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Posted: Sun Jul 03, 2016 2:11 pm |
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Joined: Feb 08, 2010 Posts: 3262
Trade Rating: +18
Location: Plymouth
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Noticed recently the car has started to show a few issues, hopefully nothing serious!
1)
Noticed when I try to start the car after its been on a long drive or sat in heavy traffic it struggles to start, always when the engine temp is at 90 or above
Any other time the engine starts first time without any issues, been told it could be the starter motor because of where it's located but others have told me it's very doubtful to be the cause.
2)
When the fan kicks in, the car sounds like a dirty derv, has only just started in the last 4 months, have had no impact on the front and cant see it catching on anything so i'm at a lost
Any ideas guys?
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Posted: Sun Jul 03, 2016 3:59 pm |
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Joined: Feb 07, 2010 Posts: 3085
Trade Rating: +12
Location: Essex
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Sounds like a temp sensor issue.... does it feel like its a bit rich and needs a bit of pedal to start it?? Or is it really slow to turn over in which case it could be starter related
The fan may have gone out of balance or the motor bearing is shot.... cant think of a cure except replace it..... sorry mate
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Posted: Sun Jul 03, 2016 4:29 pm |
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Joined: Feb 08, 2010 Posts: 3262
Trade Rating: +18
Location: Plymouth
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macj wrote: |
Sounds like a temp sensor issue.... does it feel like its a bit rich and needs a bit of pedal to start it?? Or is it really slow to turn over in which case it could be starter related
The fan may have gone out of balance or the motor bearing is shot.... cant think of a cure except replace it..... sorry mate |
Cheers mac
Yeah when I try to start the car when hot it will start quicker if I give it a little gas, if I don't it just sits there a bit longer trying to start
When it's cold though it starts instantly.
Thanks mate, will look into changing the radiator over
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Posted: Sun Jul 03, 2016 6:45 pm |
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Joined: Feb 08, 2010 Posts: 7045
Trade Rating: +5
Location: In the garage
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Batteries don't like heat . Does the engine turn over normally but just won't fire?
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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: Sun Jul 03, 2016 7:27 pm |
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Joined: Feb 08, 2010 Posts: 3262
Trade Rating: +18
Location: Plymouth
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Edward wrote: |
Batteries don't like heat . Does the engine turn over normally but just won't fire? |
Yeah but none of the other 180 owners at FCS had the same issue with theirs, and they had also been waiting to go on track, did 2 laps of combe and started without any probs
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Posted: Sun Jul 03, 2016 11:35 pm |
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Joined: Feb 24, 2010 Posts: 2596
Trade Rating: +17
Location: North West Wales
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Starting issue, id go with either coolant temp sensor, or crank shaft position sensor.
And fan just replace, not much else that can be done apart from maybe squirt some wd40 in the bearings as a temp fix too see if it improves it or not.
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Posted: Mon Jul 04, 2016 6:51 am |
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Joined: Feb 07, 2010 Posts: 3085
Trade Rating: +12
Location: Essex
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MattyP wrote: |
macj wrote: |
Sounds like a temp sensor issue.... does it feel like its a bit rich and needs a bit of pedal to start it?? Or is it really slow to turn over in which case it could be starter related
The fan may have gone out of balance or the motor bearing is shot.... cant think of a cure except replace it..... sorry mate |
Cheers mac
Yeah when I try to start the car when hot it will start quicker if I give it a little gas, if I don't it just sits there a bit longer trying to start
When it's cold though it starts instantly.
Thanks mate, will look into changing the radiator over |
I would do temp sensor first before radiator
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Posted: Tue Nov 01, 2016 9:40 pm |
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Joined: Jun 16, 2015 Posts: 1
Trade Rating: 0
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I don't know if this is solved but this is my thoughts on it...
Also started writing all this and then realised the last post was months ago
if it's going above 90 you may have a bit of a cooling issue. So you may want to start with changing the coolant and making sure there isn't an air lock, then i would change the rad fan if it doesn't sound good (smooth) as it tend to be a sign that it's on its way out.
The hot start issue will probably be because, when the ignition is first switched to key position 2 it fires up the fan at full speed where the coolant temp is high, this will be drawing a fair wack of current from the battery, current which will not be being provided to the starter motor whilst you are cranking on key position 3, thus not allowing the starter motor to spin at full speed and making it harder to fire.
Then the age of your battery tends to show as the older it is the less current it will be able to supply and so it doubles the effect of struggling to start.
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