Constant cold start, even when warm

[westy989]

Hey,

As I'm sure most LCR owners are aware, when the car is first started the revs sit higher for about 1-2 mins whilst the car is cold usually first start in the morning.

For the past few months even when mine is warm such as driving for 30 minutes then stop for petrol, when I restart the car it splutters and the revs fling up to about the same as a cold start and sit there for a couple of minutes basically 're doing the cold start even know the car is warm.

It's gradually got to the point where it does this every time I stop and restart the car wether it's warm or not.

I also now have an engine light come on, but therejs no difference In the way it drives, no performance issues or anything obvious happening.

Anyone that can help me would be grately appreciated !

Thanks
Michael

 

[bruceR]

Have you tried scanning for any flats???
This would be my first step

 

[Rivva]

Coolant temp sensor

http://vid950.photobucket.com/albums/ad347/ryanacater/VID-20131103-WA0000_zps4083e556.mp4

 

[Bouncerbeater]

Certainly sounds like coolant temp sensor, I had the same a few weeks ago, changed sensor and did the thermostat at same time as temp was sitting low on a run. Sorted it straight out

 

[westy989]

Thanks very much for the replies,

I am a bit of an idiot with cars and I apologise if this is ridiculous but what do you mean by "flats"?

Also it sounds very much the same issue as the last comment, mine also runs at a low temperature when on a run, I assumed this was because it was freezing outside and I have heat shield etc.

Is the thermosat and temp sensor easy to fit or will it be a trip to the garage ? Also any ideas on price and best place to buy ?

I have a mechanic that can do small jobs on the drive for me.

Thanks in advance lads

 

[westy989]

Coolant temp sensor

http://vid950.photobucket.com/albums/ad347/ryanacater/VID-20131103-WA0000_zps4083e556.mp4

Sorry mate just saw the video, your bang on the money that's exactly mine except I get a bit of a splutter and shitty start up. Could this also be why I have an engine light on ?

 

[Bouncerbeater]

I think he meant faults. And yes, both pretty simple to do

 

[westy989]

http://m.ebay.co.uk/itm/181546213357?nav=SEARCH

Would that be ok or do I need to order one from Seat ?

Just had a look at fitting guide, I think even I could do it !

 

[Bouncerbeater]

http://m.ebay.co.uk/itm/181546213357?nav=SEARCH

Would that be ok or do I need to order one from Seat ?

Just had a look at fitting guide, I think even I could do it !

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Should do the trick, I think most people say go far the green top one.

 

[xDaNx]

For what they cost just get a genuine one from someone like Dave @ Sere..

 

[Azza_]

spluttery starts and revs high can also be caused by the crank position sensor, although this normally brings up an EPC light too

 

[westy989]

Thanks for the reply lads, I have a guy coming round with a code reader in about 5 minutes so will let you know what it says.

I think I will try the cold temp sensor first as its cheap.

I have already replaced the crank shaft postion sensor with a genuine part at £80 so it better not be that !

 

[westy989]

Code reader said cold temp sensor boys, so will try that first and hopefully we will be golden.

Thanks for the help !

 

[westy989]

Hi guys, cold temp sensor doesn't appear to have changed it. It did for a little bit but now the light is back on.

The situation is that the water temp doesn't ever seem to rise properly unless at a stand still. I drove the entire way to Birmingham last week and it never reached 90 degrees until I sat in traffic. However the warm air seems to eventually come through. It takes a lot longer than it should to get properly hot but it will get there.

Does this sound like thermostat ?

 

[Richp]

Sounds like the stat. I'm having same issue at the moment. The code I get is for the the sensor or stat. I've changed the sensor and the stat is being done next week while in for cambelt.

Think the stat is a diy job though if a little fiddly to get to.

 

[westy989]

You'll have to let me know wether it fixes your issue, I recon I will give it a go myself. I can't think of anything else it could be ! Thanks for reply mate

 

[traumapat]

Hi guys, cold temp sensor doesn't appear to have changed it. It did for a little bit but now the light is back on.

The situation is that the water temp doesn't ever seem to rise properly unless at a stand still. I drove the entire way to Birmingham last week and it never reached 90 degrees until I sat in traffic. However the warm air seems to eventually come through. It takes a lot longer than it should to get properly hot but it will get there.

Does this sound like thermostat ?

Thermostat

 

[Richp]

You'll have to let me know wether it fixes your issue, I recon I will give it a go myself. I can't think of anything else it could be ! Thanks for reply mate

Will do mate. It goes in next weekend.

 

[Richp]

In case you haven't swapped it out yet. Got the car back with a new stat in and problem solved. Gets up to temp and stays there. Heaters nice and hot and warms starts correctly.