alternator or something else?

Dennis · June 9th, 2008, 08:07 PM

so im wondering if my problem is the alt or something else my car has a horrible habbit of wanting to die once in a while becoming more and more prevelent. this doesnt happen slowly it only happens when im sitting idle at a light or something it looks like someone just cut the battery cable and put it back the vol gauge drops off car almost dies and it comes back to normal. im thinking if it was the alternator it would slowly die over time not just out of nowhere volts drop off car almost die and comes back. this happens most of the time while the a/c is on and even more so in situations like today when it was raining and hot so the headlights a/c wipers and radio was on.

TheUNZippee! · June 9th, 2008, 10:45 PM

Load test the battery.

Have the alternator tested.

Check the connections at the battery, the alternator, and the starter.

To me, this sounds like a shitty connection at the starter. Make sure you disconnect the positive terminal at the battery before messing with the starter connections, as a wrench jammed between a power cable on the starter and the frame or engine block is a very bad thing.

Fish · June 9th, 2008, 10:51 PM

Autozone can check those For you. Maybe a possible intermitten short.

Dennis · June 9th, 2008, 10:53 PM

cool ill run to autozone this weekend i know the battery is less then a year old i had to put a new one in when the old one kicked the bucket. on a side note the fucking car dies everytime i put it in neutral that aint right

Fish · June 9th, 2008, 10:55 PM

When it does idle is it rough? not sure if they have a check for it but maybe an EGR valve? Not sure about that but worth checking.

TheUNZippee! · June 9th, 2008, 10:56 PM

Also consider checking the IAC unit. It may need cleaing or replacing.

Dennis · June 9th, 2008, 10:58 PM

it only idles rough when i am sitting at a stoplight with the car in gear breaks on and mainly when the a/c is running or multiple electrical components like lights wippers radio at the same time like today and i used to be able to kick it in neutral and it would stop well now when i do it dies

Dennis · June 9th, 2008, 11:00 PM

Originally Posted by TheUNZippee!

Also consider checking the IAC unit. It may need cleaing or replacing.

did that its clean no clue how to check if its bad or not

Fish · June 9th, 2008, 11:01 PM

Well I think you have a starting point for somthings to check. Also make sure the battery terminals do not have a lot of corrosion on them.

Dennis · June 9th, 2008, 11:09 PM

yea ill check all things mentioned thanks guys

Fish · June 12th, 2008, 10:44 AM

Dennis did you get this checked out yet?

Dennis · June 13th, 2008, 02:21 AM

nope not yet dont have time till the weekend due to work

June 9th, 2008, 10:51 PM	#3
Fish Regular 05 MustangGT 422whp417rwt 12.5@109 Join Date: Apr 2007 Location: MA Posts: 459 iTrader: 4 reviews	Autozone can check those For you. Maybe a possible intermitten short. __________________ M90 Roush with 2.49 pulley,Flowmasters axel back,Deep Dish Bullitt Wheel (18x9)Front (18x10), BFG KDWII tires,3.73 gears, BMR LCA, Roush Front bumper with chin spoiler, Cervini M1 hood scoop, power slot rotors, SLP line lock

June 9th, 2008, 10:55 PM	#5
Fish Regular 05 MustangGT 422whp417rwt 12.5@109 Join Date: Apr 2007 Location: MA Posts: 459 iTrader: 4 reviews	When it does idle is it rough? not sure if they have a check for it but maybe an EGR valve? Not sure about that but worth checking. __________________ M90 Roush with 2.49 pulley,Flowmasters axel back,Deep Dish Bullitt Wheel (18x9)Front (18x10), BFG KDWII tires,3.73 gears, BMR LCA, Roush Front bumper with chin spoiler, Cervini M1 hood scoop, power slot rotors, SLP line lock

June 9th, 2008, 11:01 PM	#9
Fish Regular 05 MustangGT 422whp417rwt 12.5@109 Join Date: Apr 2007 Location: MA Posts: 459 iTrader: 4 reviews	Well I think you have a starting point for somthings to check. Also make sure the battery terminals do not have a lot of corrosion on them. __________________ M90 Roush with 2.49 pulley,Flowmasters axel back,Deep Dish Bullitt Wheel (18x9)Front (18x10), BFG KDWII tires,3.73 gears, BMR LCA, Roush Front bumper with chin spoiler, Cervini M1 hood scoop, power slot rotors, SLP line lock

June 12th, 2008, 10:44 AM	#11
Fish Regular 05 MustangGT 422whp417rwt 12.5@109 Join Date: Apr 2007 Location: MA Posts: 459 iTrader: 4 reviews	Dennis did you get this checked out yet? __________________ M90 Roush with 2.49 pulley,Flowmasters axel back,Deep Dish Bullitt Wheel (18x9)Front (18x10), BFG KDWII tires,3.73 gears, BMR LCA, Roush Front bumper with chin spoiler, Cervini M1 hood scoop, power slot rotors, SLP line lock

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