Thread: Dead Electrical
View Single Post
  #25   Report Post  
Posted to sci.electronics.repair
Snuffy \Hub Cap\ McKinney Snuffy \Hub Cap\ McKinney is offline
external usenet poster
 
Posts: 461
Default Dead Electrical

"Snuffy "Hub Cap" McKinney" wrote in message ...
On Tue, 05 Apr 2016 17:51:18 -0500, amdx wrote:

Just to expound on the key off and on. If indeed the solenoid pulls
in, THEN is when you need to find the fault, current needs to flow to
find to find the bad connection. If you have 0.06 ohms of resistance in
a battery/starter circuit and the starter tries to draw 200 amps, there
is 12 volts dropped across your battery connection.*
You won't be able to measure 0.06 ohms.


Before and after cleaning all the connections in the starting circuit the voltage drop during starting is about the same - less than 3V.

I meant to add that all the connections were tight but several had various levels of corrosion. After cleaning the overall resistance from pos or neg battery post to starter or block block went from around 1.9 to 1.4 ohms. That's not enough to prevent starting, but I suspect that one of the connections was intermittent.