem was the radiator core not the heater core if your breaking heater cores I am not sure what could cause this other then a batch of bad cores from a supplyer.

 

Thats what I,m thinking I told him to pull it again an take it to a radiator repair shop an let them evaluate the craftmenship an go ahead an repair an get it over with . How are you likeing that new Challenger I seen a review on the Speed Channel with Kyle Petty an another race driver thrashing a coulple of them looks like a True Super car to me .

 

i would just replace with a new heater core unit. perferably SPI parts. when i was working for a rad shop all of the rad shops around here use SPI and Auto Cool as their main parts supplier. always have quality parts.

 

Its a real fun ride but so is the cummins.....Those were the srt8's much faster and more agile bigger brakes better rearend etc. etc.

Good luck on the repairs or replacement at least they can look at it and tell you what did it.