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My 1989 TC (2L turbo) overheated two months ago. Was a perfect storm of blown fuse for engine fan and a cracked water pump. Pump was still under warranty from being replaced last year (after purchase of car), so garage replaced no problem. Since then, all has worked fine. Then, the other day, I pulled into the garage at work and saw the temp gauge was absolutely pinned to H. I parked and let it cool. No smoke, no drips of any kind. Since then: fan seems to kick on fine at about the 2/3 mark, bringing the temp down. But the more I push the car -- especially long hills -- the more the temp creeps up, and at a certain point the fan stops helping. (Rather than risk blowing the engine, I pull over, let it cool down, and continue on, but it's seriously crimping my cool guy TC lifestyle.)

 

Is this possibly a leak in the turbo cooling hose? Something else relatively fixable? 

 

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28 minutes ago, NoHo Matt said:

My 1989 TC (2L turbo) overheated two months ago. Was a perfect storm of blown fuse for engine fan and a cracked water pump. Pump was still under warranty from being replaced last year (after purchase of car), so garage replaced no problem. Since then, all has worked fine. Then, the other day, I pulled into the garage at work and saw the temp gauge was absolutely pinned to H. I parked and let it cool. No smoke, no drips of any kind. Since then: fan seems to kick on fine at about the 2/3 mark, bringing the temp down. But the more I push the car -- especially long hills -- the more the temp creeps up, and at a certain point the fan stops helping. (Rather than risk blowing the engine, I pull over, let it cool down, and continue on, but it's seriously crimping my cool guy TC lifestyle.)

 

Is this possibly a leak in the turbo cooling hose? Something else relatively fixable? 

 

You haven’t told us if you are actually loosing coolant or only running hotter under load.  If the second is true, it’s possibly a restricted radiator.

Are you driving in very hot weather?
I live in Arizona, I also see my coolant temperature running hotter under these conditions. 

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Not losing coolant, I think just running hotter. I'm in Los Angeles, specifically the Valley, which is 8-10 degrees hotter than the rest of it. Is a restricted radiator something I can adjust? Sorry - I'm mechanically inexperienced.

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13 minutes ago, NoHo Matt said:

Not losing coolant, I think just running hotter. I'm in Los Angeles, specifically the Valley, which is 8-10 degrees hotter than the rest of it. Is a restricted radiator something I can adjust? Sorry - I'm mechanically inexperienced.

It will require a radiator shop that can ‘hot-tank’ the radiator and clean out the coolant tubes inside the radiator. 
There are NO REPLACEMENT radiators made for these turbo engines. Find a radiator shop that looks like they have been in business for a long time, not just a place that tries to sell you a new one, unless they can replace the radiator CORE only, if it needs replacement. 
I have a friend who blew up 2 engines because he neglected to keep an eye on the temperature gauge.

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