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Cooling System


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as i drive my boxster 99 in a hot days...my water temp gauge goes up from 180F to about 220F a little bit off the center..Is this normal on all boxster..I live in florida which is a sun city... but i think that it is not normal for water temp to rise to 220F for a traffic and a sunny day...any suggestions on how to keep the temp gauge pointer from rising..is dont want to jump cleaning the radiator right away..i want to see first if there may be other reasons..or if that is normal for bosxter since its a high compression engine..1:11 compression ratio..

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'Normal' for stop and go traffic on a 'warm' day would be for the temp guage to be at the 12:00 high position or just a tick above that..not much more and you should hear the front fans kick on when you are sitting in traffic. When you resume driving and get airflow over the front rads the temp should tic down to it's 'normal' hot position at right about 12:00 high. At highways cruising speeds it should tick down a bit more. I have installed a 160 t-stat that does help a bit with 'hot' weather stop and go driving. The car does still register right at the 12:00 high setting when I'm sitting. All the 160 t stat does is open up the system a bit sooner and keep the coolant flowing eariler. Also upgrading to the 'S' oil cooler is a great upgrade. It's almost double in size and can be obtained for $100.00 used. All you will need is new o rings and a coolant top off and pressure check. It's good to do the 160 deg t-stat and the bigger oil cooler at the same time.

You mentioned that you were going to clean the front rads...this is a MUST DO if it has not been done for a long period of time. I did ours recently and you'd be amazed at to what gets in there and lodges between the two parts (A/C condenser and the rads).

From what you describe yours is running as it should...check your coolant level to be sure all is well with the fluid level.

Good luck

m2

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+1 on what mcmike27 said. you are pretty normal for Florida. BUT clean those rads. not necessarily a fun job but a must do job. also pull you a/c condesors out and clean in between the radiators. DO IT. also the 160 thermostat from LN engineering is a great idea, I did it to my car and really helped

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'Normal' for stop and go traffic on a 'warm' day would be for the temp guage to be at the 12:00 high position or just a tick above that..not much more and you should hear the front fans kick on when you are sitting in traffic. When you resume driving and get airflow over the front rads the temp should tic down to it's 'normal' hot position at right about 12:00 high. At highways cruising speeds it should tick down a bit more. I have installed a 160 t-stat that does help a bit with 'hot' weather stop and go driving. The car does still register right at the 12:00 high setting when I'm sitting. All the 160 t stat does is open up the system a bit sooner and keep the coolant flowing eariler. Also upgrading to the 'S' oil cooler is a great upgrade. It's almost double in size and can be obtained for $100.00 used. All you will need is new o rings and a coolant top off and pressure check. It's good to do the 160 deg t-stat and the bigger oil cooler at the same time.

You mentioned that you were going to clean the front rads...this is a MUST DO if it has not been done for a long period of time. I did ours recently and you'd be amazed at to what gets in there and lodges between the two parts (A/C condenser and the rads).

From what you describe yours is running as it should...check your coolant level to be sure all is well with the fluid level.

Good luck

m2

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