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2G Recently Purchased 1995 GSX sometimes stalls during shifts.

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Clermas

Proven Member
32
17
Oct 22, 2018
Henderson, Nevada
Hello All,

I read quite a few posts about this and so I figure I know the issue just looking for confirmation. The previous owner seemed to have "capped off" the BOV discharge line that fed back to the intake, post MAF pre Turbo. I am not very familiar with turbo setups and this is a project car for my daughter and I. Yes indeed the discharge does sound very cool and I do intend to get the MAFT and appropriate MAF to get that sound back but for now I'll settle for being able to get it to the DMV for processing, haha.

One thing that puzzles me is the fact that we were able to drive it well over 200 miles before ever experiencing this issue. I had a friend drive it from Palm Springs to Las Vegas without issue. I also had a friend drive it to smog and back. Neither of them mentioned a single stall issue. (I didn't drive it as it had been 13 years since I last drove a manual).

Once I finally took it out, I stalled once during down shifting and thought that it was just lack of recent experience. Second time nothing, third time I seemed to get some sort of "blow back" when I punched it through second, around 5K the blow off valve went off and it felt almost like I had down shifted yet I had not.

Today I went to take it to the DMV and I stalled 4 times in 3 blocks...

before
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after
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Before I crank it over I am looking for the community's guidance, thanks so much.

Thanks for all the up coming help with my project and I look forward to growing with the community.
 
Last edited:
With a Speed Density car, you take out the Mass Airflow Sensor and install a Intake Air Temperature sensor in your turbo intake track (close to the throttle body) and a Manifold Absolute Pressure sensor hooked with a vacuum/pressure line from the intake to it for vacuum/boost readings to the ECU. In your car, it will install onto the intake manifold as you have a 2g. It all plugs into the MAF connector and you reconfigure the car for Speed Density and learn to tune, which to me, is so easy. It will come later in your build, after you have a good way to tune (ECMLink....$500, but so worth it).
Watching the build progress over the long run!!! :thumb:
 
Okay did a little investigating on that T in the BOV tubing. It seems to go down to the waste gate actuator, not sure why that was done, there doesn't seem to be another line ethier, which is suppose to go to a waste gate solenoid. Here is the diagram I was referencing:

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Use a dedicated line for the BOV line. The waste gate line, from the factory, goes from the turbo outlet little nipple (if it has one) and then to the WG with a tee to the solenoid. It should be a separate line for the WG also. They shouldn't be combined. They both need to see boost sources from somewhere.
 
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