Apologies reviving this dead forum 14 years later. Seems like och never found a solution, wonder if he's still got the car :D
Just wanted to add since i've finally found my solution after years. I've done basically everything och has done and have the same problems.
I recently swapped igniters...
I bought a 94 LS400 a month or two ago. Was running well besides weirdly high fuel consumption (around 18l/100) More recently my car has been cold starting fine. But the revs don’t drop from 1400 ish. They stay at 1400.
The car also feels very underpowered from a standstill so I suspected the...