turbo wastegate soleniod help!

[matt98eclipse]

Last night me and a friend were takin apart the stock intercooler pipes and cleaning the intake filter on my 91 gsx. While we were putting the intake filter back in I had broke a vacum nipple of the turbocharger wastegate soleniod! Its a little sensor that has two vacum nipples of it. One vacum line goes the air filter and the other vacum line goes to the turbo and wastegate! I need help what does this do? and is there any place i can buy another one or can I just bypass it??? please help guys

 

[shinzon]

You can bypass it, however, you will then only be running 7 or 8 lbs of boost. The only solution is to buy another from the dealer or ebay. Alternatively, you can buy an after market boost controller for roughly the same price and use it to set boost at the stock level.

 

[matt98eclipse]

My check engine light came on with one of the vac lines off! Will my check engine light go back off it I just bypass it? I aslo have a manual boost congtroller right now.

 

[shinzon]

My check engine light came on with one of the vac lines off! Will my check engine light go back off it I just bypass it? I aslo have a manual boost controller right now.

It shouldn't care if the vacuum hoses are connected or not. The check engine light shouldn't trigger unless you damaged the electrical connection as well as breaking off the air nipple. Reset the ECU and see if it returns. What code is causing the CEL?

Hook your boost controller up in place of the solenoid (if you have it 'T'ed off the BOV line).

 

[matt98eclipse]

I haven't really check to see (kinda dark out last night) I will reset the ecu and see it it still comes up!

What is the purpose of the soleniod?

 

[shinzon]

What is the purpose of the soleniod?

Short answer: Its a boost controller. Long answer:

Wastegate solenoid fully explained:

The boost solenoid acts as a bleeder on the control pressure sent to the wastegate system. When this solenoid is open, the wastegate system "sees" less pressure in the system and doesn't open the wastegate as much as it would if the solenoid was closed. This causes more air to flow past the turbine wheel, which in turn compresses air at a faster rate, and thusly raises the boost pressure in the system.

Mitsubishi designed the wastegate actuator system so that on a totally stock car, boost pressure is about 7 psi. They added the bleeder to the system so that the boost pressure would be raised to 11 psi.

The normal operation of the ECU is to allow the car to run at the full 11 psi. However, when the ECU encounters severe knock for a long time (a possible indication of low-grade fuel), it will close the boost solenoid, chopping boost down to 7psi. This will give the engine a little bit of protection against severe knocking, as high boost simply aggravates that problem.

 

[95TalonOwner]

Messing with the BCS on any 1g will NOT cause a CEL. Your CEL is on for a different reason.

 

[matt98eclipse]

Missing the BSC will cause a check engine light on because after i hooked it back up with a new one!! The check engine light came back off!! I took it apart yesturday and fixed the BSC with a new one! The car runs good now other then it sounds like it has a little miss (It pops a little) Hopefully due to dad spark plugors! The car definetly needs a tune up!