Kwik Fit over-heated my 911
Discussion
Took my 2006 C2S for an MOT at Kwik Fit and left it there while they tested it on Friday - hottest day of the year. When I came back the car was sat up on the ramp idling with the engine cover open. Obviously with the engine cover open you remove a massive part of the car's cooling capacity as the fan under the cover is designed to pull air through and out the top, thus adding cooling performance.
Sure enough, when the guy drove the car out to park it it boiled over. He says the engine wan't running at the time, that he parked, turned it off and that's when it boiled over. I didn't se any of that and I don't know whether any of it is relevant.
I've had the car 5 years ad never, once, even on the hottest days has the gauge ever moved for 80c. Ever, even when it's hot with both fans kicking it it doesn't move the dial. It clearly over-heated because it was left running with the engine cover open.
Obviously I've lodged a complaint, but how worried should I be that this could have caused damage? Obviously I'm worried about bore scoring mainly but also head gaskets etc. It was running really lumpy when I finally drove it home (c2 hours after it had boiled over) but seems ok today.
Sure enough, when the guy drove the car out to park it it boiled over. He says the engine wan't running at the time, that he parked, turned it off and that's when it boiled over. I didn't se any of that and I don't know whether any of it is relevant.
I've had the car 5 years ad never, once, even on the hottest days has the gauge ever moved for 80c. Ever, even when it's hot with both fans kicking it it doesn't move the dial. It clearly over-heated because it was left running with the engine cover open.
Obviously I've lodged a complaint, but how worried should I be that this could have caused damage? Obviously I'm worried about bore scoring mainly but also head gaskets etc. It was running really lumpy when I finally drove it home (c2 hours after it had boiled over) but seems ok today.
I am no Porsche expert but the radiators are at the front, right?
So the fans will be behind the radiators.
And the main cooling will be from this, not the fan that's effectively passing air through the engine compartment.
I don't see how having the engine cover open would cause it to over heat, and I don't really think it's Kwik Fit's fault, how many times have we left our bonnets open etc while doing maintenance of testing etc.
I guess the lesson would be that you should use a suitable specialist in the future.
As for bore scoring, I suspect if you were going to have any problems this wouldn't really add to it. Did the car actually "overheat" (IE on the gauge) or did it just spill some water from the expansion tank?
Also, to be fair again just because it's never over heated before doesn't mean it would now. Don't some 996 not even have fans on the rear deck?
So the fans will be behind the radiators.
And the main cooling will be from this, not the fan that's effectively passing air through the engine compartment.
I don't see how having the engine cover open would cause it to over heat, and I don't really think it's Kwik Fit's fault, how many times have we left our bonnets open etc while doing maintenance of testing etc.
I guess the lesson would be that you should use a suitable specialist in the future.
As for bore scoring, I suspect if you were going to have any problems this wouldn't really add to it. Did the car actually "overheat" (IE on the gauge) or did it just spill some water from the expansion tank?
Also, to be fair again just because it's never over heated before doesn't mean it would now. Don't some 996 not even have fans on the rear deck?
tRadiators with cooling fans are in the front.
The engine cover fan is to get the hot air out of the engine bay, having the lid open instead will be much better at letting the hot air out.
There is a later revision number for the coolant expansion cap as the early ones fail and do not hold pressure. If the part number on your cap ends in 01 then it is more likely to be a faulty cap than anything else. Edit:I checked on my car and I have cap revision number 04 so there have been a few attempts to get it right.
The engine cover fan is to get the hot air out of the engine bay, having the lid open instead will be much better at letting the hot air out.
There is a later revision number for the coolant expansion cap as the early ones fail and do not hold pressure. If the part number on your cap ends in 01 then it is more likely to be a faulty cap than anything else. Edit:I checked on my car and I have cap revision number 04 so there have been a few attempts to get it right.
Gixer968CS said:
Took my 2006 C2S for an MOT at Kwik Fit and left it there while they tested it on Friday - hottest day of the year. When I came back the car was sat up on the ramp idling with the engine cover open. Obviously with the engine cover open you remove a massive part of the car's cooling capacity as the fan under the cover is designed to pull air through and out the top, thus adding cooling performance.
Sure enough, when the guy drove the car out to park it it boiled over. He says the engine wan't running at the time, that he parked, turned it off and that's when it boiled over. I didn't se any of that and I don't know whether any of it is relevant.
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Just check that the rads haven't split. Most times the rad fails is actually when it begins to cool (it tends to implode)Sure enough, when the guy drove the car out to park it it boiled over. He says the engine wan't running at the time, that he parked, turned it off and that's when it boiled over. I didn't se any of that and I don't know whether any of it is relevant.
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Digga said:
Scrump said:
The engine cover fan is to get the hot air out of the engine bay, having the lid open instead will be much better at letting the hot air out.
I was told 9could be wrong) that the fan does a far better job of moving the heat out than leaving the decklid open.Gixer968CS said:
It does, it pulls the air through making a cooling effect with a flow of air. Opening the lid will just let heat out but it doesn't actively cool the engine bay like the fan in the lid will.
The hot air will, obviously, rise and will be replaced by cooler air from wherever the fan would have pulled it from. Yes, the fan will move the air faster, but I doubt that'll be critical unless someone was holding the revs at a high level.Gassing Station | 911/Carrera GT | Top of Page | What's New | My Stuff