alternator gremiln please help me out afternoon everyone figured i would post on here and see if anyone has an ideas. for the past year i have had an issue with my 02 civic ex EVERY TIME i connect the positive terminal from my alternator to either my battery + terminal or my fuse box its like the alternator kicks off. i can get 14-15 volts without hooking the main line to anything but my volt meter. i have pulled each and every fuse under the hood and connected the line to the battery each and every time and also to the fuse box every time i pulled a fuse to see if something was causing a drop in the fuse box but nothing seems to keep the alternator at voltage. voltage at yellow black is at 12 volts i disconnected green/white line at the harness to the alternator to stop the ecm from kicking off the alternator also disconnected the eld so in theory i should be running in high mode full output of the alternator. hell i have even put the green/white line to 12 volts to keep it as high as i can get it to keep the alternator running regardless and AS soon as i plug alternator output into the system it either shuts down the alternator or something causes the alternator to drop voltage. on a side note i have replaced all grounds and did voltage drops on all lines from alternator to battery battery to fuse fuse to starter on both positive and negative sides... i cant figures out what the hell is going on.. anyone got any ideas on what could be going on..thanks sorry for the long ass run on sentence English is not my forte. ok some more information... just now i went and took a set of jumpers and a second battery, with the car running alternator outputs not hooked to anything alternator showing 14-15 volts. took the jumpers hook to alternator chasis and alternator + terminal then plugged into second battery sitting on ground outside of car. alternatr jumps down to 13.-5-14 as susposed to.. its defenlty somthing on the car thats causing the issue any ideas guys?? im at a loss this car has been sitting for the last year because i did not want to mess with it anymore lol now im back at it. another note.. battery light acts as normal key in ignition acc setting lights up.. start car 1-2 seconds later light turns off but alternator is not charging |
Re: alternator gremiln please help me out is there any way at all that this could be the computer i am about to pay 125 tomorrow to get a used one flashed. to see if it does anything.. i feel like it cant be the computer because when everything is hooked up other than the main output of alternator it seems the alternator is kicked on and outputting 14-15 volts. |
Re: alternator gremiln please help me out
Originally Posted by bigdaddyclint
(Post 4751901)
is there any way at all that this could be the computer Did you try your jumper cable from the alternator output to the incar battery directly, skipping the power harness? Just wondering if you have significant damage to power wire that goes from battery to the starter and then to the alternator. |
Re: alternator gremiln please help me out
Originally Posted by Slumpertcivic
(Post 4751905)
No. Did you try your jumper cable from the alternator output to the incar battery directly, skipping the power harness? Just wondering if you have significant damage to power wire that goes from battery to the starter and then to the alternator. |
Re: alternator gremiln please help me out
Originally Posted by Slumpertcivic
(Post 4751905)
Just wondering if you have significant damage to power wire that goes from battery to the starter and then to the alternator. |
Re: alternator gremiln please help me out Everything you have told me so far points to a failing alternator. While your “test” battery on the ground initially seems valid, your not actually putting a electrical load on the alternator that way. Pull the alternator out and take it to a parts store that has a alternator tester. |
Re: alternator gremiln please help me out Or just take the car to the Zone and have them test the alternator with it in the car. They have a hand held tester that does that. |
Re: alternator gremiln please help me out
Originally Posted by Slumpertcivic
(Post 4751909)
Pull the alternator out and take it to a parts store that has a alternator tester. |
Re: alternator gremiln please help me out If your ruling out alternator itself as issue, it’s got clean grounds, engine to body ground is good, body to battery ground is good, battery is good, wires from battery to alternator are good then the only thing left is the electrical load is greater than alternator can provide. Not sure what the minimum amount of relays and fuses you need connected in the engine compartment box to run the car, but I defnately would start pulling out everything till the car stopped running, reinstall whatever causes it to stop and restart it and remove some more till it stops again till your left with absolute minimum. Heck I would bypass the starter with a jumper cable just so I can restart without leaving the battery area. Clearly, take good pictures before so you can put everything back leave green plug disconnected. If nothing changes, Call a exorcist ... |
Re: alternator gremiln please help me out go get an oem one from the junkyard |
Re: alternator gremiln please help me out so this morning i went and got the ecm changed and programmed, still no damn change in the charge.. after that i went over to orileys auto and had the alternator checked in the car. everything passed except the voltage regulator.. figures so i tell they guy ill be back in an hour so he can bench test it. pull the alternator and bring it back to them.. it passed the damn bench test 3 times in a row.. i argued with the guy for a sec to get my it replaced seeing as how it failed in car on the regulator. go home get the new one put in and damn thing STILL is messed up this is a total of 5 alternators now in the car.. i go back and do an in car test again battery is good starter is good and alternator fails voltage regulator test on a NEW alternator.. what gives guys why would the voltage regulator in the alternator keep failing its not putting out the 13.5-14 seems like its working a little just not to its full potential. |
Re: alternator gremiln please help me out Again, reads like something in your car is drawing way to much current, but not enough to pop a fuse. Pull the relays! |
Re: alternator gremiln please help me out Ohhh one more thing to quick check, try to start the car with the engine running, you want to hear the teeth of the starter grind.. If the starter is locked onto the flywheel, it will make energy as the engine spins it and that might really screw with charging.. ( I know starters don’t usually work in that manner but there might be enough contaminates to give some electrical pathway...) |
Re: alternator gremiln please help me out Hi, I’m having the exact same problem. Whenever I attach the wire to the regulator it cuts off any power going to my battery. Did you ever manage to find out what it was? Any help would be appreciated. |
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