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Engine doesn't like starting when cold
Posted: Tue Jan 22, 2008 12:07 pm
by NickP
Hi all, just wondering if anyone can help me with a problem I've been having, I've seen it posted on here a while ago but not sure how to fix it. Basically when starting the engine cold the auto-choke doesn't kick in and I think it's something to do with the engine temperature sensor malfunctioning. Can anyone advise and tell me how to fix it or if not where to take it without getting charged a fortune. Many thanks!
Posted: Tue Jan 22, 2008 2:50 pm
by bbspolo
Yep def the engine temp sensor ! very comon on polos i must change at least 3 a week! Very easy 2 do just pull the clip off then pull the sensor out. replace and then refill the coolant!
Just make sure
1) the engine is cold when u do it or u will end up in hospital!
2) when u refill the coolant leave the lid of the expansion bottle and start the car, and leave it 2 run for a while (this gets rid of any air bubbles in your coolant system!
Re: Engine doesn't like starting when cold
Posted: Tue Jan 22, 2008 4:29 pm
by Bepe
NickP wrote:Hi all, just wondering if anyone can help me with a problem I've been having, I've seen it posted on here a while ago but not sure how to fix it. Basically when starting the engine cold the auto-choke doesn't kick in and I think it's something to do with the engine temperature sensor malfunctioning. Can anyone advise and tell me how to fix it or if not where to take it without getting charged a fortune. Many thanks!
will be your plugs mate, mine was starting really heavy, went for a service and he said was plugs, now i have another problem of starting heavy, the camshaft positioning sensor has weak signals
Posted: Tue Jan 22, 2008 7:23 pm
by NickP
Cheers guys, is it easy to do this myself. Bear in mind I'm a novice, can you anyone give me clear instructions? Where's best place to pick up a new sensor, local VW garage?
Posted: Tue Jan 22, 2008 8:03 pm
by polo_dude
Euro carparts, GSF carparts, VW dealers pretty much anywhere that sell VW parts!
Posted: Tue Jan 22, 2008 9:09 pm
by bbspolo
funny i should have posted on this 2day a friend of mine has just brought his polo round 2 me saying it wont start properly when cold 2 mins and 5052 later what pops up as a fault Temp sensor!
One way 2 check if ur not sure is 2 disconect the temp sensor (just pull the plug of ) and it should start better! not perfect but better ! thats what i have done for my mate so he can still use it till i get him a new sensor from work 2 moro !
from what i rember there about 17 quid and 5 pound for a bottle of coolant!
Should get 2 unless uve done it before and have the knack then u can get away with one bottle!
Hope this helps!
BBSPOLO
Posted: Tue Jan 22, 2008 9:11 pm
by bbspolo
O another thing wont be the plugs my man! if it were and the plugs r coked up the car would ran bad all the time maby misfiring!
If ur local ill happly do it for u i work at croydon vw!
Posted: Thu Jan 24, 2008 6:57 pm
by Tailor
My car has all of a sudden started doing the same thing, and is not starting when cold.
How would i go about changing the tempeture sensor?
Also where is it located?
Cheers
Posted: Fri Jan 25, 2008 5:51 pm
by LeMeph
should be on the bottom right of the radiator i think....
Tis on most cars!
Posted: Fri Jan 25, 2008 6:46 pm
by NickP
Is this it, if so I presume i just pull it out, replace it (sounds simple but if there's any details please let me know) Fill the radiator back up with water and antifreeze? then good to go??
Posted: Fri Jan 25, 2008 7:14 pm
by Bepe
your temp sensor is at the side of your cam it has a green casing try not to brake the retaining clip and loose the washer when you replace it
Posted: Fri Jan 25, 2008 7:18 pm
by Bepe
quick pic:
Posted: Sat Jan 26, 2008 6:13 pm
by NickP
Thanks bepe and eveyone else for you help. I've changed this now and written a DIY guide about how I did it.
http://www.tigerstyle.co.uk/poloforum/v ... 50dde60804
hope this helps any others with same problem.