Help with my new car - Vauxhall Astra 1.6 8v Club 2004

Aidan Hickman said:
Took it to a garage close to me and was quoted around £200
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That is ridiculous.

I had my Golf GTI thermostat changed and that was connected to the cam belt right at the bottom of the engine.

I got it done for £120 incl part. Think you need to try another garage.

Try the OBD reader as suggested.

Also. Did you drill a hole in the thermostat?

I’m assuming you followed a guide online?
 
Swifty55 said:
That is ridiculous.

I had my Golf GTI thermostat changed and that was connected to the cam belt right at the bottom of the engine.

I got it done for £120 incl part. Think you need to try another garage.

Try the OBD reader as suggested.

Also. Did you drill a hole in the thermostat?

I’m assuming you followed a guide online?
Click to expand...
Swifty55 said:
That is ridiculous.

I had my Golf GTI thermostat changed and that was connected to the cam belt right at the bottom of the engine.

I got it done for £120 incl part. Think you need to try another garage.

Try the OBD reader as suggested.

Also. Did you drill a hole in the thermostat?

I’m assuming you followed a guide online?
Click to expand...

Yes I drilled a 2mm hole in the thermostat, I’ll try a different garage as well but don’t suspect it to be the thermostat anymore.
 
The car does have a few mods however I don’t see these causing an issue to the temp. It’s got a performance exhaust header, middle box delete, lowered and alloys obviously none of this should affect the temp but always good to make sure.
 
Changing the exhaust header/manifold usually need a retune. But I doubt a 1.6 Astra is reaching the limits of it's stock header tbh so probably best to go back to stock and retest it.
 
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Nasher said:
Changing the exhaust header/manifold usually need a retune. But I doubt a 1.6 Astra is reaching the limits of it's stock header tbh so probably best to go back to stock and retest it.
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Bought the car like it no idea what it’s had done apart from what they told me

EDIT: I’ll go to a scrap yard and pick one up next week probably see if there’s a change. Any ideas if this could cause it to run rough too? Because if I give it a bit of pressure it starts running rough and then to stop it I need to turn it off and on again.
 
Just to recap.

So you’ve added a new thermostat and replaced the temp sensor?

Does the gauge reach correct temps at a standstill and still drop when driving?

Have you tried OBD reader yet to see what actual temp the water is running at when the car has heated up?
 
Swifty55 said:
Just to recap.

So you’ve added a new thermostat and replaced the temp sensor?

Does the gauge reach correct temps at a standstill and still drop when driving?

Have you tried OBD reader yet to see what actual temp the water is running at when the car has heated up?
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Yep replaced all that and yes it will heat up at idle but as soon as I go 30mph it drops to just above the cold line. My OBD scanner doesn’t report temps so I’m going to have to buy a new one and wait for that to be delivered. It’s not losing coolant, oil or any other fluids. I have realised that it heats up much quicker since replacing the sensor but don’t know How that’s useful.
 
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