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Offline PITBULL

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over heating 300
« on: January 10, 2008, 08:26:55 »
driving my 300 last night done about 30miles started 2 drive up a hill and the temp gage started 2 creep up almost into the red but when i went over the top of the hill back 2 flat it came back down on the way home fine on the hills until i done about 30miles again then on hill it started creepin up again whats that all about?
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Disco 300tdi Manual, JE Engengering stage 2 tune, allisport Intercooler, HiClone thingy, Safari snorkel, Scorpion Racing Winch Bumper & Steering Guard, Superwinch EPi9 with plasma, 33/12.5 khumo kl71's, Beedlocked Mach 5's, Heavy Duty Half Shafts & CV's, Front Diff Guard, H/D Steering Rods, 2" Blue Springs, Pro Comp ES9000 Shocks, Scorpion Racing 30deg props, ARB Air Locker on back, Full Safety Devices Internal Roll Cage & Roof Rack, Tree sliders, Scorpion Racing Detachable Tow Bar, Cobra Daytona seats, Cb.
i think thats it... 4 NOW!
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Offline mroxo

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Re: over heating 300
« Reply #1 on: January 10, 2008, 09:34:55 »
Could be an air lock or a blocked pipe or heater matrix etc. Check the thermostat and change if neccesary. Also check thereis coolant all the way round the system. Dont leave it to chance coz it will cost you a head etc in the end when it goes pop. And remember its winter so it will get worse in the coming months.
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Offline L90OOK

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Re: over heating 300
« Reply #2 on: January 10, 2008, 10:14:55 »
Sounds like a blocked radiator to me.  Does the temp creep up on motorway runs over 60mph? 
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Offline muddydisco

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Re: over heating 300
« Reply #3 on: January 10, 2008, 10:49:44 »
Check your radiator fins have not correred or fallen away. :|
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Offline PITBULL

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Re: over heating 300
« Reply #4 on: January 10, 2008, 11:00:37 »
its fine at 65-70 if the road is flat its just when goin up hills dont think its a block heaters work fine and just had the head skimmed its seems 2be when the engine is under quite abit of load comes back down when u back off the throttle my disco got full cage roof rack and heavy duty everything so is rather heavy
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Disco 300tdi Manual, JE Engengering stage 2 tune, allisport Intercooler, HiClone thingy, Safari snorkel, Scorpion Racing Winch Bumper & Steering Guard, Superwinch EPi9 with plasma, 33/12.5 khumo kl71's, Beedlocked Mach 5's, Heavy Duty Half Shafts & CV's, Front Diff Guard, H/D Steering Rods, 2" Blue Springs, Pro Comp ES9000 Shocks, Scorpion Racing 30deg props, ARB Air Locker on back, Full Safety Devices Internal Roll Cage & Roof Rack, Tree sliders, Scorpion Racing Detachable Tow Bar, Cobra Daytona seats, Cb.
i think thats it... 4 NOW!
www.bonkas4x4wales.com

Offline PITBULL

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Re: over heating 300
« Reply #5 on: January 10, 2008, 11:01:52 »
just checked rad it looks ok just abit of mud on it
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Disco 300tdi Manual, JE Engengering stage 2 tune, allisport Intercooler, HiClone thingy, Safari snorkel, Scorpion Racing Winch Bumper & Steering Guard, Superwinch EPi9 with plasma, 33/12.5 khumo kl71's, Beedlocked Mach 5's, Heavy Duty Half Shafts & CV's, Front Diff Guard, H/D Steering Rods, 2" Blue Springs, Pro Comp ES9000 Shocks, Scorpion Racing 30deg props, ARB Air Locker on back, Full Safety Devices Internal Roll Cage & Roof Rack, Tree sliders, Scorpion Racing Detachable Tow Bar, Cobra Daytona seats, Cb.
i think thats it... 4 NOW!
www.bonkas4x4wales.com

Offline L90OOK

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Re: over heating 300
« Reply #6 on: January 10, 2008, 11:42:56 »
Remove your thermostat & try again.  If it heats up again it's certainly the radiator that is partially blocked.
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Offline Range Rover Blues

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Re: over heating 300
« Reply #7 on: January 10, 2008, 15:00:48 »
I know it generates a lot more heat but I had exactly the same with my LSE and I would have sworn blind the rad was ok, I'd flushed it and check it and all looked fine.

Well in the end I gave it a go, new viscous unit and rad, it was going to cost the same for a pair of Kenlowes and TBH even Kenlowe advised I didn't fit electric fans, so I bit the bullit.

Job done, runs as sweet as a nut and I regularly tow over 2 tonnes.
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Offline Saffy

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Re: over heating 300
« Reply #8 on: January 11, 2008, 17:21:36 »
Quote from: L90OOK on January 10, 2008, 10:14:55
Sounds like a blocked radiator to me.  Does the temp creep up on motorway runs over 60mph? 


Yep, went like that on mine, killed one 300tdi engine (misses driving, didn't notice). Replaced engine and a week later of trouble free driving the the same route on a daily basis the blocked rad tried to kill the new engine. Goes to show the Radiator cooling was hardly used normally but if ever does need it it better not be blocked....

I didn't find the fault myself, the engine supplier figured it out right away after my truck arrived to him on back of a big yellow taxi. Run truck up to temperature and feel the Rad with hand, if it stone cold in middle and warm at the side... then its probably blocked and need replacing.
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Offline muddyjames

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Re: over heating 300
« Reply #9 on: January 14, 2008, 19:10:37 »
I nearly cooked an engine as well in that very hot summer 2 years ago. Driving along by itself it was fine, up hills was fine. It wasnt until I was about 150miles from home picking up a twin axle caravan for a mate that going up a long hill it went up and up and up and into the red. luckily I could pull over at the top.

I thought the rad looked ok as well but there was mud in between the fins which I couldn't see that blocked it up and knocked some fins out too when off roading. New rad time I think for you. Not very expensive either. How does the antifreeze mixture look like? sifon some out into a beeker and put in the freezer. If it freezes add some more to the system. It also helps to cool the system, I have been told.
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Offline Saffy

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Re: over heating 300
« Reply #10 on: January 14, 2008, 19:32:34 »
On a note for clarity, what myself and I think "L90OOK" are referring to is an internally blocked radiator opposed to one covered in crud.
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Offline PITBULL

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Re: over heating 300
« Reply #11 on: January 20, 2008, 13:31:09 »
thanks for all the help put a new rad on done a 80mile trip temp didn't move  :dance:

thanks again
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Disco 300tdi Manual, JE Engengering stage 2 tune, allisport Intercooler, HiClone thingy, Safari snorkel, Scorpion Racing Winch Bumper & Steering Guard, Superwinch EPi9 with plasma, 33/12.5 khumo kl71's, Beedlocked Mach 5's, Heavy Duty Half Shafts & CV's, Front Diff Guard, H/D Steering Rods, 2" Blue Springs, Pro Comp ES9000 Shocks, Scorpion Racing 30deg props, ARB Air Locker on back, Full Safety Devices Internal Roll Cage & Roof Rack, Tree sliders, Scorpion Racing Detachable Tow Bar, Cobra Daytona seats, Cb.
i think thats it... 4 NOW!
www.bonkas4x4wales.com

Offline robert francis

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Re: over heating 300
« Reply #12 on: January 21, 2008, 10:43:09 »
hi pitbull, thats a mighty fine photo i took for you glad to see your putting it to good use, theres a good chance im going there again on saturday afternoon if no work comes in, will you and everyone be up for it if i go, let me no cheers
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