Vehicle & Technical > Discovery
Overheating 300tdi
extreme90:
when the head gasket went did you have the head pressure tested and skimmed ?
300tdis suffer from cracked heads which in turn couldlead to water loss
cracked blocks can lead to water loss aswel between no 2 and 3 cyl but wouldnt cause overheating
are you sure it is overheating not a dodgey sender or wire leading to it ?
strange that if the engine is nocked off then kicked back in to mins later its back to norm op......that just isnt right
also you say you go around a right hand bend and it drops.... going around a corner isnt going to make any difference to engine op tem some how :?
try some other means of keeping tabs on engine temp
ive got a digital temp gun to keep tabs on anythings temp and for when i dont believe my temp guage :lol:
just seems strange to me :?
but coolant loss, it could be head gasket again, or a cracked head :shock:
dan
bilge rat:
the water has to go somewhere, so iff its loss ? is there any excess pressure in the header tank ?. the p gasket as mentioned ?. internal heater matrix (wet carpets)?. iff you had a head prob did the head get checked for distortion, may even have a crack ?. cant think of anything else. dont think its anythng to do with lack of t/stat but it does sound like air in the system. alan......
discograham:
--- Quote from: "TheBlueySilverThing" ---when the head gasket went did you have the head pressure tested and skimmed ?
300tdis suffer from cracked heads which in turn couldlead to water loss
cracked blocks can lead to water loss aswel between no 2 and 3 cyl but wouldnt cause overheating
are you sure it is overheating not a dodgey sender or wire leading to it ?
strange that if the engine is nocked off then kicked back in to mins later its back to norm op......that just isnt right
also you say you go around a right hand bend and it drops.... going around a corner isnt going to make any difference to engine op tem some how :?
try some other means of keeping tabs on engine temp
ive got a digital temp gun to keep tabs on anythings temp and for when i dont believe my temp guage :lol:
just seems strange to me :?
but coolant loss, it could be head gasket again, or a cracked head :shock:
dan
--- End quote ---
Dan.. yep, pressure tested and skimmed... But the quick return to normal temp ? ,I don't get it...or the bit about going around corners.... perplexing to say the least... now to check out this freshly blown hose...
discograham:
--- Quote from: "bilge rat" ---the water has to go somewhere, so iff its loss ? is there any excess pressure in the header tank ?. the p gasket as mentioned ?. internal heater matrix (wet carpets)?. iff you had a head prob did the head get checked for distortion, may even have a crack ?. cant think of anything else. dont think its anythng to do with lack of t/stat but it does sound like air in the system. alan......
--- End quote ---
Gone over and over in my head all the things it could be...not the matrix, that went once before, and when the head went last time there was so much steam in the car I thought I was in a mobile sauna... no water from there, but I will run a by-pass of the heater anyway ....
Have run a hose pipe through the header and rad and therm caps a couple of days ago... also took out and flushed radiator... all seems ok in those departments....
bilge rat:
i know this is a daft question but when you fill it are you filling it through the plug in the top of the t/stat housing as well ?. alan.....
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