View Single Post
  #6 (permalink)  
Old 03-20-2009, 02:12 PM
zzmac's Avatar
zzmac zzmac is offline
CC Member
Visit my Photo Gallery

 
Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
Not Ranked     
Default

Quote:
Originally Posted by Blas View Post
Check the ground connections on the battery and on the frame back by the battery. Actuall check the cable ends too. 9 times out of 10 that is the problem.
There is also a ground connection up by the starter from the engine to the chassis.
A quick test when the car won't start is to just take a jumper cable and connect one side to the "-" side of the battery and the other to the chassie somewhere...If the car then starts you have a bad ground somewhere..
To quickly check you charging:
Assuming you still have the firewall mounted starter solenoid installed, Take your volt meter and check the voltage on the right side (drivers side in USA) of the solenoid. (It's always HOT) while the car is running, should be around 13.8 volts.
Update:
Just checked the solenoid while car's running and it appears to be right around 14. Check.
Put multimeter on battery while car's running and appears to be right around 14. Check.
Put multimeter on battery with car shut off and it appears to be at 11. (I originally thought the increments on my meter were in "2s", and thought it read 12).

So does that leave me at potentially bad battery or ground?

I tried checking the quick test for the ground like you suggested and the car wouldn't start but I'm not sure if I hooked up the jumpers correctly (duh). I connected the - & + on the cobra and on my other car I hooked up the - and put the + jumper on the frame. If that was the right way, does that now point to a bad battery?

Thanks for your help, it's much appreciated!
Reply With Quote