Alternator Problem
#11
Batteries wear out. Unless you can do a true load test on it, you will never truely know.
But a weak battery will not cause the problem you first described.
But a weak battery will not cause the problem you first described.
#12
what could be the problem than. I just dont wanna replace it and than that is not the problem.
#13
I am chasing a similar problem to yours. But dont just start buying parts hoping to fix it.
It could be a computer issue too. I am still researching it myself.
I would have a load test done on the battery to see if it is bad. You may have 2 different problems going on.
It could be a computer issue too. I am still researching it myself.
I would have a load test done on the battery to see if it is bad. You may have 2 different problems going on.
#14
what i realize today was, if i try to accelerate quick my battery gauge drops to 11 or 12 when its changing gears other then that it shows 14.
#15
get it checked at your local auto parts they could put a ;load on your alternator and battery
#16
In an earlier post I explained that my alternator tests good. Still drops out above 4000 rpm.
But I do agree with getting his battery load tested to rule out a weak battery (Even though it wouldnt cause the alternator issues he is having.)
But I do agree with getting his battery load tested to rule out a weak battery (Even though it wouldnt cause the alternator issues he is having.)
#17
i am gonna remove the alternator and take it to autozone to get it test some times next week. im really busy with summer classes and work. my luck i bet my alternator and my battery need to be replaced or something bigger idk. i never had a easy solution for my problems in this truck. hopefully nothing serious.
#18
I lost sight of the original problem, yup. Ideally bring the alternator someplace where they could spin it up on the bench and test it. I think they'll find the regulator inside went bad and can't switch fast enough.
#19
im with you. the regulator is the problem. on a 2500mile trip to mexico in my buddies 2000 silverado we were maxing it out and asnytime going up a hill it would down shift to about 4500rpms and the gauge would drop to 11v and depending on the rpm i redlined it and it droped to 9 and battery light came on. we ended up geting stranded in michoacan, bad place to be stranded in mexico. took us 2 hours to find a regualtor and 1 hour for the mechanic to sauter it on being we didnt feel like spending $3000 pesos or $275 DOLARS ON A NEW ALT. ps MEXICO ELECTRONICS ARE 2X MORE THEN AMERICA. long story short the regulator was the problem. got a new alternator and it fixed it. also get a new battery while your at it or your guna be stuck someware also. being your running n amp i would get the Optima battery i have its 900cca and 1000a. mines costed $230 but i got ripped off i see them at autozone or O-Riley auto for around $160-$180, just remember to get the RED TOP. fits right in the blazer like a charm.. also comes with a 6 year warrenty and i believe a 2 year free replacment warrenty
Last edited by chaoticdopey; 06-27-2011 at 12:52 AM.
#20
My voltage gauge on my dash has been not telling me the truth for the last 2-3 years.
It will sometimes stay steady at 14 and drop down to 9 volts randomly on acceleration.
It worried me and drove me crazy. Not saying your dash gauge is like mine.
I wound up getting an inexpensive cigarette voltage reader(7-8 dollars) and watched it
and my gauge. Found out that my volt gauge on my dash was not telling the truth.
I would try this first. It gave me peace of mind to know that the alternator
and battery were really OK.
Never really found out why it jumps around. I just watch the voltage reader that I
put into the cigarette for the correct read.
Its a cheap little gismo that might help you diagnose your problem.
I am still using it 2 years later.
Mark
It will sometimes stay steady at 14 and drop down to 9 volts randomly on acceleration.
It worried me and drove me crazy. Not saying your dash gauge is like mine.
I wound up getting an inexpensive cigarette voltage reader(7-8 dollars) and watched it
and my gauge. Found out that my volt gauge on my dash was not telling the truth.
I would try this first. It gave me peace of mind to know that the alternator
and battery were really OK.
Never really found out why it jumps around. I just watch the voltage reader that I
put into the cigarette for the correct read.
Its a cheap little gismo that might help you diagnose your problem.
I am still using it 2 years later.
Mark