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Posted by MIKE (93VE) on July 20, 2002 at 20:02:38:
Second, recently the past few days I've been getting this bucking/surging, like the engine wants to stall kinda like when you hit the rev limiter. The first time it happened, like usual I was like "Here we go, now what" The second time it happened I tried to notice any unusual noise, warning lights, etc. The third time it happened I realized I was on the same road where it happened the second time and going the same mph, 50-55mph. At this point I tried increasing and decreasing my speed to see if the surging/bucking stops and sure enough it did. I go back to that 50-55mph range and the surging/bucking comes back. At this point I'm thinking either TPS or VSS. I'm more partial to the TPS being bad instead of the VSS because the VSS will "probably" effect the driveability thru-out the entire mph range instead of 50-55mph. I said probably. Now I'm thinking it's the TPS because the TPS probably have a bad spot in its potentiometer which might cause this surging/bucking and once I depress or release the throttle which changes the TPS position problem goes away. I've been having others issues with my auto tranny which led me to believe my TPS was bad and with this new problem I'm little more confident it just might be the TPS As stated before "Only for those who don't have a date on Sat night" then again it's only 9pm EST. Have fun and don't forget the latex :)
To begin with, when ever I use my auto down window button it only goes down if I keep depressing the button, once I let go it stops and so on and so on. I thought I had remember back in the days when I'll hit that button once and all the way down it went without any hesitation. Basically the auto down button is acting like a manual button in the down position. Speaking of which, when you hit the auto button and the window goes all the way down as it suppose to how does the motor know when to stop turning? I've had my door panels off in the past for various reasons and never notice any type of limit switch, or is the mechanism that stops the window built into the motor?