Here I am

was hot now cool... could my turbo be damaged?

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TS MP8/TST stack

egt temperatures

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My symptoms are:



1 I have temps pushing redline temps (245'sh) according to my stock temp gauge, when pulling long hills whith heavy loads.



2 A code on the odo p0483 = Cooling Fan Speed. Keep in mind i can still hear it working.



3 A screaming/nails across the chaulkboard type sound when pulling high rpm/heavy throttle hill pulls with a load. But it will cut out when the ac compressor engauges. (Normally I turn it off)



4 The fan does operate but you cannot hear it loud until the temp is above 220* or when slowing down for a red light it will kick on real loud when temp is not even near high 200* sometimes lower.



I put a 180* t-stat in awhile back and I cannot tell a difference when pulling a load, unless going down for awhile.







I used to have the turbo barking at me on nearly every uphill downshift now I never hear it. What kind of damage can that do to a stock turbo? And could that contribute to the above mentioned problems???
 
I attribute the cooler water temps to reduced ambiant temps but I still think that it should not be running those high temps reguardless of ambiant temps.
 
sounds like a bad fan clutch, and a bad bearing, maybe a alternator? they take the heat the worst. check those first then check the anti freeze and turbo end play you know, in and out. let us know what you find.....
 
update...



fan clutch seems to be fine and nothing else has happened in 4k miles.



I talked to my amsoil dude about their coolant specifically asking if it had better cooling properties. He asked me if I was having problems, to which I briefly explained. He then rattled off some of my symptoms and explained that it is probably my radiator. Seems this little shop he supplies has replaced a few of them because the flow is reduced as a result of some internal breakage. They haven't said what specifically but make it sound as though it is because they are cheap plastic non-rebuildable/fixable radiators.



Now the theroy sounds good enough to me to have them check my flow. Does anyone know what it should be?



If it turns out my radiator is falling apart I want one that isn't made of plastic, anyone know a good source?



How much?



Thanks
 
Turns out having it flow tested requires pulling it out and sending it off for the test. I don't really have time to do that.



How many here have had their radiators go bad???
 
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