2nd Generation Specific 1986-1992 Discussion

I Dont Think Even The Rotary God Can

Old 03-11-2004, 01:00 AM
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Ok where the pressure sensors vacuum source is supposed to go on the LIM (The Little Nipple) I have to have this open to atmosphere to keep the car running. If I plug it up with my finger the engine dies, I can raise the idle and plug it up but then the engine gets incredibly lumpy. I have been working on trouble shooting it using starting fluid and such but to no avail. I could really use help on this god knows ive asked this like a million times but nothing.
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Old 03-11-2004, 04:52 AM
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Where do you have the pressure sensor conencted right now? maybe you could move it back to the original spot and plug the nipple that the pressure sensor is on now?
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Old 03-11-2004, 06:33 AM
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The preassure sensor is not connected!
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Old 03-11-2004, 07:47 AM
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I think that line is supposed to have an orifice in it.. if its the one going to the pressure sensor on the pass side strut tower from the lim.
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Old 03-11-2004, 08:17 AM
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maybe the ps is bad and makes the engine stumble..try a different nipple tho
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Old 03-11-2004, 08:43 AM
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Check your injectors. If theyre clogged, they wont give the right amount of fuel, hence the stalling when you stop the vacuum leak. When you disconnect the pressure sensor, the comp sees atmospheric pressure, even though the intake manifold is actually in vacuum, and injects more fuel.



Have you checked your codes yet?
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Old 03-11-2004, 11:15 AM
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So you need a vac leak to keep your engine running. Hows your BAC. If that is adjusted to let in too little air you would have the exact same symptoms. You could also get similar results if your tps was reading rich(read open throttle).



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Old 03-11-2004, 07:10 PM
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how di i check for codes
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Old 03-11-2004, 08:16 PM
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take a look at your ecu
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Old 03-11-2004, 10:15 PM
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If my car was stock, I could help.



I dont have anything on my manifold any more.



Do you smell fuel in the engine bay? I still think it may be an injector issue.
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