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Subject: "Surge / Intermittent boost" Previous topic | Next topic
dsm2gJul-18-05 05:47 AM
Member since Apr 10th 2002
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#8184, "Surge / Intermittent boost"


          

Has anyone faced this problem?
Feels like boost is surging and you feel torque pull then it will bog down back and forth between the two.
Replaced with new clutch already.
can't seem to diagnosis problem.
any response is greatly appreicated.

Stock 97 GST

  
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Replies to this topic
RE: Surge / Intermittent boost, ModeratoreclipzGST, Jul-18-05 05:50 AM, #1
RE: Surge / Intermittent boost, dsm2g, Jul-18-05 06:01 AM, #2
RE: Surge / Intermittent boost, L2RTSiAWD, Jul-18-05 06:30 AM, #3
      RE: Surge / Intermittent boost, TeamJeff_99gs, Jul-18-05 06:40 AM, #4
      RE: Surge / Intermittent boost, dsm2g, Jul-18-05 07:25 AM, #5
           RE: Surge / Intermittent boost, L2RTSiAWD, Jul-18-05 07:29 AM, #6
                RE: Surge / Intermittent boost, dsm2g, Jul-18-05 10:33 AM, #7
                     RE: Surge / Intermittent boost, ModeratoreclipzGST, Jul-18-05 09:53 PM, #8
                     RE: Surge / Intermittent boost, L2RTSiAWD, Jul-19-05 06:52 AM, #9
                          RE: Surge / Intermittent boost, dsm2g, Jul-19-05 07:35 AM, #10
      RE: Surge / Intermittent boost, ModeratoreclipzGST, Jul-18-05 07:24 AM, #11
RE: Surge / Intermittent boost, NHH223, Jul-19-05 04:48 PM, #12
RE: Surge / Intermittent boost, dsm2g, Jul-22-05 03:42 AM, #13

ModeratoreclipzGSTJul-18-05 05:50 AM
Old School 2GNTer
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#8185, "RE: Surge / Intermittent boost"
In response to Reply # 0



          

Are you really running 16psi on a 16G w 450's?


__________________________________________________________
-Tony <--- NOT asian.
'06 Wicked White EVO IX

Originally posted by Avenger
When I raise the BS flag ... it's a really big fucking flag and I raise it really fucking high too.



"Never whistle while your pissing." ~The illuminatus Trilogy

  
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dsm2gJul-18-05 06:01 AM
Member since Apr 10th 2002
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#8186, "RE: Surge / Intermittent boost"
In response to Reply # 0

          

actually not anymore.
I just changed my profile.
I had a 1999 gs w/ those mods.
I have a 1997 gst.
I had 625's in the end.
Ran real rich.

  
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L2RTSiAWDJul-18-05 06:30 AM
Member since Sep 30th 2003
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#8187, "RE: Surge / Intermittent boost"
In response to Reply # 2
 Jul-18-05 06:30 AM by L2RTSiAWD

          

I suck at using this board to see anyones mods.

What is your fuel setup?

  
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TeamJeff_99gsJul-18-05 06:40 AM
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#8188, "RE: Surge / Intermittent boost"
In response to Reply # 3



          

Originally posted by L2RTSiAWD
I suck at using this board to see anyones mods. What is your fuel setup?


That is because people just ask questions assuming we know what kind of car they drive and what their mods are.

  
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dsm2gJul-18-05 07:25 AM
Member since Apr 10th 2002
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#8189, "RE: Surge / Intermittent boost"
In response to Reply # 4

          

It is all stock.
Trying to figure out the problem before proceeding with any mods.
I am sorry for not mentioning that earlier.

  
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L2RTSiAWDJul-18-05 07:29 AM
Member since Sep 30th 2003
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#8190, "RE: Surge / Intermittent boost"
In response to Reply # 5

          

If you are all stock then you need to look at:

Plugs,wires, fuel filter, boost leak test. I'm not sure where a clutch falls into it.

