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Showing results for tags 'alternator'.
#1 Ok, so this issue has perplexed me for over 3 years now. I picked up a rebuilt / salvage title 07 GT500 back in 2015. Everything is near perfect however when I wholeshot the car my guages, dash lights, ABS, and stereo power cycle. It's quite distracting and upsetting when it happens as it's usually when I'm trying to enjoy the power this beast has. I've taken it to the local speed shop who wants a ton of money to analyze the electronics and Dyno the car.. So I've physically checked the ground connections which seem ok (no multimeter testing though). considering it's an RPM triggered event I'm suspecting that it ISN'T a ground issue. I've disengage the ABS because when the power cycles it instantly turns back on the ABS creating problems. My suspicion is that the person who rebuilt the GT500 cheaped out on a replacement alternator and either installed a junk GT alternator (not GT500) or perhaps a defective one that maybe sends a surge at 2000 RPM. I just can't think of anything else that involves electronics and would be 2000 rpm sensitive. I sure would appreciate if an expert from this forum could assist as I'm completely lost. 3 years with the car and I can't take it over 2000 without fearing the unknown... Thank you in advance whoever you are who will be taking time out of your day to help me. Carl
Got my new Shelby ...(well new to me)...two weeks ago and got to drive the 20kms home.....was still smiling the next day. Went for a Sunday drive and ended up stranded on the side of the road. "Check Charging System" light came on then battery light ...then 10mins down the road all went down hill pretty fast and died completely...after reading any forum I can find seems pretty common so purchased brand new battery...new 200amp PA Alternator...installed all parts and worked great.(showed 14.6Volts...dropped to 13.5v constant after 90secs.. and putting out 90amps at idle...up to 130amp at 2500rpm). After turning off car and restarting after 3 mins...voltage reads 12.3v and drops 0.4v after 2mins and ammeter show 0amps...so alternator is not getting signal from pcm to turn on !!...however after turning it off and disconnecting the negative battery cable for 10mins...then reconnecting it and restarting...all is well again.(voltage lifts to 14.6v and drops back to steady 13.5 volts..Until you turn off car. Only way to get alternator running each time is to disconnect the battery terminal for 5-10mins...(which I assume is clearing the PCM memory)..makes for a very long trip every drive. Have take to a Auto electrician and he says there is a fault code P0****..something about a field generator..I just can't remember what he said....I have ordered a PCM code reader...(I'll update when I get the exact code) I'm over in Perth Australia....so no dealer here has any clue ??? Thanks in advance.
Does anyone have experience or suggestions regarding quality replacement alternators? Mine went south last week, and nearly left me stranded...ran a few miles on the battery and got me home. Now I'm looking for a quality replacement alternator that can meet my electrical needs, and might last a little bit longer than 11,000 miles. I have looked at PA Performance alternators as one option, but the warranty exclusions are frightful. I really hope to take the car on a road trip, and would spend the money now to have peace of mind that I won't get stuck somewhere along the way with a dead battery. Any thoughts would be helpful. Thanks!
Hey guys (and any gals), I have a 1971 Ford 302 in my 1968 Mustang (for background information), I have replaced ALL ignition components with MSD products. I have also put in a nice Retro-Sound stereo and LED tail lights along with upgraded headlights... my question IS: At idle, my battery voltage is 12.6v and with all lights on its 12.3v... is that too low? When I rev the engine above say 1,700RPM it comes up to 13v but at idle and in gear, its the 12.3v. I've had the battery tested, it holds charge. Should I replace the alternator with a higher output to compensate my MSD setup??? New Voltage regulator? Both? ANY input is requested and GREATLY appreciated!!!! -Thanks!