- This topic has 5 replies, 5 voices, and was last updated 11 years, 10 months ago by .
-
Topic
-
I have a 2000 Ford Focus 2.0 DOHC with a manual transmission. When my engine is hot and at an idle. It likes to go from 800rpm to 300rpm for a second. I notice the dash lights dim on the dash. It does it every time after I come to a stop. I already did a tune up to my car. Today after that happened once. A light came on the dash and It was too fast for me to see. It was red so it was not a check engine light. I tried to do a vacuum leak test but I didn’t find anything. I am wondering if it could be the battery or the alternator. I haven’t had time to test starting and charging. This has been going on for a while and I would like it to stop.
If a light comes on the dash for a split second would it save in the ECU?
Also, please post any diagnostic tests that I could do.Thanks for reading and have a happy new year.
- You must be logged in to reply to this topic.