Well I didn't blow my Head gasket but my Land rover is still overheating. Would it be still a warped or cracked cylinder head or did my cylindar liners develop pores? Any ideas please help?
Didn't blow Head gasket?
- Thread starter Timmy!!!!!!!
- Start date
ptschram
Well-known member
Replace your thermostat if you haven't already. That's a pretty cheap fix and easy to do. If you can't get to one and you want to see if that's the problem, remove the thermostat totally, and see if your temp stays low.
If that doesn't do it - radiator plugged?
Check the oil - you'll know if your leaking coolant if the oil looks milky like coffee with creamer. If your coolant level is low, you might be leaking it. Check the weep hole on the water pump as well.
If that doesn't do it - radiator plugged?
Check the oil - you'll know if your leaking coolant if the oil looks milky like coffee with creamer. If your coolant level is low, you might be leaking it. Check the weep hole on the water pump as well.
sorry 1995 D1 with 119k miles. I already changed the thermastat and top hose. I am just going by what my mechanic has told me so far since he has torn off the heads and the gasket hadn't gone. So I was wondering if the liners developed pores possibly or I might have a cracked or warped cylinder heads.
rad. is fine and water pump is working. fan is also good. It is overpressurizing the coolant system.
D
DISCO_TONY
Guest
Morning Timmy,
I had this very same problem on my 94 Disco. I spent hours and hours trying to determine the "Root Cause" of the problem. I replaced my head gaskets twice, Had the heads machined, flushed the cooling system with that special acid crap... After all of this it turned out to be the radiator core.
Replaced the core and all is well.. Now I just have to put the thermostat back in so I actually can get heat out of the beast..
A good radiator shop will charge you around 350-400 for a re-core while a new radiator is almost a grand....
I had mine done in a single day.
things I recommend when taking out the radiator.
1. remove fan.. Makes it easy to remove the radiator Otherwise you have the plastic cowling to deal with.
2. don't drain on the garage floor.. I did this and I am still cleaning / degreasing the garage floor of transmission fluid, power steering fluid.
Hope this helps! The whole job only took about 2 hours.
Tony Allison
1994 Discovery Series I
"Ah Beer, The solution to and cause of all lifes problems"
Homer Simpson
I had this very same problem on my 94 Disco. I spent hours and hours trying to determine the "Root Cause" of the problem. I replaced my head gaskets twice, Had the heads machined, flushed the cooling system with that special acid crap... After all of this it turned out to be the radiator core.
Replaced the core and all is well.. Now I just have to put the thermostat back in so I actually can get heat out of the beast..
A good radiator shop will charge you around 350-400 for a re-core while a new radiator is almost a grand....
I had mine done in a single day.
things I recommend when taking out the radiator.
1. remove fan.. Makes it easy to remove the radiator Otherwise you have the plastic cowling to deal with.
2. don't drain on the garage floor.. I did this and I am still cleaning / degreasing the garage floor of transmission fluid, power steering fluid.
Hope this helps! The whole job only took about 2 hours.
Tony Allison
1994 Discovery Series I
"Ah Beer, The solution to and cause of all lifes problems"
Homer Simpson
A
agro1
Guest
First off - you don't need to pull the heads to check for a blown gasket. There are other ways to check for that...
I suggest you take a look at this thread:
http://discoweb.org/forums/showthread.php?t=8185
Lots of good advice there. Also, if your mechanic has already pulled the heads, he should be able to tell immediatly if one of them is cracked, or, if one of the sleeves has slipped. If he can't tell you this, tell him to box up all your parts and you'll have a flatbed come pick up your truck.
I suggest you take a look at this thread:
http://discoweb.org/forums/showthread.php?t=8185
Lots of good advice there. Also, if your mechanic has already pulled the heads, he should be able to tell immediatly if one of them is cracked, or, if one of the sleeves has slipped. If he can't tell you this, tell him to box up all your parts and you'll have a flatbed come pick up your truck.
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But Agro
Mechanics dont make as much checking another way
My only problem with overheating were locked thermostats 2 times, and the second time I cracked the black overflow and replaced it with a new style one.
leo
99 D1
Mechanics dont make as much checking another way
My only problem with overheating were locked thermostats 2 times, and the second time I cracked the black overflow and replaced it with a new style one.
leo
99 D1
DISCO_TONY said:Morning Timmy,
I had this very same problem on my 94 Disco. I spent hours and hours trying to determine the "Root Cause" of the problem. I replaced my head gaskets twice, Had the heads machined, flushed the cooling system with that special acid crap... After all of this it turned out to be the radiator core.
