This is probably a dificult one to diagnoss, but has anyone had a similar condition occur?
I have a 96 LS 400 with 132,000 miles. very well maintained, new plugs at 95,000. All of sudden my car starts running rough and the check engine light comes on. This happened on start-up. Car seems to get a little better after a while but runs rough agian after re-starting. Check engine light stays on regardless.
Victor