Discussion
Even in the icy temperatures at the moment, in traffic my Griff works its way up to just over an indicated 90 degrees before the fans kick in. I'm wondering if that's normal in winter and, if it is, what should I expect in summer?
Also, my heater seems to have only one temperature at the moment - volcanic! Great for winter (especially with the roof down) but it's going to be pretty sweaty in there come summer. I've heard that this is a common "feature", but does anyone know if it can be fixed?
Also, my heater seems to have only one temperature at the moment - volcanic! Great for winter (especially with the roof down) but it's going to be pretty sweaty in there come summer. I've heard that this is a common "feature", but does anyone know if it can be fixed?
Mine seems to hover around 50-65 when on the move when it's chilly out, but will also get up to 90ish when standing still in traffic, even in icy temperatures.
And the heat problem sounds like it could be the heater control valve... in the chimeara it's cable activated and can be found under the passenger side of the dash with a couple of big pipes going into it and a swing arm part that moves through 90 or so degrees. I assume (ha!) that the Griff is similar enough. I've had a couple of duff ones and believe me, it *is* hellish in summer time!
Had it fixed, by the stealer under warranty, and what a difference. The part is about 40 quid as I recall (didn't pay for it tho, so memory is hazy) and the labour *ought* to be pretty negligible.
Edited by Marshy on Sunday 23 December 02:07
And the heat problem sounds like it could be the heater control valve... in the chimeara it's cable activated and can be found under the passenger side of the dash with a couple of big pipes going into it and a swing arm part that moves through 90 or so degrees. I assume (ha!) that the Griff is similar enough. I've had a couple of duff ones and believe me, it *is* hellish in summer time!
Had it fixed, by the stealer under warranty, and what a difference. The part is about 40 quid as I recall (didn't pay for it tho, so memory is hazy) and the labour *ought* to be pretty negligible.
Edited by Marshy on Sunday 23 December 02:07
I have been on this subject before and what you are seeing is tvr. That is not a knock. My 500 had the water stat opening at 82, showing 65 on the guage. The fans kick in at 96. showing 93 ish on the guage.In between is down to air temp and forward movement to cool the rad.If it were possible to have the original range rover,big boy thermo coupled fan fitted, then the temp guage would not move.I have a rangie as well.
The heater control valve is a bit of a hit and mis affair, it is elctronically controlled. When working as intended is in fact fine. It has a variable resistor the tell the controller where it is, ie in the cold position or the hot and in between. Mis-alligned then you adjusting would not be true. My variable res went open circuit, so all day long the valve was opening, closing.
My last griff had the valve not closing properly, so even when aligned correcly, would not stop the flow of hot water to the heater matrix, not nice in the summer.
Pop your head under the glove box and look for water pipes, follow along to a black valve looking device. Move your heater control and see if the valve moves. On mine there is a white marker to show when it is in the cold position. Check that your knob is in the cold position when aligned. If out, you might have to have your knob at say the half way position to achieve the cold air.
David
The heater control valve is a bit of a hit and mis affair, it is elctronically controlled. When working as intended is in fact fine. It has a variable resistor the tell the controller where it is, ie in the cold position or the hot and in between. Mis-alligned then you adjusting would not be true. My variable res went open circuit, so all day long the valve was opening, closing.
My last griff had the valve not closing properly, so even when aligned correcly, would not stop the flow of hot water to the heater matrix, not nice in the summer.
Pop your head under the glove box and look for water pipes, follow along to a black valve looking device. Move your heater control and see if the valve moves. On mine there is a white marker to show when it is in the cold position. Check that your knob is in the cold position when aligned. If out, you might have to have your knob at say the half way position to achieve the cold air.
David
The volcanic heat seting could be caused by the motor whcih switches betweeen hot and cold (warmish actually 
) failing. I have gone through 4 on my 500. The dash switches are crap and can become lose, this sends constant signals to the motor, which it is not designed for so it burns out. Took 4 motors to get to that answer though.
Indicated pressure problems sound like sensors, My griff has been running at 30psi on start, down to 5 at idle in traffic and back to 30 on the motorway, but presssure is fine on a mechanical tester, just reads funny on the dash.
Good luck
) failing. I have gone through 4 on my 500. The dash switches are crap and can become lose, this sends constant signals to the motor, which it is not designed for so it burns out. Took 4 motors to get to that answer though. Indicated pressure problems sound like sensors, My griff has been running at 30psi on start, down to 5 at idle in traffic and back to 30 on the motorway, but presssure is fine on a mechanical tester, just reads funny on the dash.
Good luck
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