2nd Generation Specific 1986-1992 Discussion

Throttle Cuts Off At 4k

Old 12-16-2004, 10:09 AM
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So my car runs without the tubing on the inlet part of the turbo, but for some reason the car will not rev past 4k without stalling with loud backfiring. Could the AFM be messed up halfway because the code will come on when I disconnect it, but will go off when I plug it back in. ALso I have just about everything blocked off and running premix. Will it only rev up to 4k until I drive it around on the road, because I just have the motor and tranny in the car right know?
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Old 12-16-2004, 11:03 AM
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it needs the afm to run
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Old 12-16-2004, 03:29 PM
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I know that, but this one doesn't. I can have my hand over the commpressor housing and feel it sucking until it gets around 4ks then it just won't go any higher. But for some reason the cpu recognizes when I plug it in. I don't know what's going on?
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Old 12-16-2004, 04:24 PM
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Are the secondary injectors coming on? They should be kicking in around that rpm.
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Old 12-17-2004, 06:53 AM
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As a test, pull the TPS plug & see if that clears it up.
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Old 12-17-2004, 10:00 AM
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why are you trying to run it with no afm?
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Old 12-17-2004, 10:24 AM
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I'me not trying to, it just does it. When I have it on, it just floats instead of messes up when I push on the flap.



How would I figure out if the secondaries come on? Just listen with a stethescope or what?
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Old 12-17-2004, 10:54 AM
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Originally Posted by Houstonderk' date='Dec 17 2004, 08:23 AM
I'me not trying to, it just does it. When I have it on, it just floats instead of messes up when I push on the flap.



How would I figure out if the secondaries come on? Just listen with a stethescope or what?



you could put a voltmeter on it, or a test light
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Old 12-18-2004, 10:55 AM
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So do these cars smoke alot when premixing, because I have noticed that it does not go away that fast.
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Old 12-18-2004, 06:38 PM
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Originally Posted by Houstonderk' date='Dec 18 2004, 08:55 AM
So do these cars smoke alot when premixing, because I have noticed that it does not go away that fast.



if you're using the right amount of oil, it shouldnt smoke at all
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