Brand new to the list and looking for advice. My 89 SE has been running poor and I located the main problem being the wire harnesses that go to the injectors. If you touch them or bend them the car will either shake like crazy and stumble or will smooth out. I took some CRC electrical cleaner and sprayed all of the harnesses and used a small flathead screwdriver to scrape the contacts. I taped up the ends and put it all back but I still have evidence of the problem.

Can the ends of the harnesses be burchased and soldered into place? Any suggestions would be greatly appreciated. I have owned the car since 89 and have 155k miles on it! Any other reccomendations for general maintenace besides a tuneup are welcome!

Thanks in advance!
Steve