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I had a situation once with a 3sge where the car would run normally up until about 40% throttle. When I crossed that threshold the engine would die. If I kept it past that threshold, I could actually cause the car to cut off.
I had to drive the car for about 20miles like that on the expressway. I was barely able to make 60mph.
I got off the expressway and disconnected my TPS. The problem went away. I bought a replacement tps a few days later, and never had the problem again.
The whole time I was having the issue, it never once registered a code for the tps. Somebody earlier in the thread mentioned that they checked the tps. Unfortunately, I don't think that checking tps resistance necessarily picks up on the problem.
So go and try driving around with the tps unplugged and see if the problem continues. It's an easy way to eliminate the tps as the issue.
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