my car has always dropped volts when im sitting there.. almost to the point where the car dies.. and as soon as i rev it up it jumps right back up to where its supposed to be.. i replaced alternator..(cheap one) and battery and it still does it but not as bad or as often.. its a big problem when the electric fan cuts on.. huge decrease in volts and it just constantly drops even goin 60 65 mph... but i can push in clutch and rev it real fast and it jumps up again to the right spot.. any known causes out there? :dunno:
Charging problem
- Thread starter PEDs94GT
- Start date
AaRoN
King Post Whore
Do you have UDP's?
sonofabitch! i forgot all about it... i was driving one night at like 2 am and it died goin about 60 MPH and just died so i had to whip it into a parking lot without anythng ...... and i left it there overnight and my dad picked me up and took my back home.. and while i was at work he changed out alts and i forgot to tell him to take that UDP off the alt!!!!!! dammit! so thats my prob im guessing... sooo i need to buy a new set of UDPs and it should b fine right? god im a dumbass!!!
AaRoN
King Post Whore
As long as it's not stilling dying at 60mph then it's most likely the UDP's.
AaRoN
King Post Whore
That doesn't sound like a UDP charging issue. :dunno:
You said you replaced the alt. with a "cheapo". That could be the culprit.
You said you replaced the alt. with a "cheapo". That could be the culprit.
AaRoN
King Post Whore
Take your car to Autozone or AAP and have the alt. tested first before you go replacing parts.
CC'S95GT
Post Whore
UDP's make the alt spin slower sooo that would only be a prob at idle not at hwy speeds does the volts drop wheh the car is cold or after it comes up to temp If it only happens when the fan comes on that could be the culprit
wayne94mustang
Active Member
- Joined
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i like to run the stock alt pulley since its smaller it spins the alt faster and helped out my charging problem
The fact that you have a stock sized pulley when the rest are UDP is not an issue. It is spinning faster than if the UDP was switched to it.
I agree on the possible defective unit theory. New doesn't mean good.
Good luck.
Steve
I agree on the possible defective unit theory. New doesn't mean good.
Good luck.
Steve
im not exactly sure how tight the belt is supposed to be.. but i do see like a black dust built up on the front of the alt... not good i suspect... and yes the volts only drop when the car is up to temp and the fan kicks on... i had a problem with the fan not cutting on and my car was fine volt wise.. but then it got warm outside and i jiggled the fan wire harness around and it cut on and thats when the probs started again.. i cant run AC because that too drops volts like a siv... so whats the prob? bad alt.. bad fan.. loose connection.. please help.. im trying to save money to get wheels and tires and im tired of chasing this prob.. this is the 3rd alt.. all the others died as well... :crying:
AaRoN
King Post Whore
PEDs94GT said:
That sounds like a short somewhere in the fan or harness.
CC'S95GT
Post Whore
pull the connector off the fan harness do the ends look chared or smell like burnt insulation spin the fan by hand (engine off and cold of course) is it smooth or notchy notchy is bad bearings when the fan kicks on the rpm should droop briefly and pop right back up my fan kicks on when the needle is in the r/m range
CC'S95GT
Post Whore
status please
sry its taken so long for me to get on.. fam issues.. umm i took it and battery and alt were fine.. charged great the guy said.. when the car is cool.. i can turn lights on.. no problems.. but when car is warmer and fan cuts on.. thats when my problems begin.. im thinking its just the connection at the plug...
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