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B5 running cold

Old Jan 12, 2012 | 05:08 PM
  #1  
jcA4Quattro's Avatar
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Default B5 running cold

Hey all

I already know my thermostat is open all the tims, my car is constantly running between 140.F and 158.F maxed. It will stay at 140.-145.F while driving and after i shut it off for 10 minutes it only goes to 158.F or so.

I am wondering if it being that cold if it will rob me from the little Horsepower that we have as it is with the 1.8T. Anything else i should keep an eye on?

Thanks
 
Old Jan 12, 2012 | 05:12 PM
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Generally when an engine runs cooler it will inject more fuel, thus putting out less power. In most cases hotter engines also produce more power even without factoring in air-to-fuel ratios.

So yes, you should have your thermostat replaced. The hardest part for me was getting the new o-ring to line up properly between the thermostat housing and the thermostat. And also, you could re-use your coolant if you initially drain it into a clean container.
 
Old Jan 12, 2012 | 05:16 PM
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MetalMan,
Awesome m8, thanks for the info. The coolant looks newly done,it is still clean so it should be re usable.
 
Old Jan 12, 2012 | 05:36 PM
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If it looks okay then I see no reason not to. Just as recently as 2 weeks ago I reused about 1 gallon of coolant (mixed 50-50) drained from the radiator so that I could remove the turbo coolant line from the engine block.
 
Old Jan 12, 2012 | 05:51 PM
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You'll want to pour itthrough a coffeefilter or paint filter first - even clean looking coolant can be made more clean
 
Old Jan 12, 2012 | 05:59 PM
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Very true sir, very true. Thanks , i had almsot forgot about that.
 
Old Jan 12, 2012 | 06:07 PM
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Originally Posted by ImTheDevil
You'll want to pour itthrough a coffeefilter or paint filter first - even clean looking coolant can be made more clean
Meh.
 
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