Replaced the core and all is well.. Now I just have to put the thermostat back in so I actually can get heat out of the beast..
A good radiator shop will charge you around 350-400 for a re-core while a new radiator is almost a grand....
I had mine done in a single day.
things I recommend when taking out the radiator.
1. remove fan.. Makes it easy to remove the radiator Otherwise you have the plastic cowling to deal with.
2. don't drain on the garage floor.. I did this and I am still cleaning / degreasing the garage floor of transmission fluid, power steering fluid.
Hope this helps! The whole job only took about 2 hours.
Tony Allison
1994 Discovery Series I
"Ah Beer, The solution to and cause of all lifes problems"
Homer Simpson
Thanks for the idea. I thought my radiator looked fine but I told the mechanic today to go ahead and make sure nothing is wrong with it.
1996 Disco
Ours was blowing white smoke out of the exhaust and was reported by the LR dealer to have a blown head gasket. This made for a great purchase from it's owner. Diging I learned that with the heads off look for a steam cleaned cylinder. If found there is either a cracked block or sleeve problem. With the steam cleaned cylinder being found, I elected to replace my long block (147K miles) with one out of a wreck. I think we can see a very slight crack at the sleeve/block interface. As part of the block change out I had the radiator rodded out. It was PLUGGED! Probably the cause of the crack!
I'm looking a the remainder of the cooling system now and wondering about the VC fan.
The long block I purchase has 58K miles and was $2350 deliverd.
Ours was blowing white smoke out of the exhaust and was reported by the LR dealer to have a blown head gasket. This made for a great purchase from it's owner. Diging I learned that with the heads off look for a steam cleaned cylinder. If found there is either a cracked block or sleeve problem. With the steam cleaned cylinder being found, I elected to replace my long block (147K miles) with one out of a wreck. I think we can see a very slight crack at the sleeve/block interface. As part of the block change out I had the radiator rodded out. It was PLUGGED! Probably the cause of the crack!
I'm looking a the remainder of the cooling system now and wondering about the VC fan.
The long block I purchase has 58K miles and was $2350 deliverd.
ptschram
Well-known member
Timmy!!!!!!! said:
Looked fine? You're killing me here! The only thing an external visual observation will give you is an indication it's not leaking, it gives you no idea as to the effectiveness of thermal transfer, nor flow.
At 119K miles, if it's the original radiator, replace it. I have a source for replacements for far less than a grand as an earlier poster indicated.
I replaced the third or fourth radiator in a week yesterday and have probably replaced ten since the first of the year-D'you think they go bad after a few miles? (it's been more than that, a P38, a DII, a DI, two classics... Just this month)
Peace,
PT
These threads keep coming up and everybody goes about it all wrong.
"When my A/C is on I overheat, otherwise fine"
"it's fine when it's cool out, but when it's hot out it overheats"
Come on people. Don't start replacing everything till you find the problem. The radiator is always the last thing people look at. The funny thing is that all of these people are right at 120k to 140k miles. I had a bad radiator in my 94 (same mileage), took it out, replaced it and it was fine. I could blast the A/C all day long. Muskyman had that same problem (same mileage), replaced the radiator and all was fine. The bottom line is that these radiators have a lifespan if not taken care of.
Pull the radiator out and bring it to a shop. I don't know why people are so afraid of this. The radiator is super easy to pull out.
I couldn't see this either till I pulled it out. This is the front side of the radiator by the condensor.
"When my A/C is on I overheat, otherwise fine"
"it's fine when it's cool out, but when it's hot out it overheats"
Come on people. Don't start replacing everything till you find the problem. The radiator is always the last thing people look at. The funny thing is that all of these people are right at 120k to 140k miles. I had a bad radiator in my 94 (same mileage), took it out, replaced it and it was fine. I could blast the A/C all day long. Muskyman had that same problem (same mileage), replaced the radiator and all was fine. The bottom line is that these radiators have a lifespan if not taken care of.
Pull the radiator out and bring it to a shop. I don't know why people are so afraid of this. The radiator is super easy to pull out.
I couldn't see this either till I pulled it out. This is the front side of the radiator by the condensor.
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Actually guys it was my radiator. I just had the thing rodded out and put a bottle of water wetter and have been going nicely ever since ( except for a few other issues) But I overheated with the a/c off. I can't believe this thread got brought up it was so long ago.
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