jmead Posted June 10, 2003 Share Posted June 10, 2003 I've got a 1976 280z w/ auto transmission Since I installed my upgraded throttle body (60mm 240sx), I've been having a problem. Sometimes the car "pops" a little bit, you can feel it very clearly in the gas pedal, and my girlfriend said she could feel it from the passenger side, too. It used to just happen once when you pressed the pedal hard from a stop, but now it seems to do it all the time under 30mph, even with the slightest acceleration. When it happens, the car lurches a little bit, and acceleration isn't even close to what it normally is. In addition, since this started happening, the car has also been stalling. The tach jumps up to 3500-4000, flutters around a little bit, along with a loss of power, and once the car slows it just shuts down completely. Normally if you re-start the car its fine, but on my way home it happened several times, when it normally wouldn't. Does anyone have any ideas? It’s to the point where I can't even drive my car now, so I'd really like to get it back into tip-top shape. Thanks for any help. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted June 10, 2003 Share Posted June 10, 2003 Sounds like a vacuum leak, possibly a boot in the process of tearing as you stretched it over the mouth of the throttle body. Quote Link to comment Share on other sites More sharing options...
jmead Posted June 10, 2003 Author Share Posted June 10, 2003 OK, we've got the hose that connects the filter to the AFM, and then the hose that connects the AFM to the throttle body...anything else I should check? Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted June 10, 2003 Share Posted June 10, 2003 Every hose connection you can find after the airflow meter. Your symptoms are exactly like a massive leak. Quote Link to comment Share on other sites More sharing options...
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