I have a 1995 9000CS with 145,000 miles on it. I've been having an
> acceleration problem with it. It has the 2.3L LPT engine, rated at 170 hp. >
> When I push the accelerator farther down than about halfway, it bucks
> violently. My mechanic has diagnosed it as a wastegate that gets stuck
> closed. He says the turbo pressure builds up and supplies too much
> boost. Then the computer notices it and cuts the fuel supply. I wouldn't
> mind except that it causes violent lurching, and it's quite unpleasant. >
> He said he squirted in lots of anti-seize and worked it back and forth a
> lot. (I have no idea how hard it is to reach.) It was fine for two or
> three days, and then the problem came back. I have to drive gently in
> order to prevent the problem.
>
> He says that at this point, my choices are 1. live with it, 2. he can do
> the same thing, and it's likely to recur again, or 3. pay $800 or $900
> and get an entirely new turbo unit in.
>
> Are there any other possibilities? I don't know how these things are
> constructed, but it sure would be nice to replace the wastegate and
> leave the rest of the turbo.
>
> I don't think I want to live with this problem, because I want to sell
> the car soon, and I don't want to sell the car with such an obvious defect. >
> Thanks.
>
> Tom Reingold
> Noo Joizy
I own a 1997 9000 cs and have had the same problem. It`s a fairly common problem with the lpt engine for some reason. I bought mine with this problem but soon figured it out. I took a can of WD40, PB blaster or some other spray lubricant or rust buster and sprayed it all over the linkage of the wastegate. It worked great for about 8 months or so and it started to act up again. Just another spray and all was well again. The symptoms were just as you mentioned. When the waste gate would stick the engine would over boost and the fuel shut off would kick in until you set off on the throttle a little and give it throttle a little slower. I figure as long as I just have to give it a spray every 8 months or so I will live with the problem for now. btw It is a pain in the ass to get to it from above without putting it on a lift and removing some plastic covere underneath. I just put one of those straw like things on the spray nozzle and sort of bend it around everything in the way to feel my way to where I want to direct the spray pattern. I also can`t belive you can`t replace a bad wastegate without rebuilding the entire turbo. Hope this helps.
Jerry Chapman snipped-for-privacy@aol.com