How many miles on it?

I would at least get a real boost guage so you can see what's happening.

  
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dsm2gJul-18-05 10:33 AM
Member since Apr 10th 2002
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#8191, "RE: Surge / Intermittent boost"
In response to Reply # 6

          

Well I replaced the clutch thinking it was slipping.
Did a boost leak test. No leaks.
I have a auto meter 30psi gauge mounted to the pillar.
New plugs, wires, fuel filter and also replaced turbo last month
(all oem).
It has around 97000k miles.
So I have drop some money into it but no luck.
Has any have problems with wasgate gate soleniod (NOT THE MECHANICAL ONE THE ELECTRICAL COMPONENT)

Stock 97 GST

  
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ModeratoreclipzGSTJul-18-05 09:53 PM
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#8192, "RE: Surge / Intermittent boost"
In response to Reply # 7



          

Originally posted by dsm2g
Has any have problems with wasgate gate soleniod (NOT THE MECHANICAL ONE THE ELECTRICAL COMPONENT)

emoji


__________________________________________________________
-Tony <--- NOT asian.
'06 Wicked White EVO IX

Originally posted by Avenger
When I raise the BS flag ... it's a really big fucking flag and I raise it really fucking high too.



"Never whistle while your pissing." ~The illuminatus Trilogy

  
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L2RTSiAWDJul-19-05 06:52 AM
Member since Sep 30th 2003
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#8193, "RE: Surge / Intermittent boost"
In response to Reply # 7

          

Originally posted by dsm2g
Has any have problems with wasgate gate soleniod (NOT THE MECHANICAL ONE THE ELECTRICAL COMPONENT)



You mean the BCS. The turbos wastegate and the boost control solenoid are completely different.

If the BCS was broken it might trigger a CEL.

  
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dsm2gJul-19-05 07:35 AM
Member since Apr 10th 2002
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#8194, "RE: Surge / Intermittent boost"
In response to Reply # 9

          

If you look at a wiring diagram the description shows as an wastegate
solenoid.
Also look a vaccuum line chart. That component is in direct line with the wastegate acuator.

Stock 97 GST

  
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ModeratoreclipzGSTJul-18-05 07:24 AM
Old School 2GNTer
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#8195, "RE: Surge / Intermittent boost"
In response to Reply # 3



          

Originally posted by L2RTSiAWD
I suck at using this board to see anyones mods. What is your fuel setup?


I was going by what he had listed in his sig.
You guys need to help us out by listing any mods that would have to do with a specific problem.


__________________________________________________________
-Tony <--- NOT asian.
'06 Wicked White EVO IX

Originally posted by Avenger
When I raise the BS flag ... it's a really big fucking flag and I raise it really fucking high too.



"Never whistle while your pissing." ~The illuminatus Trilogy

  
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NHH223Jul-19-05 04:48 PM
Member since Apr 20th 2004
161 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#8196, "RE: Surge / Intermittent boost"
In response to Reply # 0



          

I had a loose intercooler pipe, the clamp wasn't tight enough. Especially on the lower plastic ones, it's really small space down there.

I would romp until 4500, then the thing would buck, jerk, and basically flip me off. Rechecked pipes and lines and then tightened down, and then she ran mint. Try the basics. I know a bad/ disconnected MAF sensor will let you boost until like 4000 rpms, then the thing will die due to the cluster-fuck its in.

-Nick

'95 Copper GS-T "Serena" Stage 3 CM Clutch w/alumin flywheel, Injen Intake, Apex'i I/C pipes + Twin Chamber BOV, Defi D-Series Boost + A/F gauges...pushing 17psi!

  
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dsm2gJul-22-05 03:42 AM
Member since Apr 10th 2002
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#8197, "RE: Surge / Intermittent boost"
In response to Reply # 0

          

Ok now I am only get boost with half throttle.
I go wot and no boost.
I feel a little pull at half. And even then it sucks.
Getting worse.

Stock 97 GST

  
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