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1997 Boxster

doncarol
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doncarol Member

doncarol

Posted
Posted

I have a 1997 Boxster that occasionally has an overheating indicator light. I check fluid, turn on heater, release air valve. The red overheat light only comes on sporadically. Any ideas where I should start would be appreciated.

txhokie4life Member

txhokie4life

Posted
Posted
:welcome:

Could be as simple as a bad sensor (on the bottom of the coolant tank.

Check coolant level -- open bleed valve see if there is air in the lines?

Check thermostat is opening properly (pull it and test it on the stove with a thermostat)

Check the water pump? They are only good for 60K miles and some die at 30K.

Are the fans coming on? Clean off/out radiator grill....

do not run overheating -- could lead to blown headgasket or equivalent.

m

kbrandsma Member

kbrandsma

Posted
Posted

Check your blue coolant resevoir cap in rear trunk. If it ends in 00 replace. I have a 98 with 64K and recently had to replaced mine with the latest version ending in 04.

Part number 996.106.447.04

pk2 Member

pk2

Posted
Posted (edited)

Is your temp gauge reading where it should be (need to elaborate) and it's just your light(?), before you go to nutz, find out if it is really overheating with a long thermometer. I'd lean towards Lorens thought a sensor, maybe even just a sensor wire grounding (or not). Intermittent problems are more likely to be electrical than mechanical.

Regards, Pk

Edited by pk2

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