temperature rising...
Discussion
Cerbera 2003
My water temp is rising,
Both fans come on at 92,98deg,
The temp creeps up above 100deg,
If I rev the car above 2000rpm the temp settles back down again to 90deg (stationery)
I just changed the thermostat and the Blue expansion cap but it's still doing it^^.
I have bled the radiator to death, I don't think it's air in the system.
Up until recently both fans kicked in and reduced the temp, It never got near 100deg or above.
Any ideas???
My water temp is rising,
Both fans come on at 92,98deg,
The temp creeps up above 100deg,
If I rev the car above 2000rpm the temp settles back down again to 90deg (stationery)
I just changed the thermostat and the Blue expansion cap but it's still doing it^^.
I have bled the radiator to death, I don't think it's air in the system.
Up until recently both fans kicked in and reduced the temp, It never got near 100deg or above.
Any ideas???
Thanks for the replies,
I fitted a proper high flow 82deg thermostat from a TVR parts supplier, so that should be ok
I checked the water temperature on the lap top and it was accurate it wasn't exagerating the temp at all.
The water pump breaking down, well when I rev the engine the temp decreases so is it the water pump pushing water around the engine that reduces the temp which means it's OK, doesn't it? or is it an air lock being pushed around.
It's got me stummped!
I fitted a proper high flow 82deg thermostat from a TVR parts supplier, so that should be ok
I checked the water temperature on the lap top and it was accurate it wasn't exagerating the temp at all.
The water pump breaking down, well when I rev the engine the temp decreases so is it the water pump pushing water around the engine that reduces the temp which means it's OK, doesn't it? or is it an air lock being pushed around.
It's got me stummped!
Peter, thanks for your reply.
I am a mechanical numptie so I appreciate your help.
Your right it cools down when I rev up the engine on idol when it reaches 100deg. At normal driving speeds it's fine.
I have bled the radiator that much that the screw on the radiator (metal)is not tightning now against the plastic side panels on the rediator, although there is no water leeking from it. Do you think this would have an effect in that it might not be holding enough pressure in the system?.
I am worried that it might be the water pump but I'm hoping it's something else less expensive
I am a mechanical numptie so I appreciate your help.
Your right it cools down when I rev up the engine on idol when it reaches 100deg. At normal driving speeds it's fine.
I have bled the radiator that much that the screw on the radiator (metal)is not tightning now against the plastic side panels on the rediator, although there is no water leeking from it. Do you think this would have an effect in that it might not be holding enough pressure in the system?.
I am worried that it might be the water pump but I'm hoping it's something else less expensive
Laser Sag said:
Are you sure both fans are actually coming on, the connectors close to the fans can fail so that one of the fans won't work.
Also worth checking the blue cap is sealing correctly, a friend with a Griff recently spent a lot of time and money on the same problem before finding that the cooling system wasn't maintains pressure.
Hope it is something as simple as one of the above.
Thanks for the reply,Also worth checking the blue cap is sealing correctly, a friend with a Griff recently spent a lot of time and money on the same problem before finding that the cooling system wasn't maintains pressure.
Hope it is something as simple as one of the above.
Both fans are definatley coming on at the correct temp and staying on until I rev the car then it temp drops below 90deg and they both turn off.
I just bought a new blue cap and Im confidentthat it is on tight enough.
The radiator screw is not tighting up anymore but there is no water leaking from it when up at 90/95/100deg, could this be the issue?. It might mean a new radiator as the screw threads into a plastic side panel on the radiator.
George
Still no luck,
I have just taken the car out for a short run after having it of the road for a few months and it spewed it's coolant out the expansion cap. I had to wait until it cooled down, release the expansion cap and it made a gargling sound then I topped it up and drove home just as it started to spew the coolent out again.
I went to the local shop bought a few cans of beer and am now concidering my position....!!!
Does anyone have have a simple step by step guide to filling a Cerbera speed six up with coolant?
I must still have an air lock in it or is the system not holding pressure or am I over filling it?
I have replaced the radiator the expansion cap and the thermostat so far.
I have just taken the car out for a short run after having it of the road for a few months and it spewed it's coolant out the expansion cap. I had to wait until it cooled down, release the expansion cap and it made a gargling sound then I topped it up and drove home just as it started to spew the coolent out again.
I went to the local shop bought a few cans of beer and am now concidering my position....!!!
Does anyone have have a simple step by step guide to filling a Cerbera speed six up with coolant?
I must still have an air lock in it or is the system not holding pressure or am I over filling it?
I have replaced the radiator the expansion cap and the thermostat so far.
I have just spent an hour running the car on the drive bleeding the rad and filling the expansion tank.
The fans turn on at around 92 /97 but the temp rises to about 105 and then sits there, I have to blip the throttle a few times to get it to settle back down below 90.
I honestly do not think there is any more air in the system, when I bleed the rad when the fans come on (92/97) water sprays out the bleed screw so I guess that means the air is out, I have done this 4/5 times.
The system seems to hold pressure, the water hoses are nice and solid, the top hoses are hot,the bottom hoses warm.
