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What if your Lexus ls 400 1991 All the lights on dash board comes on and accelerates up and down while on parking by its self?
Wiki User
∙ 15y ago
I have a 92 with the same issue. The check engine, trac light and traction control lights were all on. Engine would rev up to about 3 grand while in park then slowly drop to the point of stalling then up again. This kept repeating itself. While driving the car would basically have no throttle at all then all of a sudden kick in for a second then do the same thing all over again. I tried the average mechanic route but was not successful. Go see the dealer. I had to suck it up on this one. Ended up being the sub throttle positioning sensor and one of the O2 sensors. Cost me close to a grand for the diagnosis/parts and installation of each. Yikes
Wiki User
∙ 15y ago
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