a scanner won't be much help if you lose your power.
Yes, I would take a good look at your battery connection. Even if the terminals look good you may have a poor connection between the terminals and the cable clamps. Don't use a scanner use a DVOM, voltage meter or a test light. Next time you don't have any power inside the car use the meter or test light and check between the center of the battery terminal and where the cable connects to the vehicle. You're looking for almost no voltage reading means you have a good connection or battery voltage meaning that you don't have a connection through the clamp. If you aren't familiar with checking voltage drop it may sound strange that reading battery voltage is a bad sign but you are not trying to find battery voltage, you are looking for the voltage drop in your cables. both ends of your cable should have the same voltage. if you have battery voltage between the battery post at one end of the cable and the other end of the cable that means the circuit is open.
If the cable connections check out to be ok you should verify that you have good ground connections to the body and the motor. If that checks out follow your power to the under hood fuse box
Car sometimes won't start, but battery is fine?
Re: Car sometimes won't start, but battery is fine?
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
Re: Car sometimes won't start, but battery is fine?
this was an answer to a post about a loss of battery power that is no longer available
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
alternator
battery charging reading is 16 volts is it overcharging and what can i do about it
Re: alternator
yes it is overcharging. have your charging system checked. make sure your gauge is not off. charging voltage for American cars and trucks should be from 13.8 to 14.2 with a good battery.
poor connections to power or ground could cause a charging problem. a voltage regulator could be a problem. depending on the vehicle the regulator could be in the alternator, outside the alternator or in the power control module.
poor connections to power or ground could cause a charging problem. a voltage regulator could be a problem. depending on the vehicle the regulator could be in the alternator, outside the alternator or in the power control module.
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
-
- Similar Topics
- Replies
- Views
- Last post
-
- 2 Replies
- 14510 Views
-
Last post by rtlewis
Sun Jun 14, 2015 8:51 am
-
- 5 Replies
- 14436 Views
-
Last post by peterr991
Tue Jun 29, 2021 12:07 pm
-
- 1 Replies
- 9571 Views
-
Last post by carriedi
Fri Oct 15, 2021 6:47 am
-
- 1 Replies
- 957 Views
-
Last post by carriedi
Sat Feb 03, 2024 5:08 pm
-
- 3 Replies
- 18661 Views
-
Last post by carriedi
Tue Feb 03, 2015 11:12 am