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not enough boost

0

07gpgt

New member
I have an 07 gt just had to replace the water pump and belts along with tires and rotors. Ever since then (as I can remember) Im not getting even half of the boost out of it judging by the in dash boost gauge and its way slower now. I dont know what could have caused that. supercharger oil hasnt been changed since about 65k (I have 87 on it now), air filter seems clean. Anyone who could help I would appreciate it.
 


If your boosted you dont have a GT unless you did a top swap. But it sounds like a vacuum leak. I'd go through your lines and inspect them. Especially under the S/C nose drive. Here is a diagram. Pay no attention to the circle..it was for a boost gauge thread.
vacuum-1.jpg
 


check your plugs and wires, hows other routine maintenance looking? these types of things can cause power loss. less boost doesnt always mean less power with a supercharged engine.
 
is it possible you routed the s/c belt wrong? it may look good, but i did it before to where it wasn't tight enough and slipped when engine reved. dnt ask how i managed it, but it can be done. lol
 


yeah I'll have to check the belt. ill prob take it to the dealer for the other stuff. my maintenance could be behind I know i'm prob overdue for plugs and i'm pretty sure i need to change the supercharger oil. thanks guys
 
id recheck your belt. and check for a vaccum leak chances are one, or both, of these is/are your problem.
 
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