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eboost2 problem

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Old Aug 7, 2014 | 09:56 AM
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Default eboost2 problem

Im pretty sure it is something ive done, im not blaming the unit as of yet. I can hear the turbo spool and the bov so I know im in boost. The problem is the gauge isnt registering boost at all. I have the wastegate bottom port referenced to the compressor housing and the top port to eboost solenoid port #2. Port #1 is referenced to the brake boost (thinking of moving the to intake tract about 12" before throttle body since the gauge doesnt read vacuum). Port #3 is vented to atmosphere straight out the solenoid (no fitting or anything). I ran a solenoid check and get the 4 clicks. Boost and peak boost register 0.0. Just not exactly sure where my problem is. I had top and bottom wg ports to the brake booster and move the lower, no luck. Any help will be greatly appreciated!
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Old Aug 7, 2014 | 12:07 PM
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what is your wastegate spring, what is your SP1 and GP1 at?



you can test without the controller at all by running the turbo pressure direct to the lower wg port.
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Old Aug 7, 2014 | 01:26 PM
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you need to install the small line to the back of the guage, to the intake manifold. does it read vacuum?
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Old Aug 7, 2014 | 06:33 PM
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Im not exactly sure what my spring pressure is. To be honest I never took the wastegate apart. I will try to do that tomorrow. At first I set the settings to zero. Then I moved them to 10, then 15. I stayed the same. At first, I had the low port & solenoid port 1 to the manifold for the brake booster and top port directly to solenoid port 2.

Where did you reference the small port to on the intake manifold? Im not getting vacuum readings.
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Old Aug 7, 2014 | 07:20 PM
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Originally Posted by streetracingta
Im not exactly sure what my spring pressure is. To be honest I never took the wastegate apart. I will try to do that tomorrow. At first I set the settings to zero. Then I moved them to 10, then 15. I stayed the same. At first, I had the low port & solenoid port 1 to the manifold for the brake booster and top port directly to solenoid port 2.

Where did you reference the small port to on the intake manifold? Im not getting vacuum readings.
There's a small vacuum line coming off the actual eboost2 unit that needs to be hooked up as well.
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Old Aug 7, 2014 | 09:19 PM
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Originally Posted by 98Camarod
There's a small vacuum line coming off the actual eboost2 unit that needs to be hooked up as well.
Just so he knows what you are talking about.

Circled in red.
Attached Thumbnails eboost2 problem-eboost-rear.jpg  
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Old Aug 15, 2014 | 09:38 PM
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I appreciate the help. I saw the vacuum port before but didnt know thats what is was. I referenced the boost to the compressor for now and referenced the vacuum to the brake booster line. All problems have been solved. Thanks again!
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