My wifes Grand Cherokee/ 1995.
It starts up just fine in the morning and
again five hours later..
Then after 30 minutes it will not start?????
Only if I boost it, then it starts just fine on it`s own.
Two days in a row...
I have switcked out batteries and the same thing today ?
Could it be the starter relay ????
Nitro429.

 

Have you checked the starter relay?

 

hi and ty..how the hell to I check that oh I,m nitro wifr my car etc.etc.
all the relyas have the same #s so we switched the ac to starter relays
with the same result..still no start? if boosted it startes fine

what do u think battery or relay?

 

How are the battery cables? If they are corroded this can be a problem.