Vacuum lines?

[Wannagofast83]

The other day I was looking under the hood and notice that one of my vacuum lines almost under the throttle body was disconnected. There's a place to hook up between two others, so I hooked it up and later that day my car wouldn't start, unhook it (don't know if it just a coincidence, didn't have any trouble before) and it started hard. Ever since it been sputtering and not wanting to start. Does any one know what those vacuum line go? I Have a few Ideas on to fix the sputtering but Ideas would help. Changed the TPS(not new), next I have a ECU from a parts car I'm gunna plug in then check MAF.

[fearlife87]

im having the same trouble, it's not the ecu, whats the year? 240 im assuming.

[fearlife87]

if it is the 89, you can check the computer coder without any kind of code reader, it has leds on the cpu and you can read it, and it will give you a general idea of where you problem is. im not sure if all s13's are this way.

[Wannagofast83]

Its a 89. Would there be codes even though the check engine light isn't on? I think that it smells kinda rich. Have you tried any thing to fix it?

[180fan]

did you cap any of those vac lines you went about pulling? Did you also make sure that you didn't pull the vac line that provides signal to the fpr?