hey i tried starting my new engine today, it was cranking but wouldn't start and this was with my dad's tundra jump starting it. so then i just switched my battery with his and it blew a 10 amp fuse under the dash so i changed it and now i just get a click and it loses power. could it be my main relay? im stuck right now i need this car running

 

check grounds. on thermostat, engine and tranny. power cables too.

 

they're all fine. could the battery from the truck be to powerful and blew more than just a fuse

 

no all batterys are 12 volt. unless you crossed the terminals and blew some **** up.

 

but the cold cranking amps are different. it blew the main relay/starter solenoid/ecu/icu fuse

 

so could it be anything else, like the main relay

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by (760)doogie &raquo;</TD></TR><TR><TD CLASS="quote">so could it be anything else, like the main relay</TD></TR></TABLE>

main relay could be bad. try another one. did you check for spark?

 

spark where?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by (760)doogie &raquo;</TD></TR><TR><TD CLASS="quote">spark where?</TD></TR></TABLE>

your sparkplug wire.. take it out and point it at something thats grounded. if a spark shoots out when you crank it over then you have spark. if not then you have a problem with either the dizzy or the main relay or some ignition related problem.

 

i doubt there is because right when i turn the key to start the car , it makes a click and then everything turns off. im going to check my starter to see if that still works by connecting the power and the terminal with the wires, not the ground. how can i know if the main relay is toasted

 

Bad Ground is my guess

 

you would think, ill keep looking maybe some ground came loose under the dash but it doesn't make any sense because all i did was change the battery