#1: Coolant temperature problem Author: doggydoctor, Location: WrexhamPosted: Wed Jan 19, 2011 5:13 am ---- Hi, does anyone have an idea what could be wrong with my 2002 1.1 206.
The temperature gauge will stay at 70 or lower for a long time and then suddenly go into the red and the stop sign will come on. It has happened a month ago, took it to the dealer, they changed the coolant temp sensor as that's what the computer said was broken.
Took it out for a longer drive again this weekend and the problem is still there. Only this time it would suddenly go up, but before I could find a safe place to stop, it came down again and the stop light stopped. On the way back home, same thing happened again, but the light stayed on and temp stayed in the red again.
Could it be a loose contact in the wire, bad earth connection?
The dealer also changed the battery in December.
#2: Re: Coolant temperature problem Author: Danny., Location: PeterboroughPosted: Wed Jan 19, 2011 5:50 am ---- I would say your thermostat is broken.
Cost about £10 from eurocar parts.
So worth replacing.
The pipe on thr top of the rad goes to thr engine and has a clip on it. The thermostat is that you can unbolt it with 10mm spanner then release the clip to pull it off.
#3: Re: Coolant temperature problem Author: rob_1990, Location: Cambridge UKPosted: Wed Jan 19, 2011 6:20 am ---- I have the same problem as this.
#4: Re: Coolant temperature problem Author: elcamino, Location: home!Posted: Wed Jan 19, 2011 6:38 am ---- I think its a false indication and your coolant temp. is normal .did they replace the coolant temperature gauge Sensor with a blue connector?if so check wiring from its plug for some loose connections.
#5: Re: Coolant temperature problem Author: doggydoctor, Location: WrexhamPosted: Wed Jan 19, 2011 7:23 am ---- I agree that it is a false reading. It has been replaced with a sensor with blue or green connector. Can't remember. Will have a look tonight. I find the temp indication at 70 or below a bit low as well. Don't know if that has anything to do with it.
I will have a look at the connector tonight.
Thanks
#6: Re: Coolant temperature problem Author: doggydoctor, Location: WrexhamPosted: Wed Jan 19, 2011 7:27 am ----
Danny224 wrote:
I would say your thermostat is broken.
Cost about £10 from eurocar parts.
So worth replacing.
The pipe on thr top of the rad goes to thr engine and has a clip on it. The thermostat is that you can unbolt it with 10mm spanner then release the clip to pull it off.
Would that be an easy job? I am in no way a mechanic. I did manage to replace the com unit on my car myself. Would it be similar in difficulty? I'll have a look in the haynes manual to see if it mentioned in there. Would love to sort it as then I can sell it.
#7: Re: Coolant temperature problem Author: Danny., Location: PeterboroughPosted: Wed Jan 19, 2011 10:44 am ---- Its a 10 min job max really really easy.. And since its a cheap part its allways worth it anyway.
#8: Re: Coolant temperature problem Author: elcamino, Location: home!Posted: Wed Jan 19, 2011 2:10 pm ---- If fan kicks in as usual i think thermostat is ok.
#9: Re: Coolant temperature problem Author: Steve206, Location: UKPosted: Wed Jan 19, 2011 2:25 pm ----
elcamino wrote:
If fan kicks in as usual i think thermostat is ok.
If fan kicks in, the temp sensor is ok, the thermostat can only be checked by looking at it. Dont know why the thermostat would cause the temp to shoot up and down though. Does the temp come down when driving? Does it climb up when stationary? Does the fan kick in?
#10: Re: Coolant temperature problem Author: Danny., Location: PeterboroughPosted: Wed Jan 19, 2011 2:27 pm ---- Well the thermostat lets wather through so if teh valve is didgy it may not open at teh right temp ets so shoots up then shoots down when it opens..
#11: Re: Coolant temperature problem Author: 00budham00, Location: IpsPosted: Wed Jan 19, 2011 2:39 pm ---- me too doing mine tomoz i thought engine was going to bake at traffic lights ...90c then shot to red,, fan didnt kick in till got home !!! weird but i think it needs some wd40 on to help it move feels stiff
#12: Re: Coolant temperature problem Author: 00budham00, Location: IpsPosted: Wed Jan 19, 2011 2:42 pm ----
Steve206 wrote:
elcamino wrote:
If fan kicks in as usual i think thermostat is ok.
Does the temp come down when driving?YES Does it climb up when stationary?YES Does the fan kick in?UM ONLY NOTICED IT ON WHEN GOT HOME/dont think it works all the time
whats up with it doc?
#13: Re: Coolant temperature problem Author: elcamino, Location: home!Posted: Wed Jan 19, 2011 2:46 pm ----
Steve206 wrote:
elcamino wrote:
If fan kicks in as usual i think thermostat is ok.
If fan kicks in, the temp sensor is ok, the thermostat can only be checked by looking at it. Dont know why the thermostat would cause the temp to shoot up and down though. Does the temp come down when driving? Does it climb up when stationary? Does the fan kick in?
There are two temp. sensors one tells (the ecu)the fan to operate(usually at 90) other one moves the pointer.
#14: Re: Coolant temperature problem Author: dturbopeck, Location: newcastle upon tynePosted: Wed Jan 19, 2011 3:12 pm ---- Might even be a water pump fault, is your top and bottom radiator hoses hot?
#15: Re: Coolant temperature problem Author: stevedude, Location: aldershotPosted: Wed Jan 19, 2011 4:18 pm ---- does your heater still work well, or has it gone s**t since temp probably. if so its the thermostat not opening properly,
well thats what happened to my 306 im guessing its all same principle
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