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Forums › The Car › 206 Problems › Coolant Temp Sens |
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 Posted: Mon Nov 12, 2012 7:19 am |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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Hiya guys, just a quick question...
Ive got a 2001 Y reg 206 GTI. I bought a new sensor as stated in topic, but it was all green, the one I took out the side of the engine is all green except a yellow band. Does this matter?
When I plugged in the new sensor the car wouldnt tick over correctly, like going from 300 revs to 800 then 300 then 800, about 2 times a second. Was like this for 3mins then I gave up and replaced the old sensor.
With the old sensor in the engine, it does the same thing when cold, but after 1min (warm up time) the engine idles smooth as silk.
Can anyone send me a pic of their coolant temp sensor and if it has any yellow band around it close to the thread on the green plastic, furthest away form the connection plug wire.
And would a dead/dying coolant temp sensor cause my problem?
Many thanks.
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Posted: Mon Nov 12, 2012 9:16 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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They are normally just green. Yellow is a seal of some sort is it?
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Mon Nov 12, 2012 7:10 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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sorry for late reply, been slaving in a facotry  hehe.
erm, no idea, when i plugged in the new sensor, it didnt work at all, engine was spluttering like crazy. putting old sensor back in and all was fine. and the shop i use had 3 on its computer system for the GTI alone, but none had a yellow band around them. all 3 had same connections, just different colours.
Its not a seal, no. Its just a yellow band around the green plastic, ill try and get a pic tomorrow.
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Posted: Mon Nov 12, 2012 7:16 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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Posted: Fri May 03, 2013 11:41 am |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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Old thread, but just bumping it up as problem still exists
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Posted: Fri May 03, 2013 11:54 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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That's my picture. Can't see a yellow band at all.
Coolant sensors can be had from Euro Car Parts. Part number 224735211.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Fri May 03, 2013 12:25 pm |
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Joined: May 25, 2011
Posts: 1025
Trade Rating: +1
Location: south coast
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my 180 is all green with no yellow band
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Posted: Fri May 03, 2013 12:53 pm |
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Joined: Apr 21, 2013
Posts: 39
Trade Rating: 0
Location: West Sussex
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Why do you suspect the temp sensor? Have you tested it with a meter?
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Posted: Fri May 03, 2013 1:05 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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| Edward wrote: |
That's my picture. Can't see a yellow band at all.
Coolant sensors can be had from Euro Car Parts. Part number 224735211. |
The yellow band is clearly visible in your picture mate, how can you not see it lol 
Cheers for the part number, but its still the wrong sensor, tried it off eurocarparts, made my tick over insane.
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Posted: Fri May 03, 2013 1:08 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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| dannyboy-gti wrote: |
| Why do you suspect the temp sensor? Have you tested it with a meter? |
Its just what my mechanic said, hes my uncle so doubt he will be ripping me off, but at the same time he hasnt tested anything for a definitive answer.
Any ideas for my engine being horrid and lumpy tick over when cold, but perfectly smooth when warmed up?
Also, the worst part about it is, sometimes even when cold starting, the engine is fine. Tick over is fine. Sometimes when cold starting its lumpy like 300rpm to 800rpm, bouncing.
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Posted: Fri May 03, 2013 1:16 pm |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| MrMorris wrote: |
| Edward wrote: |
That's my picture. Can't see a yellow band at all.
Coolant sensors can be had from Euro Car Parts. Part number 224735211. |
The yellow band is clearly visible in your picture mate, how can you not see it lol
Cheers for the part number, but its still the wrong sensor, tried it off eurocarparts, made my tick over insane. |
I think you'll find that yellow is the sealing rubber lip on the plug connector, not a band on the sensor.
There are two types of engine/dash gauge (dual ellement) sensor for a 1.4i at least.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Fri May 03, 2013 1:35 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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ill get a close pic of mine. Its solid plastic. No seals between that or the green plastic. Just a chabge in colour, evenly printed on.
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Posted: Fri May 03, 2013 1:43 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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| dannyboy-gti wrote: |
| Why do you suspect the temp sensor? Have you tested it with a meter? |
Its just what my mechanic said, hes my uncle so doubt he will be ripping me off, but at the same time he hasnt tested anything for a definitive answer.
Any ideas for my engine being horrid and lumpy tick over when cold, but perfectly smooth when warmed up?
Also, the worst part about it is, sometimes even when cold starting, the engine is fine. Tick over is fine. Sometimes when cold starting its lumpy like 300rpm to 800rpm, bouncing.
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Posted: Fri May 03, 2013 1:48 pm |
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Joined: Apr 03, 2011
Posts: 189
Trade Rating: +1
Location: Over that hill.
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It might be a seal afterall, judging by the way the grime has set. not 100% sure tho. can't feel any change though, and no ridges, which you would expect if it was a seal.
Is anyone elses the same sensor colours as mine?
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Posted: Fri May 03, 2013 2:26 pm |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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Plug the car in to any scanner that gives live data and see what the coolant temperature is.
Lumpy idling could be down to dodgy lifters...all sorts of reasons.
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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