Anyone ever used this?

[Jay-ZS+]

Originally Posted by ritchyp

possible yeah, the caps are quite bad for failing on them, know some of the guys at work replace them as part of thier yearly service, the new tanks about £10 - 15 if i remember right id be cleaning all the connectors on the temp sensors as well so what was done to it when did it start over heating, is the waterpump working right ect

All the pipes are getting hot so the pump must be pushing it around the system, The cap is about £12 the tank is £50ish!!!

Will look at temp sensor but thats down in the 'V' so bit of a pig to get too.
Doesnt over heat just get steam out the tank/cap. Other than that loving the V6 power / roar even if I was taking it easy

[Ritchy]

cap: http://cgi.ebay.co.uk/ROVER-25-45-20...item2ea5c9a06e
used bottle: http://cgi.ebay.co.uk/ROVER-400-45-Z...item5ad3c0a298

well if the temp sensors giving out the wrong resistance then the fans wont kick in at the right time, and the rest of the system will get warm as it will thermosyphone if the pump aint working though i doubt its broken but thought id add it in, youll see it flowing in at the top of the bottle anyways.

[Jay-ZS+]

Yer looked at that tank but think I will just get new then im sure theres not an issue with that. Plugged Daves scanguage in and the temp was coming back as in the 90s so the sensor is about right but would hurt to clean the connections as believe there are 2 sensors one for the ECU and one for the guage.

[Ritchy]

yeah but whats the actual temprature at? if the sensors giving an innacurate reading, i know what your saying about putting new parts on im the same but 50 is a lot as i remeber seeing one last year getting a new tank and it wasnt any more than £20 definatly not, not sure on the rates though.. if i had autodata just now id tel ya what the resistance should be, if ye give me 15 mins or so il dig out rave dvd n see if if it gives me a resistance value for one

[KevG]

05-20
COOLING SYSTEM - KV6 Engines
WARNING: Fans can start (or run on) for up to 4 minutes after the ignition is switched off.
Type Pressurised, spill return, thermostatically controlled water / anti-freeze
mixture
Cooling fans 2 x 11-blade variable speed electric cooling fans, ECM controlled
by PWM signal to electronic fan controllers
PWM duty cycle range 10 - 90%
Fans off PWM duty cycle = 10 - 49%
Cooling fans minimum speed 1300 rev/min @ 50% PWM duty cycle
Cooling fans maximum speed 3000 rev/min @ 90% PWM duty cycle
Cooling fan switching points - For A/C system:
⇒On When air conditioning is requested
⇒Fan minimum speed When A/C refrigerant pressure is less than 16000 kPa (16 bar,
232 lbf/in2)
⇒Fan maximum speed Refrigerant pressure at 27000 kPa (27 bar, 392 lbf/in2)
Cooling fan switching points (ECT sensor control) - for
engine cooling during normal running:
⇒Fan minimum speed switch on temperature 95°C
⇒Fan maximum speed temperature 114°C
⇒Fan switch off temperature 93.5°C
Cooling fan switching points - engine OFF soak Fans on for a maximum of 8 minutes
⇒On Coolant temperature exceeds 114°C
⇒Off Coolant temperature less than 112°C
Coolant pump Rotor type, mechanical, driven by camshaft timing belt
Coolant pump drive ratio 0.93:1
Coolant pump output @ 1000 rev/min. 0.5 litres / sec. (0.875 pts/sec)
Thermostat Wax element
Thermostat operating temperature:
⇒Initial opening 88°C ± 2°C
⇒Minimum opening - 9mm 96° C
Expansion tank pressure cap opens 1.4 bar

[Ritchy]

fan minimum switch on speed: 95 C
fan maximum speed temprature: 114 C
fan switch off temprature: 93.5 C
thermostat initial opening: 88 C
minimum openening 9mm at 96 C

i cant find the resistance values in rave anywhere, il see if autodata has them tomorrow i dont have autodata on my new laptop, are you sure theres no air in the system still?

[Ritchy]

well kev has all the info there that i was looking at on that page, was looking through the bulletins as well n couldnt find anything

[Jay-ZS+]

Cheers guys will double check the fans and temp sensors are all good. Will also bleed the system as with all this refilling would be worth double checking

[talkingcars]

Going back to your first post - I wouldn't bother, the K and KV6 warm up really quickly, like in 4 or 5 minutes of normal driving.

Having watched the ZS180 temp gauge against the scan gauge I notice that the neddle doesn't really start moving until the coolant reaches about 65'.

[Supercharged_Z]

sounds tricky.

you say its not overheating, but it is, its getting way above normal temps.

only twice have a seen a 180 get hot, that was supercharged and was on a track day, it merley went over the half mark, water wetter sorted the problem, but the problem was one that was expected.

have you changed your rad? could it be blocked? is the thermostat the correct one?

your car is obviously getting to hot, its nearest vent point is the highest and probably weakest the cap..

good luck finding it, sounds very strange