The mystery of the overheating D1- SOLVED
I've read through lots of threads already here about similar issues and symptoms to what I'm experiencing, but I just haven't been able to solve mine yet and I'm about out of ideas.
Hoping someone might be able to help me out.
1998 Discovery 4.0 V8, 185k miles. New to me, unknown history.
Seems to run around town at about 200-210. I just noticed that on a long uphill drive that the temp started to climb past halfway on the gauge , my Torque app on my phone said it was hitting 230 and climbing so I pulled over and let it cool. I popped the hood and the coolant was boiling in the expansion tank and venting out the cap.
So far I have replaced a few things and there has been no change.
New, out of the box items installed this weekend-
Radiator
Water Pump
Viscous fan clutch
Thermostat, 160 degree
New serpentine belt.
So tonight I started it from cold and let it idle about 30 minutes in the driveway. Temp finally got to about 192, and I took off for a drive. On the freeway for a few minutes and the temp seemed to stabilize about 185. Then when coming off the freeway the temp got to about 206. By the time I got back to the house and let it idle again it was about 215 and climbing steadily.
I believe I have the air bled out a much a possible. No white smoke from the exhaust. The upper hose is very hot to the touch but not extremely hard with pressure. I also verified that the belt is routed properly, and my a/c fans are working fine. They even kick on without the a/c when it's too hot.
So I've ordered a block test kit to make sure there is no exhaust in my coolant. But other than the possibility of a HG problem, I'm pretty much out of ideas. I really expected my new radiator to be the silver bullet and it wasn't.
I appreciate any more ideas from the pros out there, thanks!
I've read through lots of threads already here about similar issues and symptoms to what I'm experiencing, but I just haven't been able to solve mine yet and I'm about out of ideas.
Hoping someone might be able to help me out.
1998 Discovery 4.0 V8, 185k miles. New to me, unknown history.
Seems to run around town at about 200-210. I just noticed that on a long uphill drive that the temp started to climb past halfway on the gauge , my Torque app on my phone said it was hitting 230 and climbing so I pulled over and let it cool. I popped the hood and the coolant was boiling in the expansion tank and venting out the cap.
So far I have replaced a few things and there has been no change.
New, out of the box items installed this weekend-
Radiator
Water Pump
Viscous fan clutch
Thermostat, 160 degree
New serpentine belt.
So tonight I started it from cold and let it idle about 30 minutes in the driveway. Temp finally got to about 192, and I took off for a drive. On the freeway for a few minutes and the temp seemed to stabilize about 185. Then when coming off the freeway the temp got to about 206. By the time I got back to the house and let it idle again it was about 215 and climbing steadily.
I believe I have the air bled out a much a possible. No white smoke from the exhaust. The upper hose is very hot to the touch but not extremely hard with pressure. I also verified that the belt is routed properly, and my a/c fans are working fine. They even kick on without the a/c when it's too hot.
So I've ordered a block test kit to make sure there is no exhaust in my coolant. But other than the possibility of a HG problem, I'm pretty much out of ideas. I really expected my new radiator to be the silver bullet and it wasn't.
I appreciate any more ideas from the pros out there, thanks!
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