I will let the car cool down and try again in a few hours.
How long after your SP6 fans kick in does the temp drop and to what temp does it drop to, SO I know what to aim for.
The fans turn on at around 92 /97 but the temp rises to about 105 and then sits there, I have to blip the throttle a few times to get it to settle back down below 90.
I honestly do not think there is any more air in the system, when I bleed the rad when the fans come on (92/97) water sprays out the bleed screw so I guess that means the air is out, I have done this 4/5 times.
The system seems to hold pressure, the water hoses are nice and solid, the top hoses are hot,the bottom hoses warm.
I will let the car cool down and try again in a few hours.
How long after your SP6 fans kick in does the temp drop and to what temp does it drop to, SO I know what to aim for.
It was only through the expansion cap. After reading reports on here of that being done successfully.
Does the temp go back up immediately as the revs go down? No not immediatley gradually over a period of time, If I blip the throttle a few times when the temp is at 100 the temp drops back down to 70/80 fairly quickly
Maybe give Power a call since they did your rebuild. They would have checked the condition of the water pump at the time, so I doubt its that. How many miles since? 6,000 but I don't think it is the water pump
I know from past experience that TrackVRoad are happy to help out complete strangers over the phone.
Maybe give the bleed screw a rest and try the burp method. Maybe that unstucks air from certain areas better, is my theory.
thanks guys I will give it a go in the morning, I have been bleeding it from both the rad and the Expansion tank I take it the expansion tank and swirl pot are the same thing?Does the temp go back up immediately as the revs go down? No not immediatley gradually over a period of time, If I blip the throttle a few times when the temp is at 100 the temp drops back down to 70/80 fairly quickly
Maybe give Power a call since they did your rebuild. They would have checked the condition of the water pump at the time, so I doubt its that. How many miles since? 6,000 but I don't think it is the water pump
I know from past experience that TrackVRoad are happy to help out complete strangers over the phone.
natben said:
I honestly do not think there is any more air in the system, when I bleed the rad when the fans come on (92/97) water sprays out the bleed screw so I guess that means the air is out, I have done this 4/5 times.
Only 4 or 5 times? Bah! Maybe give the bleed screw a rest and try the burp method. Maybe that unstucks air from certain areas better, is my theory.
I have poured litres of coolent through the car today and it has made no difference so it's time for a change of plan. Here's hoping the above method works.
Hi Goaty, again thanks for your help and advice.
The photo you posted is from a T350 or Sagaris.
I have gave it a go and at about 90deg bubles start coming out the expansion cap/ home made addaptor(picture) right through to 99 deg then I rev the engine and it drops back down to 85ish no bubbles, I have ran this cycle 5 times and I am now letting the car cool down before trying again as so far it has made no difference but as SercSG has said I need to do it maybe 8+times.
If this does not work then It will have to get transported to a garage as I have taken it as far as I can.
Again thanks for your help.
The photo you posted is from a T350 or Sagaris.
I have gave it a go and at about 90deg bubles start coming out the expansion cap/ home made addaptor(picture) right through to 99 deg then I rev the engine and it drops back down to 85ish no bubbles, I have ran this cycle 5 times and I am now letting the car cool down before trying again as so far it has made no difference but as SercSG has said I need to do it maybe 8+times.
If this does not work then It will have to get transported to a garage as I have taken it as far as I can.
Again thanks for your help.
Well So far,
I have ran the car up to Temperature
Up to 99deg with both fans coming on,
Bubbles do appear inside the expansion tank home made contraption,
But the temperature hasn't shifted,it remains at 99/100 and would keep rising slowly if I let it.
I'm thinking the bubbles are because the water is boiling and nothing to do with an air lock!!.
I have ran it through this process 10 times with absolutley no difference.
I have given up and am now taken the dog for a long walk,
God help anyone who looks at me the wrong way.
I have ran the car up to Temperature
Up to 99deg with both fans coming on,
Bubbles do appear inside the expansion tank home made contraption,
But the temperature hasn't shifted,it remains at 99/100 and would keep rising slowly if I let it.
I'm thinking the bubbles are because the water is boiling and nothing to do with an air lock!!.
I have ran it through this process 10 times with absolutley no difference.
I have given up and am now taken the dog for a long walk,
God help anyone who looks at me the wrong way.
No I changed the Rad during the winter, The symptons I am experiencing were there with the old rad and are continuing with the new one.
I think the Rad is ok,
I think the thermostat is OK
I think the Temp sensor is ok as the fans come on at the correct temp.
So I think I will drain it down and refill from scratch, It doesn't cost anything only my time so worth another bash.
Thanks for everyones help with this. My car never went above 95 deg before then retreated very quickly back to 70/80deg when stationery so this is what I am looking to achieve as well as the coolant staying in the sytem and not spewing out.
I think the Rad is ok,
I think the thermostat is OK
I think the Temp sensor is ok as the fans come on at the correct temp.
So I think I will drain it down and refill from scratch, It doesn't cost anything only my time so worth another bash.
