She was running great. I changed out my alternator and now she is running hot. While changing the alt., I had to bend and move some radiator hoses around for the exchange. I changed out the water pump and thermostat appx 10 months ago. I'm wondering if by bending hoses and squeesing out water etc, it could have somehow screwed something up? I did refill it fyi. Thank you for your advice on this.

 

Did you make sure to bleed the air back out of the system?

Steven

 

what funky said..fill and bleed to start off with..then look for any leaks.

 

i have a 99 disco ii. for the last 3 days it has been running hot. once it cooled, i started it and there was no heat coming out of vent inside. i bought a new lower hose and a new thermostat from lr dealer. i bled the cooling system by pouring water in the bleed valve (bought new T set-up) until it filled the reservoir. now i have heat and it runs fine with heat on. i let it sit idling for 45 min. yesterday. i drove it about 30 min. yesterday. temp guage never went past half-way, but that was with heat on. when i turn on a.c. or just turn system to off, it overheats after about 10 min of normal driving. i have not been able to get it to over heat while idling though? i don't have any bubbling (boiling) in reservoir when hot but it does let off steam through res cap. i don't have waterfall noise inside. my compressor fan is operating. my top hose gets hot almost immediately. it is 100 degrees plus here in memphis and running the heat isn't that enjoyable. Please help, this is my only car.

Mike, i would love a phone call if you are not too busy. my name is brian. i am at 901-201-9791.

 

Have you replaced your fan clutch?
Have you flushed the cooling system?
What coolant did you use?

 

I've never heard of anybody doing that before..I bleed the system by pouring coolant in the over flow tank until it comes OUT of the bleed valve


btw, is your top radiator hosing getting hot?

 

Yeah, first I tried the filling reservoir and waiting for it to come out bleeder. The reason I tried the water through bleeder to fill reservoir (backwards) is that the bleeder valve is highest point of cooling system?? BTW, I had to replace the radiator, water pump, fan, fan clutch, and upper hose replaced. We hit a re-tread on the interstate (Christmas vacation) and it flew up into the engine bay and destroyed much of the cooling system. The gauge ran at the half way point until three days ago. That is when I replaced the funky looking lower hose and thermostat (parts from LR dealership). The old hose looked dry rotted and I thought that was the problem. But it was not.

 

To reply to other post... I blead the system two ways as mentioned before. The mechanic that replaced all the parts (from re-tread nightmare, mentioned above) completely flushed system but re-filled it with yellow instead of dex-cool. He said he completely flushed the engine first, so there was no dex-cool/yellow mix problems. He said that dex-cool was nothing but crap and was notorious for causing problems.

 

you need to bleed it properly. pulling the expansion tank out of its holder and holding it high in the sky when filling it. then it is the highest. not the bleed screw.