My 93 400E required a smog test. It failed, so guess what the first thing we needed is a new wiring harness. ($1500.00 thank you, next!) Then it just barely passed the smog test here in California.
Now I've noticed the car misfires when hot and won't start when warmed up. I can see the plug wire arcing to the engine in the front so I hope that will fix the misfiring/lack of power.
Looking at this site I am hopeful that a new fuel pressure regulator will fix the warm starting problem. I may have needed a wiring harness, but I think the plug wire problem is the real culprit.
After the wiring harness set-back, I'm hoping that I can fix the plug wires and install a new pressure regulator.
Is there anything I should watch-out for when I tackle these tasks?
The car has 180,000 miles and the engine is "solid"
Thanks in advance for any advice.