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Old 05-03-2010, 05:59 PM   #1
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I just started my car (90 chassis/94 engine/ms) for the first time in many a month and at first the idle was between (tach isn't working so I don't exactly know where it is) 1500-2000 rpm's and there was a major suck/blow noise.

It was the iacv, which after reading a few threads I decided to not hook it up. So then I blocked it off ala hose with plug in the end. Then I started her again and she would run for about 2 seconds around 300-700 rpm's then die.

I also fucked the timing up so I had to retime it; and seeing how I pulled the cas off I fooled with that a ---- hair each way and it proved to do nothing substantial.

Is there a setting in ms that I need to turn off for the iacv or do I perhaps have something else ailing my car?
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Old 05-03-2010, 08:34 PM   #2
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If you block the IACV, the engine can't run without the throttle being partly open because there is no way for air to enter.
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Old 05-03-2010, 08:36 PM   #3
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So what your suggesting is I open my throttle plate more to let more air into the intake manifold to keep the car running. That's crazy enough that it just might work!
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Old 05-03-2010, 08:39 PM   #4
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You need to adjust the BISS. Its the little screw in the top of the throttle body. Unplug the IACV, back that screw out a good bit and restart the car. Once you get it restarted, get back the idle down to 800rpm, lock the timing at 10 degrees and re-set it. Unlock the timing, and then set the idle where you want it.
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Old 05-03-2010, 08:50 PM   #5
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Also sweet! Thanks for the heads up, I will be doing this as soon as I exit drunk stage and return to buzzed stage. Do I still need to do the jumper thing with MS? I am pretty sure I do but not 100%
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Old 05-03-2010, 08:54 PM   #6
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No. Just open tunerstudio/megatune. Go to to your ignition settings and change the "fixed angle" setting to 10* and burn. Re-set the timing with a timing light, and then change the "fixed angle" back to -10.
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Old 05-03-2010, 09:23 PM   #7
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Sonofabitch! My laptop is dead as a doornail. I didn't think that sounded rite but figured I'd take a shot in the dark at it and was hoping I could finish this sans portable computer. Thanks again!
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Old 05-12-2010, 10:46 AM   #8
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Just wanted to close this thread. Adjusted the idle screw about 4 full turns to get her around 800rpm's, adjusted the diverter valve which was about as loose as it could be before the adjuster falling out, and set the timing.
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