Hello, I am new to this forum but I have been doing research and this is the best forum on Land rovers. Here's my problem I purchased a 2004 discovery SE about a month ago 108,000 miles The truck runs great, recently I noticed coolant on the passenger side tire and bumper I opened the hood noticed coolant spray in front of bleeder plug and coming out of the bleeder plug. also noticed the coolant coming out the reservoir escape hose the truck never showed signs of over heating truck always stays in the middle of the temperature gauge"I ordered the copper bleeder plug I read on this forum" can it be the bleeder plug doing all of this or is it something more drastic. Please advise and I've owned Chevy trucks easy to work on this is a different beast! Thanks for the advise

 

...........I'll give ya tree-fiddy foit............

 

1. The coolant temp gauge is computer driven to maintain 50% pointer location until engine death is almost certain. Not like your Chevy where you could see it creep up every few days as coolant got a little lower. A scanner or Ultra Gauge can show you the exact temp.

2. Reserve coolant cap vents at 18 PSI. If in bad shape it can vent at lower pressure. Good thing to change.

3. Shop manual set is called the RAVE. Free download below. Here's the plumbing layout page, may have a leak at a clamp, etc. Goal is no water-rushing-thru-pipes noise under dash (air or exhaust bubbles).

4. Some give up on the factory T and roll their own.

 

check the connections on the reservoir, mine had a crack on the bottom where the TB heater line returned that would only leak under pressure. Also, you might want to go ahead and replace all of the hard plastic line with hose; you'll be glad you did. That stuff is very brittle by now and cracks if you look at it wrong.

 

And the nipple on the radiator is also fragile, use care or you'll be shopping for a rad.

 

Whatever you do, keep you coolant bottle full and don't drive it if not necessary.
BMW does sell some replacement screws if needed. Make sure to bleed the air from the system when done.
Have you looked and done may major service posted at the top of this section, might want to read it because your truck is most likely ready for it, especially the inspection/rebuild or replacement of the front drive shaft before it fails.

 

Similar thing happened to me, and it was the coolant cap.

 

@ savannah buzz @ jbar & @disco mike Thank you all very much for your great advise and help and thanks for the rave tech manuals I will start ordering parts and do the work post results Thanks AGAIN for all your useful advice!!!

 

Never lose coolant.

always listen to see if your aux fan is coming on when the A/C is off.
That is a sign you can be overheating.

consider an

UltraGauge Automotive Information Center and OBDII Scan Tool

You can watch the temps live.
I just plug in a $50 China scanner and it show me the temps.

 

Is your aux electrical fan running with a/c off. If it is, coolant temp is high, around 215-200f Too high.