gmrulz4u Posted October 12, 2003 Report Share Posted October 12, 2003 I was recently doing some regular checks on my 89 Cutlass(2.8) and when I was checking the vacuum to the transmission modulator, I could see a white colored plug under the intake air box. It was a 3 socket female plug. There was nothing plugged into it, and so I was wondering if anyone knows what exactly it's there for? THANKS! Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 12, 2003 Report Share Posted October 12, 2003 on the tranny it self? if so could be TC lock up Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted October 12, 2003 Report Share Posted October 12, 2003 I was recently doing some regular checks on my 89 Cutlass(2.8) and when I was checking the vacuum to the transmission modulator, I could see a white colored plug under the intake air box. It was a 3 socket female plug. There was nothing plugged into it, and so I was wondering if anyone knows what exactly it's there for? THANKS! does it lead to the harness up near the IAT sensor(if you have one? I've never worked on 89 so I personally do not know)? if so, it's probably just the test port, there are a few in pretty much every car w/ a computer for various testing purposes. Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 13, 2003 Report Share Posted October 13, 2003 i have seen it on my car and it has a plug on it i was at school and saw one on the bench thought to my self "that looks just like mine" so i checked and it was just like mine im not sure what it is for but mine did have a plug in it Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted October 13, 2003 Author Report Share Posted October 13, 2003 I BELIEVE that this pic shows the plug that I am referring to: I am going back out tonight to check and make sure that this plug was the one that had nothing connected to it... Quote Link to comment Share on other sites More sharing options...
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