Question about 2005 Porsche Cayenne Turbo

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I have porsche cayanne turbo 2005 engine temprature overheating, i have changed almost everything and it is still overheating. I have changed the engine coolant, I changed the radiater, I have changed the thermostate, I have changed the catlists, and the turbo catalysts, and I just changed the fans, and chamged the relays of the fans. temp stays at 80, but when i press on the fuel and keep pressing (RPM on 3) the temp goes slowley and reach up to 90 c. Please help

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  • roseh81
    roseh81 Apr 28, 2013

    Thank you Gentlmen for offerring your help!!! I did all of that, changed the water tank, changed the cap. I am thinking of removing the thermostate at all and Also will try to change the water pump.

    all the technichens here are saying, when porsche start to heats up more than normal, its impossible to fix and i have to install new engine. I am afraid if this is correct... any idea!!!



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  • 11 Answers

It is possible that the water pump fins are wore out so the water pump isn't moving enough water. replace the water pump.

Posted on Apr 20, 2013


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SOURCE: 1985 Porsche 944 - Fans on radiator will not work

we will usually check fuses and relays first. then put power directly to the fans and see if they power on. this will narrow down your problem

Posted on Apr 12, 2010

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SOURCE: 2005 Porsche cayenne turbo engine problem

the repair manual is hard to find, now check the quality of engine oil , maybe need to replace and oil filter, try to use an high grade oil, for example, if now is using 5w_20 then use 10w_40

Posted on Jul 16, 2010

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SOURCE: can't accelerate my 2000 porsche carrera

inspect throttle linkage, if it is connected properly.
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Posted on Feb 22, 2009

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SOURCE: 1987 944 porsche transmission and differntial fluid

I'm assuming that this is a 5 speed stick car because you mentioned 80-90 oil. This car has a transaxle, not a a separate transmission and differential. The transaxle houses the transmission gears and the differential all in one housing. There is a drain plug on the bottom a fill plug on the side. Here's a link to one of the best do-it-yourself 944 sites on the web. Click on the "garage shop manual" link in the sidebar and scroll down to "transaxle fluid change".

Posted on Apr 26, 2009

  • 1 Answer

SOURCE: Porsche overheating & coolant loss through expansion tank

Check this out. Had the same problem. Easy fix. When you pull up at the lights does it blow steam everywhere as your water drips onto the exhaust. Next step is the water gets onto the coils engine light comes on and it mis fires!! Anyway solution. As it is doing it when you look at the bottom of the expansion tank you will see the water dripping. The tanks had a weakness and have I believe now been modified. Take it off and put your fingers over two of the three pipe holes, then blow down the other. Wifes often good at this!!! You will here a hissing as the tank has a pin hole in. It comes out fast as the pressure builds. To remove the tank undo the air box (1 x 10mm bolt and the screw on the large jubilee clip) Then undo the two petrol pipe bolts ensure your engine is cold. You should need a seventeen mm spanner. Then just under the engine lid you will see a 10mm nut which you need to undo. The box then slide forward toward the middle of the car and then back in a fastion!!! Give it a good blow you will see it. If you really must get in the bath with it and do it under the water.
Now get another and replace it.
Good luck everyone..... j 

Posted on Feb 13, 2010

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