Pretty Consistent Overheating
#11
RE: Pretty Consistent Overheating
Guitarz32388
1. Check your belt tension.
2. Check your radiator fan clutch (with the engine off). Make sure it is not free wheeling. The
fan should offer some resistance when your trying to spin it. The reason I say this is because you say that the engine temp goes down when the truck is moving (eg. generating more heat than idling) except that air is rushing past the radiator by ram action also.
3. If the fan clutch is ok, I would do a chemical flush (acid/base type) of the radiator and try to clear out the passages which may be clogged. Don't be over zealous in leaving the radiator flush too long since it is corrosive. It can do a job on your water pump seal.
4. Regarding Dexcool there's alot of controversy regarding that coolant. GM has had some issues with it regard
head gasket problems. IMHO it has a protective effect on the water pump impeller (from cavitation corrosion) in the LR.
LR suggest changing it every 3 years.
Ed
1. Check your belt tension.
2. Check your radiator fan clutch (with the engine off). Make sure it is not free wheeling. The
fan should offer some resistance when your trying to spin it. The reason I say this is because you say that the engine temp goes down when the truck is moving (eg. generating more heat than idling) except that air is rushing past the radiator by ram action also.
3. If the fan clutch is ok, I would do a chemical flush (acid/base type) of the radiator and try to clear out the passages which may be clogged. Don't be over zealous in leaving the radiator flush too long since it is corrosive. It can do a job on your water pump seal.
4. Regarding Dexcool there's alot of controversy regarding that coolant. GM has had some issues with it regard
head gasket problems. IMHO it has a protective effect on the water pump impeller (from cavitation corrosion) in the LR.
LR suggest changing it every 3 years.
Ed
#12
RE: Pretty Consistent Overheating
I had a problem with my A/C condensor fans.. You might want to check those out..The symptoms were the same but if my engine started to get hot I put it in neutral and put the Idle up and that would cool it down. I replaced the fans and havn't had a problem since.. I have a 98 disco.
#13
RE: Pretty Consistent Overheating
ORIGINAL: Smorgan2004
I had a problem with my A/C condensor fans.. You might want to check those out..The symptoms were the same but if my engine started to get hot I put it in neutral and put the Idle up and that would cool it down. I replaced the fans and havn't had a problem since.. I have a 98 disco.
I had a problem with my A/C condensor fans.. You might want to check those out..The symptoms were the same but if my engine started to get hot I put it in neutral and put the Idle up and that would cool it down. I replaced the fans and havn't had a problem since.. I have a 98 disco.
#14
RE: Pretty Consistent Overheating
I had an overheating problem literaly the day after I bought my 96 Disco SE7. After I replaced the thermo it still overheated. So, I removed the rad to have it flushed professionally and tested for leaks. What I found was the entire radiator ROTTED!!! You know how you can run your fingers over the flukes of a radiator and they'll bend slightly under the pressure? Well in this rad the flukes would just FLAKE off in your hand! An entire section the size of my fist had already been knocked off from riding around I presume. I'm not sure what caused such a massive corrosive breakdown, but I ended up replacing the unit. I got a good price for a used rad off line.
I flushed the system using a heater hose tap that I bought froma local parts store. Following the instructions was pretty easy. I filled it with Dexcool per some suggestions on this forum and have monitered the system regularly. My temp hasn't risen past the half way point on the gauge even with the AC running wide open and me and three buddies riding down I-20 from Augusta to Atlanta (150miles+Maybe?) in the absolute crazy Georgia heat!
I flushed the system using a heater hose tap that I bought froma local parts store. Following the instructions was pretty easy. I filled it with Dexcool per some suggestions on this forum and have monitered the system regularly. My temp hasn't risen past the half way point on the gauge even with the AC running wide open and me and three buddies riding down I-20 from Augusta to Atlanta (150miles+Maybe?) in the absolute crazy Georgia heat!
#15
RE: Pretty Consistent Overheating
ORIGINAL: guitarz32388
i really appreciate all your guys help. okdiscoguy can you tell me how to go about properly flushing my coolant.i have a pretty good idea of how to do it, except all the videos ive seen the car has a radiator filler cap. whats different about the discovery in that respect.
i really appreciate all your guys help. okdiscoguy can you tell me how to go about properly flushing my coolant.i have a pretty good idea of how to do it, except all the videos ive seen the car has a radiator filler cap. whats different about the discovery in that respect.
hope this helps
#16
RE: Pretty Consistent Overheating
Hey guys just wanted to let you know I got my radiator cleaned. Apparently it was only like 20% effective. I drove it home a good half hour today which has been the hottest day this summer think with the AC on and my car didnt overheat. I have to drive tomorrow and the next day hopefully i wont have any problems. Thanks to everyone who helped. Now 've got to go start a new topic.
#18
RE: Pretty Consistent Overheating
ORIGINAL: 98roverguy
Mine went out at 72,000. I went with Arizona Performance Radiator http://www.performanceradiator.com/locations.php. They were cheaper and obviousy have a different design.
Mine went out at 72,000. I went with Arizona Performance Radiator http://www.performanceradiator.com/locations.php. They were cheaper and obviousy have a different design.
#19
#20
RE: Pretty Consistent Overheating
ORIGINAL: N.Franklin
Which model did you go with, the aluminum or copper/brass? Which is more efficient, and which would last longer?
ORIGINAL: 98roverguy
Mine went out at 72,000. I went with Arizona Performance Radiator http://www.performanceradiator.com/locations.php. They were cheaper and obviousy have a different design.
Mine went out at 72,000. I went with Arizona Performance Radiator http://www.performanceradiator.com/locations.php. They were cheaper and obviousy have a different design.
I don't know if the LR stock radiator is al or brass.
Regardless of type, my main interest was moving away from the LR stock radiator which is easily prone to corrosion/blockage due to it's tight core dimensions and pipe bends etc.
Thread
Thread Starter
Forum
Replies
Last Post
motoguzzi
General Range Rover Discussion - Archived
4
07-19-2007 11:28 PM