Author Topic: overheating why?  (Read 2780 times)

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jock

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overheating why?
« on: May 14, 2006, 21:48:20 PM »
right guys need some advice my calibra turbo engine is totally standard has started to overheat today twice its spilled out most of the coolant and ive heard and seen the fan going anyone got any ideas please?

Offline ClubCalibra

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Re: overheating why?
« Reply #1 on: May 14, 2006, 23:06:29 PM »
Could be head gasket or simply an overfilled coolant tank? Not really my area so will leave someone else to advise!
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nigescalli

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Re: overheating why?
« Reply #2 on: May 14, 2006, 23:16:19 PM »
could also be a air lock blocked breather but check for cream in the oil and the oil cap cos then it more than likely is the head gasket

Offline CalibraTurbo666

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Re: overheating why?
« Reply #3 on: May 15, 2006, 00:09:47 AM »
Check the rads not blocked, i had an overheating cally when i got it, a few garages said defo headgasket, but was a totaly blocked radiator, didnt overheat when stationary though only when driving

Offline [email protected]

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Re: overheating why?
« Reply #4 on: May 15, 2006, 00:31:29 AM »
The std intercooler on the Turbo isn't very big - only 1L I believe - so in hot weather it struggles to cool the intake air enough.  Result: loss of power due to hotter, less dense air being compressed by the Turbo.  However, this shouldn't be a major problem until ambient temperatures reach the high twenties, or exceed thirty degrees.
Julian had this problem on his Turbo coming back from Billing one year, when the air temp was around 33 degrees.  Trying to keep up with my V6 across country, he cooked his engine & had to stop @ Deddington to let it cool down!
However, recent temps haven't been that high, so there must be some other problem.  Check all the obvious possibilities first:  under, or over-filled coolant [remember that coolant expands as it gets hotter, so if you topped it up when it is was cold, it could have been overfilled; check that the thermostat is not sticking & allowing coolant to bypass the radiator; check the rad for blockages & try flushing it out; check the coolant & oil for tell-tale signs of head-gasket problems: oil in coolant, or creamy foam on oil filler cap.

dj_smurph

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Re: overheating why?
« Reply #5 on: May 15, 2006, 07:13:22 AM »
i sthe fuelling of if he is running very lean the internal engine temps will rocket

jock

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Re: overheating why?
« Reply #6 on: May 15, 2006, 07:29:11 AM »
theres no tell tale signs of the famous head gaskett ie no creamy much underside of oil cap and no oil in the water,ive also still got hot air inside the car,ill have to double check the water level later on after work

Offline J A M E S

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Re: overheating why?
« Reply #7 on: May 15, 2006, 08:55:16 AM »
Check the pipes, make sure there isn't a small hole somewhere. I would suspect and air-lock.
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If you have to own a Calibra; make sure it's the 4x4 turbo. You dont want to fanny around with a FWD car.