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#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
I purchased a 2013 GT500 new out of state and drove it 1600mi. home. Varied the rpm like the manual advised, drove under 4k RPM first 200mi. Never used LC once. (SVT PKG + TRACK PACK) Ok, history out of the way - I hadn't noticed before but I do now, the car sounds flawless when cold and all the way up to operating temps. Just "after" it gets up to temp it starts this funny whine/moan sound between 900-3500 rpm. Most noticeably during deceleration and sounds like it is definitely front of the car. "Rrreeeeeeeerrrrr" It goes with the RPM of the motor, in gear or out of gear makes no difference so not a transmission issue. The noise gets louder the hotter the motor gets. There is one interesting bit of info, it seems that the noise is much less once you are stopped or just about stopped. In other words you can take it out of gear and be rolling at say 8 mph and rev it a little and it'd loud, around 1mph or stopped and rev it and a 75% reduction in the noise. You can also park the car for 5 minutes just after driving for hours and it will go away then once heat gets back to whatever it is the sound returns. I have an audio clip that I may upload to youtube later. No noticeable power difference so just wondering, is this just how the 13's sound? If this is normal then great, i'll just accept that and move on but it just sounds wrong. Taken it in twice now, they replaced the usual suspects - two pulleys, and the alternator, zero change. Tech said that the SVT Hotline told them "Yeah some of the trinity motors just have that 'zipper' sound from 1-3k, it'll go away over time". Sorry but WTF does zipper sound mean? And after 2350mi it's still doing it. Anyone else experience this? Thanks in advance for any insight into this issue. I simply love this car to death and it sucks when something like this messes with the experience.
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!