I have an Aristo swapped SC300... Initial startup with an AEM ems went fine car idled great... I pulled the car out of my garage to clean up and a few days later tried to start the car to pull it back in the garage... initially it turned over but no start... now it wont turn over just a single click every time the key is turned

items ive ruled out are:
battery (Autozone tested)
starter (Autozone tested)
starter relay (replaced no change)

anyone with any ideas would be greatly appreciated... Im really hoping I didnt lock this motor up how can i rule that out? thanks for any help with this

 

no ideas???

 

if youre getting click no crank verify terminals/ cable and grounds to start at least. also is the starter engaging if you hook it up directly to the 12v source?

 

check to see if the battery is fully charged, if it started the first time i dont see why it wouldnt the second unless u left something on and drained the battery

 

ok the the manual says starter relay is supposed to have continuity between pins 1 and 2... I have my old one and a brand new one and neither have continuity between those pins... can anyone verify if that is accurate info in the manual?

 

My car did this at startup also, my issue was where the negative cable grounds to the block. I had to remove the ground and wire brush where the ground makes contact.

 

from the dead... turned out to be a bad ground cable, not completely cut but enough to not allow proper amperage... FYI if anyone has similar issues

 

Were you getting spark even though the cable was that way?

 

not sure... wasnt my concern at the time just need to get the starter to spin first