bighossf150 Posted January 21, 2014 Report Share Posted January 21, 2014 When you replaced the belt did you go with the stock size or shorter? Quote Used to have a loud truck 2009 Corvette Z06, H/C/I, 150 shot, g force tune, 730rwhp/690rwtq 2013 F-150 limited, MPT Tune, leveled on 35"s Link to comment Share on other sites More sharing options...
MECHMAN Posted January 21, 2014 Report Share Posted January 21, 2014 What type of belt did you you use with your install? and what length? Quote 1-888-MECHMAN www.Mechman.com [email protected] Link to comment Share on other sites More sharing options...
bdog Posted January 22, 2014 Author Report Share Posted January 22, 2014 It's s gates 6 rib 91" that's 1.5 shorter than stock . I installed the stock alt today and it changed nothing still the same issues . I am emailing with Matt from mechman he's helping me sort it out. I have a feeling the truck is doing something weird. Quote REP Link to comment Share on other sites More sharing options...
Brett84 Posted January 22, 2014 Report Share Posted January 22, 2014 Could it be that the truck is not fully " exciting" the alternator? Quote Link to comment Share on other sites More sharing options...
bdog Posted January 22, 2014 Author Report Share Posted January 22, 2014 How hard should it be to move the tensioner ? I can fully move it with 30 lbs of pressure on a regular 5/8ths socket wrench . Seems kind easy Quote REP Link to comment Share on other sites More sharing options...
MECHMAN Posted January 22, 2014 Report Share Posted January 22, 2014 Are you seeing a black powdery substance on the face of the alternator? Quote 1-888-MECHMAN www.Mechman.com [email protected] Link to comment Share on other sites More sharing options...
bdog Posted January 24, 2014 Author Report Share Posted January 24, 2014 there is some soot . greasy not powdery Quote REP Link to comment Share on other sites More sharing options...
MECHMAN Posted January 27, 2014 Report Share Posted January 27, 2014 That would be a sign of belt slip. Did you get a Premium quality 1/2 inch shorter belt for the install of your alternator? What condition is the tensioner how old ? Quote 1-888-MECHMAN www.Mechman.com [email protected] Link to comment Share on other sites More sharing options...
bdog Posted January 28, 2014 Author Report Share Posted January 28, 2014 yes got a new shorter belt the tensioner is old. i will replace it and get back to you Quote REP Link to comment Share on other sites More sharing options...
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