First, I want to say thanks for all the help you all have provided via a little thing called “search”.
First, a little history on my 1993 LS400. A fellow employee gave me the car 3 weeks ago after it sat in his driveway for two years. He said it suddenly starting running rough like it was only running on 4 cylinders. He said he had replaced the plugs, wires, fuel filter and cleaned the injectors. His mechanic told him it might be the timing belt. After hearing how much it would cost he just bought a new Avalon.
I took the car…did a few internet searches and bought a coil. It now felt like an 8 cylinder, but it still had a miss in the idle and the smell of gas at the tailpipe. I checked the plugs they looked good. Wires appeared new. I replaced the other coil and the ECT sensor (it was a freebie, so I figured, WTH). The car ran lot better but still had the same problems. I finally pulled the rotors and found one was cracked in 2 places. Replaced both caps and rotors…Great power after the off idle stumble but, NO CHANGE in sitting idle quality!
My question is…
So…Where do I go from here?
I probably should have cleaned the IAC and the Throttle Body when I tore it down on one of the previous times. Guess I should have read more…Is there anything I am missing topside.
For an (almost) free LEXUS with 127,430 miles on it I think it is worth a HARD LOOK. The interior and the exterior are in good shape. It has the LS400 dash flicker but you guys have already told me how to fix that. The original timing belt was replaced at 76,000 miles. The air suspension was replaced at 115K. Any help would be appreciated. Thanks again.