Question about 1991 Lexus LS 400

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My LS 400 is parked. I was at a drive thru and it started idling low, then wouldn't excellerate. This happened about a week ago. I put about 2 quarts of transmission fluid in it. The problem went away, but now it's back. I thought It may have been bad gas, but I don't think bad gas would cause it not to accelerate. I opened the hood this time and seen a mist of smoke coming up from the engine on the firewall side just lower than the dip stick. I'm trying to systamaticly solve this problem. Should I re do the seals and new fluid on the transmission? Could this be a shift solenoid?

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  • melvin_popla Sep 10, 2010

    Fixed it. There was nothing wrong with the transmission. To make a long story short, we couldn't get a code from the OBD so I had it towed to the Toyota "stealership". Paid the diagnostic fee ($103.00) and they said they had a misfire code. They recommended it just needed a basic tune up. New wires, plugs, distributor caps and rotors (The V8 has 2). They said they would do it for 850.00! I politely declined and got it towed to a shop that lets you rent the bays. I paid 200 for parts and did it my self. Now she runs like a champ! I mean, at 80mph, she is still asking for more, but I'm not into speeding. ;-) This is my third month with the car, the previous owner could have took a little better care but i'm changing the oil this weekend. Oh yeah, when you are changing the plug wires, you get a great look at the timing belt, good time to check for cracks etc.



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My ls 400 just started doing the same thing, stays in a low gear, i havent got the answer yet, having it checked out, im thinking its the speed sensors, it has 2, but it did this before and it was a bad spark plug wire, when i find out i will let you know, im working on it now,

Posted on Sep 10, 2010


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