This is a follow up to my previous post. To re-cap, I noticed my cranking speed was gradually getting slower and slower. Since my battery was old I replaced it, but then had a no start. After doing Dan's check list, I cleaned the connection of + connection at the starter and it started up. Since then the cranking speed is still slow, and very slow if it sits for a couple days. Even when it is very slow it still starts. I am wondering about the grounds. What should I be checking, and where should the neg battery wire be connected on the engine. Would a bad ground cause a slow crank? Also, would a starter that is going bad gradually cause a slow crank? The starter only has about 35K miles on it but it is probably 9 to 10 years old. The car has 125K miles on it.
I followed the negative battery cable down and under the car to find that it was connected to one of the mounting bolts on the starter. The connection looked very corroded so I took it apart and sanded everything with emery cloth so it was back to bare metal. Put it back together and now the engine cranks over normally, like it used to do, before this issue.
I never realized how important the ground connections are.
Thank You. I am very happy to have my car back to normal.