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Engine shuts off while driving when it's 180 + degrees. Won't start until until it cools down.

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Hello to all.First time here and I hope I'm doing this right.

We have a 1999 Cabriolet that has been pretty much free of engine problems for 130,000 miles. What's happening now is the engine shuts down when driving when the the temperature gets past 180+ degrees. Immediate shutdown as if it ran out of gas. It will not start back up until it cools down for about 1 hour. Then it starts and runs fine. 

Any and all help would be appreciated.


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3 hours ago, Daniel Ortiz said:

Daniel again .I should have also included this information :

Using a computer I got these two codes :

a) Code P0410

B) Code P1411 cylinder 4&6


Both codes are for a secondary air injection system malfunction, possibly a vacuum leak.

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It's been a while since I have logged into this forum but I was plagued by these 2 codes for a long time and when I had first purchased my 99 996, I recall more than a few occurrences when the car would not start until it cooled down but never quit while I was actually driving. I had some hesitations and poor fuel economy going on until I replaced the pre-cat Oxygen sensors. I also had the air injection valve replaced (the one located behind the alternator). The latter was rusted big time and when the mechanic turned it upside down onto the palm of my hand, lo and behold, rust granules galore spilled out. When you state Cylinders 4 and 6, are you referring to a misfire that your scanner picked up or what ?

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