I just recently bought a 98 Eclipse GS with a 420a engine with automatic transmission with 156,000 miles. I was curious to know what are some of the common problems I should expect to find on a 420a engine
The Eclipses are alright. I've owned two of that generation. They seem to be fairly reliable, but they are slow and boring. You won't want to install a turbo on the non-turbo model. The engines are completely different, and the cost of turboing the 420a just isn't worth it. If you want a turbo model, buy a turbo model. Going from the Sentra to an Eclipse isn't an upgrade. They were both low end commuter cars.