xmtysonxm

Thank you everyone for your input. This site has a wealth of information! I will get some ISSPRO gauges coming and check for a heater core leak, replace the thermostat and flush the cooling system.

Thanks, I will do a flush on the cooling system and check or replace the crank case vent. The idiot light came with the truck and I don't really care for it. I would like to put gauges in and get some kind of chip for the truck. A buddy of mine worked for Edge Products and is telling me to not buy gauges but look for the Edge Juice + Attitude. It looks like the attitude will monitor boost, egt, and fuel pressure. Would you do mechanical gauges and the edge piece or is it safe to rely on just the edge gauges?

Hello everyone, I'm new to the site and this is my first diesel. I just picked up a 99 2500 long bed 4x4 5 speed manual. Truck has 310k on it and according to the service records the truck has been maintained well. My question is what temp should the thermostat open up at? When driving from cold the thermostat goes past 190 to probably 215 or 220 then opens up and drops back down to 180-190. It never over heats, but it is the initial opening that makes me wonder if the thermostat is sticking. When it goes over 190 the cab has a little bit of a sweet antifreeze smell but I have checked under the hood and there are no leaks. It just smells hot when it first opens up. I can drive the rest of the day and not have that issue at all. Is this normal for this truck? Truck has the idiot fuel pressure light and a 4" exhaust from the cab back.