i think my vaccum system is screwed

[90gsxREDRUM]

alright. to start off with this is my first post. i had searched for my problem and recovered no results. so i will make a thread to see if its normal.

i just picked up a 1990 gsx. i was a nissan fanatic until i had frame problems but now i upgraded and took some parts off my 240sx to put on my gsx. well today i was insalling my boost gauge and in the chiltons manual it shows the throttle body having 4 vaccum lines on the top. well mine has 2. i also noticed a few lines hanging free with sticks shoved in them. one of the lines was from the vsv(fuel pressure solenoid). its a vaccum line nightmare.i was wondering if the 1990 gsx differs from the 1991 or 1992.i am guessing the person before me switched it and had a half a$$ job done on the wiring and vaccum system. bear with me. i only paid $300 bucks for it and the only problem is a blown tranny. so i thought. i hope i dont have to switch it out. someone help.

 

[oldman]

You have the right one, 90 TB is different from 91-94. He probably did the vacuum line removal mode but you should hook back the fuel pressure solenoid lines. Here's a diagram showing how it should be run. http://www.taboospeedshop.com/emissions.htm After you re-install the vacuum lines to the fps, you can tap that line for the boost gauge like here. http://www.vfaq.com/mods/wayback/BradBauer/gauges/boost.html Good luck.

 

[90gsxREDRUM]

thankx for the fast response and the diagram really helped. there were a few lines mixed up but thats just from a person not understanding the turbo system. my boost gauge works perfect and the car seems to idle better. i cant drive it now because of 2 reasons. one is my suspended licences, damn and two there is no 1st or second or reverse so i will be saving money to get a new tranny. so when i drive it i will see how the turbo system is running.

 

[oldman]

You are welcome.