Temp Gauge question - Land Rovers Only

AndrewBone · 07-28-2005, 03:44 PM

I've noticed in my 99 Discovery I SD that if I've been driving for more than 30 minutes with the A/C on the temp gauge jumps from about 1/4 to 3/4, and I've also noticed a slight burning odor coming from under the hood. I'm just trying to figure out what that could mean, and how to fix it. I'm not very mechanical when it comes to cars, so any advice would be greatly appreciated. Thanks

Black Magic · 07-28-2005, 04:51 PM

In my case it seems to be a viscous fan coupling/fan clutch that is worn out.

Two choices on that

- replace the coupling/clutch (US$200 part)

- change over to electric fans (US$250 - $350

AndrewBone · 07-28-2005, 08:17 PM

Thanks a lot for replying. I'll check out those options.

Stephen99D1 · 07-28-2005, 08:57 PM

Andrew,
Does this only occur with the AC on or all the time?
Could it also be the thermostat that's failed? Though seems to me that if it was, you'd heat up faster than 30 min... just throwing some other ideas out there...

AndrewBone · 07-30-2005, 01:04 AM

This only happens when the A/C is on. Also, I've noticed there is a substantial jolt when shifting gears...P to R, R to D, D to R, D to P. Is this something that I need to get checked out, or is it okay? I've been driving manual transmission for so long that this is completely beyond me. Most of this is beyond me anyways...I'm not very good with the mechanics of cars. I've also read that minor oil leaks are common on these cars, but can they be fixed easily? I want my parents to let me park in the driveway before it starts raining!! Thanks a lot

aussie disco97 · 07-30-2005, 05:39 AM

Hi Andrew,
The Discovery has a very good cooling system so there is obviously something wrong. My guess is that the radiator is blocked and needs cleaning out,if it was the thermostat it would happen when your air con was off. The car is comming on 6 years old and if the previous owner didn't use corrosion inhibitor in the coolant the problems of a blocked radiator would be starting to happen. Cleaning the radiator out is not a huge job ,take it to a reputable radiator repair shop and get them to take off the top tank and rod out each of the cores(cost about$40US in Australia) then re-solder the top tank back on. Then get them to reverse flush the motor cooling sytem make sure you you a good coolant/inhibitor when you refill the system.

AndrewBone · 07-30-2005, 12:25 PM

Thanks so much for that info. I'll do it first thing Monday morning. Any advice for the other problems? The jolt when shifting gears...the oil leak...anything will help at this point...Thanks again

07-28-2005, 03:44 PM	#1 (permalink)
AndrewBone Member Join Date: Jul 2005 Location: Yuba City, CA Posts: 15 Gallery: 0	Temp Gauge question I've noticed in my 99 Discovery I SD that if I've been driving for more than 30 minutes with the A/C on the temp gauge jumps from about 1/4 to 3/4, and I've also noticed a slight burning odor coming from under the hood. I'm just trying to figure out what that could mean, and how to fix it. I'm not very mechanical when it comes to cars, so any advice would be greatly appreciated. Thanks

07-28-2005, 04:51 PM	#2 (permalink)
Black Magic Member Join Date: May 2005 Location: Dayton, OH Posts: 63 Gallery: 0	In my case it seems to be a viscous fan coupling/fan clutch that is worn out. Two choices on that - replace the coupling/clutch (US$200 part) - change over to electric fans (US$250 - $350 __________________ Black '02 Discover SII, Auto. Black '87 Suzuki Samurai, rock crawler : Black '94 Discovery SI V8i, 5 spd (Currently DOA) --## If you have enough time to do something over again, you had enough time to do it right the first time. ##--

07-28-2005, 08:57 PM	#4 (permalink)
Stephen99D1 Member Join Date: Jan 2005 Location: North Carolina, USA Posts: 37 Gallery: 0	Andrew, Does this only occur with the AC on or all the time? Could it also be the thermostat that's failed? Though seems to me that if it was, you'd heat up faster than 30 min... just throwing some other ideas out there... __________________ '99 Disco I '04 Disco II

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07-28-2005, 08:17 PM	#3 (permalink)
AndrewBone Member Join Date: Jul 2005 Location: Yuba City, CA Posts: 15 Gallery: 0	Thanks a lot for replying. I'll check out those options.

07-30-2005, 01:04 AM	#5 (permalink)
AndrewBone Member Join Date: Jul 2005 Location: Yuba City, CA Posts: 15 Gallery: 0	This only happens when the A/C is on. Also, I've noticed there is a substantial jolt when shifting gears...P to R, R to D, D to R, D to P. Is this something that I need to get checked out, or is it okay? I've been driving manual transmission for so long that this is completely beyond me. Most of this is beyond me anyways...I'm not very good with the mechanics of cars. I've also read that minor oil leaks are common on these cars, but can they be fixed easily? I want my parents to let me park in the driveway before it starts raining!! Thanks a lot

07-30-2005, 05:39 AM	#6 (permalink)
aussie disco97 Member Join Date: Feb 2005 Location: Perth, Western Australia Posts: 72 Gallery: 0	Hi Andrew, The Discovery has a very good cooling system so there is obviously something wrong. My guess is that the radiator is blocked and needs cleaning out,if it was the thermostat it would happen when your air con was off. The car is comming on 6 years old and if the previous owner didn't use corrosion inhibitor in the coolant the problems of a blocked radiator would be starting to happen. Cleaning the radiator out is not a huge job ,take it to a reputable radiator repair shop and get them to take off the top tank and rod out each of the cores(cost about$40US in Australia) then re-solder the top tank back on. Then get them to reverse flush the motor cooling sytem make sure you you a good coolant/inhibitor when you refill the system.

07-30-2005, 12:25 PM	#7 (permalink)
AndrewBone Member Join Date: Jul 2005 Location: Yuba City, CA Posts: 15 Gallery: 0	Thanks so much for that info. I'll do it first thing Monday morning. Any advice for the other problems? The jolt when shifting gears...the oil leak...anything will help at this point...Thanks again

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