Headed out to dinner tonight, it drove fine for a mile or so and then started bucking badly. I kicked it into neutral, and it dropped right to idle. I tried to rev it up, and it revs right to 1500 rpm and then dropped to idle again then started bouncing between idle and 1500. When I took my foot out of it, it idles perfectly. I haven't had the opportunity to look at my datalogger or anything else, I just turned the car around and went back to get my roommates truck. I'm hoping it might be related to my washing the engine yesterday, although I've washed the engine every couple of weeks for the last four years and haven't ever had anything like this happen before. Another thing is that if I start the car it revs normally for the first 4-5 seconds that it is running, then cuts down again.
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