Vw polo TSI overheating

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Devsco
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Vw polo TSI overheating

Post by Devsco »

Good day

I am having a vw polo TSI CJZ engine, it has cooling system problem only when speeding but when driving at a lower speed it does not overheat, I have changed the water bottle and cap, water pump and the coolant pump but stil overheat ( it only over heat when speeding, when stationary it doesn't)
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Re: Vw polo TSI overheating

Post by J0NN0 »

Topic moved to correct section
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Devsco
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Re: Vw polo TSI overheating

Post by Devsco »

When diagnosing it, it says Cooler dry running, I have changed coolant pump, water pump, two temperature switches, water bottle and cap
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Re: Vw polo TSI overheating

Post by Tashveer »

Is the water level running low?

My wife's car had an issue about a year or 2 ago - there's an auxiliary cooler which is kinda behind the bottom grill. This got pierced and the car ended up losing water, resulting in it starting to heat up. Thankfully we found it in time and managed to get it sorted.


viewtopic.php?f=94&t=216654&p=2594138#p2594138

Hope this helps.
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Devsco
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Re: Vw polo TSI overheating

Post by Devsco »

Good evening

I have replaced the auxiliary pump... Stil the problem is not solved... Funny part is that it only overheat when driving at a higher speed... When driving in a traffic it does not overheat
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Re: Vw polo TSI overheating

Post by n.gov3 »

Devsco wrote: Sat Oct 02, 2021 9:56 pm Good evening

I have replaced the auxiliary pump... Stil the problem is not solved... Funny part is that it only overheat when driving at a higher speed... When driving in a traffic it does not overheat
Are you sure that there's nothing blocking airflow to the radiator? Packet or some other debri thats behind the grille somewhere?
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Re: Vw polo TSI overheating

Post by Devsco »

The is nothing I also removed the front bumper, removed the radiator and tried to clean it but the problem is not solved
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Re: Vw polo TSI overheating

Post by byro »

Just wanted to know if VW has voided any warranties due to decatting because I would like to decat my car but it’s still under warranty


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Re: Vw polo TSI overheating

Post by missioner »

byro wrote:Just wanted to know if VW has voided any warranties due to decatting because I would like to decat my car but it’s still under warranty


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Thread hijacking is rude.

Yes decat will void your warranty.
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Re: Vw polo TSI overheating

Post by Jaro »

Any results on this post I'm having same problems
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