kingkong Posted August 22, 2012 Report Share Posted August 22, 2012 I purchased my 2010 GT500 used. (4,000 miles). I has the following upgrades as far as performance: from american racing: H-pipe headers mac mufflers also Shelby heat exchager and VPM pulley for the supercharger. here is my issue: I don't really hear the supercharger whine and the PSI guage doest move even when i punch it. any help would be appreciated. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted August 22, 2012 Report Share Posted August 22, 2012 I purchased my 2010 GT500 used. (4,000 miles). I has the following upgrades as far as performance: from american racing: H-pipe headers mac mufflers also Shelby heat exchager and VPM pulley for the supercharger. here is my issue: I don't really hear the supercharger whine and the PSI guage doest move even when i punch it. any help would be appreciated. Punch it and hold it to redline before you shift. If you have time to watch your boost gauge, it's not getting boost! I don't need my boost gauge to tell me when it hits...I just know from my head being pulled into the back seat. Phill Link to comment Share on other sites More sharing options...
Rev Dennis Posted August 22, 2012 Report Share Posted August 22, 2012 When the boost hits you smile. That's all I know. Link to comment Share on other sites More sharing options...
Nitro Posted August 22, 2012 Report Share Posted August 22, 2012 Sounds like bypass valve is stuck open. Check vacuum lines to bypass valve. It's the vacuum module attached to the supercharger. Link to comment Share on other sites More sharing options...
ingram4868 Posted August 22, 2012 Report Share Posted August 22, 2012 Like Nitro my first check would be the vacuum lines. There is very little that can go wrong with SC itself. Did this happen right after installing the smaller pulley and tune? Link to comment Share on other sites More sharing options...
kingkong Posted August 22, 2012 Author Report Share Posted August 22, 2012 i purchased the vehicle with the stuff installed already. Link to comment Share on other sites More sharing options...
Torch40 Posted August 22, 2012 Report Share Posted August 22, 2012 I would find somebody local who knows his stuff so he can fix your stuff. NOT A DEALER Link to comment Share on other sites More sharing options...
07SGT Posted August 23, 2012 Report Share Posted August 23, 2012 Hate to point to the obvious but is the belt on the sc? Or has it broken? If the belt is absent there would be no whine or boost. Link to comment Share on other sites More sharing options...
E.Marquez Posted August 23, 2012 Report Share Posted August 23, 2012 As others have suggested, check the bypass valve vac lines and movement of the actuator It's that part in the lower left of this pic. and another shot. As well as,, suggested,,, the BELT itself.. present, not slipping look for lots of black dust on the pulleys and idler which may indicate slippage. look at the belt itself for signs of slippage. Listen for signs of belt slippage, like chirping at start up, or when you step on the gas. Link to comment Share on other sites More sharing options...
kingkong Posted August 23, 2012 Author Report Share Posted August 23, 2012 thank you all i'll check it out... I did reline it last night and the boost guage does work. like somebody else pointed earlier it kind a hard looking the guage when u punch it that hard. Link to comment Share on other sites More sharing options...
Don Johnston Posted August 24, 2012 Report Share Posted August 24, 2012 It's not what you see or hear, it is what you feel at the bottom of your seat that will let you know if it is working! Link to comment Share on other sites More sharing options...
07gt500conv Posted August 24, 2012 Report Share Posted August 24, 2012 +1000 on the feel Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted August 24, 2012 Report Share Posted August 24, 2012 It's not what you see or hear, it is what you feel at the bottom of your seat that will let you know if it is working! Yeah, if it's brown, slippery and it stinks...You're getting boost! Phill Link to comment Share on other sites More sharing options...
ingram4868 Posted August 24, 2012 Report Share Posted August 24, 2012 Yeah, if it's brown, slippery and it stinks...You're getting boost! Phill Your so bad Link to comment Share on other sites More sharing options...
sicilianjg Posted August 24, 2012 Report Share Posted August 24, 2012 I have a 2007 Shelby GT500 that I bought in 2006 new and in less then a year my boost guage went. Ford had to replace the super charger because its built into the super charger. That's the only way they can fix it, since it's attached to the super charger as one unit! GOOD LUCK! Joe Link to comment Share on other sites More sharing options...
ingram4868 Posted August 24, 2012 Report Share Posted August 24, 2012 Having to replace the entire SC because the gauge goes out was really poor engineering. Link to comment Share on other sites More sharing options...
E.Marquez Posted August 24, 2012 Report Share Posted August 24, 2012 I have a 2007 Shelby GT500 that I bought in 2006 new and in less then a year my boost guage went. Ford had to replace the super charger because its built into the super charger. That's the only way they can fix it, since it's attached to the super charger as one unit! GOOD LUCK! Joe ???/ Huh? Think there was some miscommunication going on between you and the dealer, or some shenanigans with that dealer. The boost gauge measures the amount of engine boost provided by the supercharger in pounds per square inch (PSI). The instrument cluster receives the boost gauge data from the powertrain control module (PCM) over the high speed controller area Indicator network (CAN) communication bus lines. The Super charger in no way had to be replaced if the boost gauge was malfunctioning. Link to comment Share on other sites More sharing options...
kingkong Posted August 28, 2012 Author Report Share Posted August 28, 2012 I have a 2007 Shelby GT500 that I bought in 2006 new and in less then a year my boost guage went. Ford had to replace the super charger because its built into the super charger. That's the only way they can fix it, since it's attached to the super charger as one unit! GOOD LUCK! Joe well my is a 2010 so lets hope they fix that issue. Link to comment Share on other sites More sharing options...
ingram4868 Posted August 28, 2012 Report Share Posted August 28, 2012 Have you taken the car in yet? Link to comment Share on other sites More sharing options...
kingkong Posted August 30, 2012 Author Report Share Posted August 30, 2012 Have you taken the car in yet? set a appointment for this weekend so i'll what they say. Link to comment Share on other sites More sharing options...
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