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No Boost

G

GreenGTP91

New member
I Got A 98 GTP and It's Running Good But it Ain't Throwing Boost my Mechanical said it my be the sc bypass solenoid but not sure and plus I can't find that part in any store Wat can I do? Or where can I find it?
 


So....it's running "good" like no difference in performance? Just not showing boost on your DIC?

There is no bypass "soleniod", it is a vacuum pod and it's on the side of the supercharger facing you, Its black and has a little lever attached to a butterfly valve under the supercharger.I would check all your vacuum lines going to it and look for leaks.

Maybe consider (at least temporarily) hooking up a mechanical boost gauge. You can get them at Autozone for under $20.
 
Actually there is a Boost solenoid. It's Located under the BBV. It's a small black rectangular box. Checked to see if it's connected. Also unplug the lower hose that connects to it and see if you car shows boost.
 
Hold the lever down on the Boost Bypass Valve, have someone sitting in the car give it throttle and watch the boost. If it fills up, replace the BBV.
 


We had already done that and it just reads all the boost up so I'm guessing its the bypass solenoid but I can't find part in any autopart store
 
Bluemagic said:
Actually there is a Boost solenoid. It's Located under the BBV. It's a small black rectangular box. Checked to see if it's connected. Also unplug the lower hose that connects to it and see if you car shows boost.
Click to expand...

Well, shows what I know. Ya learn something every day. Thanks!
 
i had the same problem rockauto.com has them for $30 i believe or you could just run without it... ive been running no boost control solenoid (little black rectangular box) for over 30k and had no problems... just run the line from your vacuum tree on the sc to the top port on bbv and the bottom port to open air or your intake somewheres...
 


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