Overheating 944S2

[thegaryg]

Help !
My 944s2 had a replacement engine installed by a good porsche specialist but overheats (lets not go into why it came back like that or why they didnt resolve it). The symptons are :
-temperature gauge hits red when at very low speed
-putting the heater on backs the gauge down to 9 oclock
-both thermostats changed, no impact
-both fans kick in
-at motorway speeds the temperature gauge is rock solid at 9 oclock

the garage initially said it wasnt overheating and plugged it in to a laptop to show engine temp looking ok suggesting the gauge was wrong but I suspect it wasnt run enough to get up to red. Later it was suggested that it might be the waterpump..(ie recognising it was overheating)

So ..any ideas to economic resolution ? Another garage reckons blocked radiator (which wasnt replaces and fine with the old engine).

Clearly I'm mechanically ignorant but this car is my daily drive, I love it and dont want to kill it (or have to sell a child to pay to get it fixed)

Thanks for any pointers..

[pauljmcnulty]

They are very hard to bleed properly. How confident are you that they raised the front end to ensure all the air was out of the system?

[Welshbeef]

Could be an air lock
Could be water pump
Could be blocked waterways - put your hand on the rubber pipe and you should feel the water moving through it when up to temp
Could be blocked radiator
Could be faulty guage
Could be faulty relay ie the thermostats all work but then the fans don't kick in. At driving speed air flow would always stop it overheating unless you had a blocked grill preventing airflow.


Start with the first.

Also if as you say your not competent get a mechanic to check it out.

[thegaryg]

Thanks for the rapid response - I'll go with the airlock first. Ill let you know...Much appreciated
G

[Welshbeef]

You do now of course have to post up a pic of your beast!!

I personally have always had a hankering for te 944 Turbo/Turbo S/S2 always loved the shape and the handling.

[MrCooke]

Are the cooling fans wired up the right way round?

[thegaryg]

Welshbeef - sorry been away, dont want to appear rude after you took the time to advise. Photo to come, just planning garage approach. Will let you know and post photo. Great fun car to drive although you have to keep the revs up to make the most of it.

[Helen Goff]

MrCooke said:

Are the cooling fans wired up the right way round?

beat me to that. i've seen a 944 with the fans fitted the wrong way around

[pauljmcnulty]

thegaryg said:

Great fun car to drive although you have to keep the revs up to make the most of it.

Get the Promax chip, or similar. No real power increase but a much smoother torque curve.