Thanks for everyones help with this. My car never went above 95 deg before then retreated very quickly back to 70/80deg when stationery so this is what I am looking to achieve as well as the coolant staying in the sytem and not spewing out.
Edited by natben on Tuesday 8th April 22:33
Hi Scotty, where about is the heater matrix on the Cerb.
I drained down the coolant and re-filled it and bled it a few times, on the drive way it reached low 90deg, both fans kicked in and it returned down to 70 quiet quickly.
I let it cool down then tried again and the same thing happenen reached mid 90s then cooled back down to 70 quiet quickly.
So I went for a 30min run and it was fine 70 deg on the motorway 80-90 in traffic returned home and sat in it on the driveway it reached 100 spewed the coolant out the expansion cap and I'm back to square one again.
I drained down the coolant and re-filled it and bled it a few times, on the drive way it reached low 90deg, both fans kicked in and it returned down to 70 quiet quickly.
I let it cool down then tried again and the same thing happenen reached mid 90s then cooled back down to 70 quiet quickly.
So I went for a 30min run and it was fine 70 deg on the motorway 80-90 in traffic returned home and sat in it on the driveway it reached 100 spewed the coolant out the expansion cap and I'm back to square one again.
m4tti, sounds like a good idea I will make some enquiries at a few local garages and see what the score is.
Scotty I think I will leave it alone the last thing I need is something else to take apart and struggle with.
The Cerbera is really trying my patience and at the moment I am thinking that I need to get this sorted and then It may be heading on to the classifieds!!.
Scotty I think I will leave it alone the last thing I need is something else to take apart and struggle with.
The Cerbera is really trying my patience and at the moment I am thinking that I need to get this sorted and then It may be heading on to the classifieds!!.
No Scotty,I have an mot due shortly and I have made enquiries about getting the car transported back to TVR Power.
I am going to drain the coolant down, remove the radiator and check I didn't damage it when I fitted it put it all back together and have one last try.
I have followed all the advice I have been given about bleeding the air out as well as having a chat with Dom as to how to do it but nothing has worked.
Maybe I am an idiot and should stick to cutting the grass as filling a Cerbera up with coolant seems to be beyond me.
I am going to drain the coolant down, remove the radiator and check I didn't damage it when I fitted it put it all back together and have one last try.
I have followed all the advice I have been given about bleeding the air out as well as having a chat with Dom as to how to do it but nothing has worked.
Maybe I am an idiot and should stick to cutting the grass as filling a Cerbera up with coolant seems to be beyond me.
It is with Dom at Power at the moment, It looks like the water pump is the culprit, but Dom is having a good look at it and will let me know shortly.
It is posible that the spindal that drives the water pump is slipping and not driving the blades around and so not forcing water through/around the engine as all other symptoms have been checked and are OK.
But water pump failure is very very very rare and requires the engine to be removed but knowing my luck I will have the "rare" faulty one!!!!.
This Cerbera Is really trying my patience and I am not a wealthy man and it is hurting me right now,selling it on buying my long suffering wife a new kitchen looks like a better option right now, but, I can't really go to all this pain and hassle to sell it on to someone else to enjoy!.
I don't think there is anything left mechanically on the car which has not been replaced in the last few years so it has to start rewarding me soon,I can't bear to add up how much I have spent on it. Most of the miles I have done in it have been returning back to Scotland from Power in Coventry and BHP performance in Blackpool!!! thats when I have been able to drive it,I have been keeping the local car transporters busy the last few years transporting it from Scotland down to England and let me tell you that aint cheap either. Then add on train tickets to England and Hotel costs and honestly I wonder why the hell I am so attached to the Dam thing. If it was a super model who was stinking rich and a nympho I would have dumpped her long ago for the pain and hassle she has cost me.
But I will hang on in there but It would be good to get some miles on it this summer. But of course I will get a working Cerbera and the summer will be one of the wettest on record .......wait and see!!.
It is posible that the spindal that drives the water pump is slipping and not driving the blades around and so not forcing water through/around the engine as all other symptoms have been checked and are OK.
But water pump failure is very very very rare and requires the engine to be removed but knowing my luck I will have the "rare" faulty one!!!!.
This Cerbera Is really trying my patience and I am not a wealthy man and it is hurting me right now,selling it on buying my long suffering wife a new kitchen looks like a better option right now, but, I can't really go to all this pain and hassle to sell it on to someone else to enjoy!.
I don't think there is anything left mechanically on the car which has not been replaced in the last few years so it has to start rewarding me soon,I can't bear to add up how much I have spent on it. Most of the miles I have done in it have been returning back to Scotland from Power in Coventry and BHP performance in Blackpool!!! thats when I have been able to drive it,I have been keeping the local car transporters busy the last few years transporting it from Scotland down to England and let me tell you that aint cheap either. Then add on train tickets to England and Hotel costs and honestly I wonder why the hell I am so attached to the Dam thing. If it was a super model who was stinking rich and a nympho I would have dumpped her long ago for the pain and hassle she has cost me.
But I will hang on in there but It would be good to get some miles on it this summer. But of course I will get a working Cerbera and the summer will be one of the wettest on record .......wait and see!!.
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