Cat 330 Engine Overheating
Started having overheating problems en route to Colorado Springs from my home in SW Oklahoma. Looked like a stuck thermostat. Engine would function fine for miles, then suddenly start to overheat. ...
Forum Discussion
Trackrig wrote:
If more work has to be done and it hasn't been done already, change out the white plastic antifreeze expansion tank on top of the radiator. The heat of the engine destroys the plastic over time. It's easier to do in the shop than on the side of the road. Ours just happened to go bad in front of a diesel shop that happen to have one on hand in Billings, MT. I had read about them going bad and the shop said it was a known problem in the DPs with a C7.
Bill
I had mine changed out because it was spider cracking at the rear, this in it self did not cause overheating and not necessary to change unless it has signs of potential damage or leaking. I think because of the rear exposer to the sun through the rear grill, not engine heat caused this cracking as it was only on the rear. I covered the new one at the rear with metal duct tape and shows no sign of exposure or heat wear damage at present. (five years ago)
