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Old 19-12-2009   #1
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Angry MK1 Punto Temp Gauge issue

My 75elx punto never seems to get past 1/4 on the temp gauge, and it takes about 30 mins of driving before it even reaches that, I know this is most likely a thermostat issue, but will this issue be the cause of the car randomly cutting out when changing down gears and when stopping, at traffic lights for example?

your help will be much appreciated...
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Old 19-12-2009   #2
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Re: Punto temp issue and cutting out..

Probably not. Fix the thermostat first, then look at earthing issues or the TDC sensor.
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Old 20-12-2009   #3
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Re: Punto temp issue and cutting out..

There is a half chance that the temp sensorfor the ECU thinks the engine is warmer than it actually is and adjusting the fuel to suit that wrong temp, or even that its colder than it is.

Whatever, sort the thermostat issue first.

Cheers

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Old 21-12-2009   #4
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Re: MK1 Punto Temp Gauge issue

Short answer, yes.

The ECU requires accurate temp readings to get the right amount of fuel to the engine.

Cheers

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Old 23-12-2009   #5
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Re: Punto temp issue and cutting out..

Thanks for replies, not had a chance to look at this yet, It's bloody freezing outside with all the snow lol..

I was shocked to see the car start with no issues yesterday afternoon, and the temp on the gauge went up to 1/4 within about 10 mins, much quicker than usual. usually takes 30/40 mins

Once I've had a chance to look i'll let ya know.. Fingers X'd she starts ok today
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Old 23-12-2009   #6
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Re: Punto temp issue and cutting out..

could be a weak antifreeze mix... When was it last changed?
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Old 23-12-2009   #7
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Re: Punto temp issue and cutting out..

I have no idea lol. I've bought some, but mate who looks at my car is away at the mo. I have no knowledge about engines what so ever haha. I bought some from Halfords the other day.

If it was to be the thermostat that is faulty, stuck open etc, wouldn't that effect the heat being pumped into the car from the heater? cos that heats up fairly quickly.

Could car not reaching core temp be due to low or no anti freeze and if the level is low? i'm going to check this today. Though in the summer when it's hot still have same issue.

thanks.
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Old 23-12-2009   #8
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Re: Punto temp issue and cutting out..

Nah if its stuck open you will still get some heat into the cabin just not as much as you would if your temp guage reached half way (normal temp).
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Old 23-12-2009   #9
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Re: Punto temp issue and cutting out..

ok thanks... How do I check the levels in the radiator, I can top it up with water/antifreeze mix if req. i'll have to see what the level is in the overflow reseviour
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Old 23-12-2009   #10
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Re: Punto temp issue and cutting out..

Ok. I've looked at the radiator fluid and it was empty!.. Didn't see a leak when i filled it up with 50/50 water, antifreeze ratio.

I've been trying most of the day today and car wont start now, I've tried jumping, batter seems fine as she ticking over but not starting. No wetness under the hood.. Any suggestions????
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Old 23-12-2009   #11
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Re: Punto temp issue and cutting out..

Make sure your plugs are sparking, what has been touched? HT leads? anything?
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Old 23-12-2009   #12
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Re: Punto temp issue and cutting out..

Quote Originally Posted by bredsticz View Post
Make sure your plugs are sparking, what has been touched? HT leads? anything?
I know nothing about cars, and this close to xmas I can't afford a mechanic to have a look see, I've not touched any cables as dont know what i'm doing.
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Old 23-12-2009   #13
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Re: Punto temp issue and cutting out..

hmmm, have you tried starting her while putting the accelerator on, only thing i can think of you'd be able to do without touching the engine. Will the starter stay ticking over? Does is sound weaker than usual? Turn lights on when trying to start if they go dim or off its the battery
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Old 23-12-2009   #14
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Re: Punto temp issue and cutting out..

Quote Originally Posted by bredsticz View Post
hmmm, have you tried starting her while putting the accelerator on, only thing i can think of you'd be able to do without touching the engine. Will the starter stay ticking over? Does is sound weaker than usual? Turn lights on when trying to start if they go dim or off its the battery
I've tried the accelerator couple of times, i know this can flood the engine if done too much, I've not tried the lights thing, but if it was the battery she should have started when jumped up? the sound stays the same tone and pitch when ticking over. d
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Old 23-12-2009   #15
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Re: Punto temp issue and cutting out..

Sounds like your pretty snookered. Lack of coolant suggests Headgasket failure, especially as you say theres no leaks.

Any milky looking smeg in your oil filler cap?
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