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 Factory Supercharged 3.8 V6 Wont Boost?  

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caddylowrider
  • caddylowrider
  • Standard User
  • Member No.: 27,271
  • Joined: 27-June 05
  • Posts: 306
  • From: Gold Coast
Post #1 post 25th February 2009 - 01:07 AM
just wondering if anyone can help me with my car...its a 1998 vs caprice with a 3.8 factory supercharged v6 with a 10 psi pulley...now the problem is it wont boost, the car just drives like a normal v6 but now and then the boost comes on (once a week or so) just for a short squirt....is there anything i can modify to have boost constantly (actuator or omething of the sort)??? has anyone had the same shit happen to their car??

cheers
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iamhappy46
Post #2

Check the accessory belt tension is tight enough, common for them to slip with old belts

caddylowrider
Post #3

not too sure if its that...is there any solenoids or actuators that are in control of reguating the boost in any way...i think it could be something along the lines of that

iamhappy46
Post #4

There is a vacuum bypass valve but it is doubtful that is the problem.

caddylowrider
Post #5

its actually quite possible cause previous owner had troubles of the sort when he first bought it do you know in detail where the valve is and if theres any modification to override it to see if its the problem

iamhappy46
Post #6

The valve is next to the throttle body, black with a rod coming out of it and a vacuum line going into it smile.gif

nastazio_12
Post #7

got the same problem with mine. just got mine not long along and was getting 12psi and now it hits only just under 10. i still dont no wats wrong with mine. how do you test if your vaccun valve is fuckd???

jonskeonerism
Post #8

QUOTE(caddylowrider @ Feb 25 2009, 07:07 PM) [snapback]1283640769[/snapback]

just wondering if anyone can help me with my car...its a 1998 vs caprice with a 3.8 factory supercharged v6 with a 10 psi pulley...now the problem is it wont boost, the car just drives like a normal v6 but now and then the boost comes on (once a week or so) just for a short squirt....is there anything i can modify to have boost constantly (actuator or omething of the sort)??? has anyone had the same shit happen to their car??

cheers



tell troy to put a sr in it if he wants boost. . . . biggrin.gif is this yours or chenksys profile?

i pick up my new car tomorrow. . . check it out

https://www.boostcruising.com/forums/index....howtopic=329954


talk soon mate. . .

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