MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Dan1290 on May 30, 2017, 09:13:01 pm
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Good evening folks recently changed my thermostat for a genuine one as I wasn't hitting 90 on dash.. Now I'm rock solid 90 but when I switch car off and remove key the fans come on flat out for 50 seconds.. Torque app says coolant is at 103 everywhere I go now aswell is this normal?
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Did you definetly plug in the wee temp sensor on the stat? you may have an air lock if the system hasn't bled properly.
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Did you definetly plug in the wee temp sensor on the stat? you may have an air lock if the system hasn't bled properly.
There wasn't a sensor on the stat? I did remove the intake to fit, which sensor could cause this high reading? Also how do you bleed the system?
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U sure it's not the ac fan, mine carries on running for a few seconds after turning the engine off when I'm using the ac
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U sure it's not the ac fan, mine carries on running for a few seconds after turning the engine off when I'm using the ac
Yes ac is off and it is still comes on once switched off
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The systems should be self bleeding, when it's up to temp feel both radiator pipes see it there both hot if so must be a sensor problem. This on a mk5 gti?
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The systems should be self bleeding, when it's up to temp feel both radiator pipes see it there both hot if so must be a sensor problem. This on a mk5 gti?
Yes mk 5 gti bwa engine.. Thanks for for your input mate.. Dying to get to the bottom of the it.. Do you know what where all of the sensors are?
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Not too sure to be honest mate. I remember when I did my main thermostat there was a sensor on that and I think there's one on the right hand side of the engine (if you were stood facing the engine)
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Not too sure to be honest mate. I remember when I did my main thermostat there was a sensor on that and I think there's one on the right hand side of the engine (if you were stood facing the engine)
Ok cheers mate in the so some research online
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The coolant is self bleeding to a point but you need to put the heater on full heat and hold the revs at 2500rpm until the fan kicks in (above 90c) with the cap off. Keep checking the coolant level and keep it topped up.
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Good practice to renew Your temperature sensor located on the side of the block underneath the intake pipe and your small fan might of had it mine did and it sounded like a jumbo jet taking off after shutting down the engine
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Good practice to renew Your temperature sensor located on the side of the block underneath the intake pipe and your small fan might of had it mine did and it sounded like a jumbo jet taking off after shutting down the engine
Thanks mate which is the main temp sensor? The one on the end of the engine above gearbox or below thermostat housing?
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My 07 Mk5 GTI had the exact same problem after a main thermostat change.
was changed because of the temp stat not being at a standard 90.
after the change, the big fan used to run at turn off for ages. Really annoying.
Never solved TBH
(This post really doesn't help the OP)
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@Dan1290 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=17926) have a look through this http://www.pelicanparts.com/techarticles/Volkswagen_Golf_GTI_Mk_V/19-WATER-Coolant_Temperature_Sensors_Replacement/19-WATER-Coolant_Temperature_Sensors_Replacement.htm
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My 07 Mk5 GTI had the exact same problem after a main thermostat change.
was changed because of the temp stat not being at a standard 90.
after the change, the big fan used to run at turn off for ages. Really annoying.
Never solved TBH
(This post really doesn't help the OP)
Mate trying hard to solve this have you replaced your temp senders?
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When I said about the sensor on the stat I meant the one in the coolant hose, for some reason I remembered it as being in the stat.
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When I said about the sensor on the stat I meant the one in the coolant hose, for some reason I remembered it as being in the stat.
There are 2 one is below the stat and the other is on the right hand side of the engine coolant outlet.. In going to changes coolant outlets first and see if the fans stop blazing everytime I pull up
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When I said about the sensor on the stat I meant the one in the coolant hose, for some reason I remembered it as being in the stat.
There are 2 one is below the stat and the other is on the right hand side of the engine coolant outlet.. In going to changes coolant outlets first and see if the fans stop blazing everytime I pull up
Yeah I've got the one at the right hand side to change as my fan runs all the time, might do it this weekend. Don't fancy having to change the other one.
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Good practice to renew Your temperature sensor located on the side of the block underneath the intake pipe and your small fan might of had it mine did and it sounded like a jumbo jet taking off after shutting down the engine
Indeed. That sensor is notorious and has been revised numerous times since it was first introduced in the 1.8T/R32. I did mine alongside a new stat, both parts from VW. The sensor isn't cheap, mind. £45 I think I paid for it.
Had zero issues with the fans afterwards, so this is a curious problem!
I've heard if the fuse for the smaller fan blows, the second one takes over, so you could be onto something there.
As the fan controller is built into the fans, troubleshooting them isn't easy, but it's all tied into the after-run circuit that also runs the electric water pump for 5 mins after shut down. Dan, did you disturb the electric pump connection?
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So... I replaced the temperature sensor over the gearbox and nothing has changed still running around @100° Any ideas I'm thinking dodgy thermostat :thinking:
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There must be something going on here\something that we are all missing??
Because I have had exactly the same problem after replacing my main thermostat!!
I changed the two in-line stats also and that didn't help...
I'm going to try what Richie VRS said (thanks very much for the tip Richie) and bleed the system a bit more carefully with the heat on and the cap open etc..
Will keep you all posted :happy2:
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There must be something going on here\something that we are all missing??
Because I have had exactly the same problem after replacing my main thermostat!!
I changed the two in-line stats also and that didn't help...
I'm going to try what Richie VRS said (thanks very much for the tip Richie) and bleed the system a bit more carefully with the heat on and the cap open etc..
Will keep you all posted :happy2:
@ducman77 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7463) are you having the same issues then running hot? Its doing my head in.. IV tried the cap off / heaters job still no joy mate.. Keep me posted
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I'm not sure about the running hot buddy? My temperature gauge is sitting exactly at 90?
I will have to connect it to the VCDS and see what actual degrees it's reading.
The Problem that I have is whenever I stop at the lights or come home and park the fans are running like mad and the rpms are 1,000+ The whole thing is just really unsatisfying!!
I tried recharging my battery ironically and that seemed to help for awhile??
I will persevere in trying to sort it out and I will definitely keep you posted!
Cheers,
Dave
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hi im new to this page i have a vw golf 2.0 tdi mrk5 56 plate iv replaced the clucth all went back nice started driveing for around 20 mins then a ticking noise cum when u pressed clucth down lift the clucth bk stops then the hoter the car gets it gets bad eny help plzzz