Throttle body air supplies
 A/T option car has a TBI heater called "PTC " |
 water drain hole to protect studs from rust, those small holes need to be blocked when installed by gasket, choices. |
 new gasket, 91 M/T HOME GROWN and nice ! if you block the path that is slot curve here, this will kill ported vacuum. dead. |
 valve is 100% closed, DP retracted, this gasket love loves to crack , and suck in and cause HAVOC. |
 The TPS has index slots, the TPS must never jam the TV open. it needs to be indexed correclty then calibrated, this has 2 parts, the throttle angles and an idle is closed switch, if the switch is not calibrated, bad things happen. |
 16v MPI start here. note the IAC port (suction) that i can block with clay and see if the IAC is stuck open. (racing idle, hot) , easy to do and hard factual answers, fast.... |
 The TV is 99.9% closed, ~0.0005 gap, the arrow shows the ISC suck port and must not suck air , above 150F. cleaning that of off is obvious I hope. |
 1995.5 and newer mono port EGR injector port 100% clogged the early 16v engines do not have this mono port they run the quad port EGR in the intake runners and are beach to clean. |
 16v throttle stop, factory setting, All 16v engines G16B , this is only a crude benchmark, i use a 0.0005 1/2 a thou, feeler guage to the the bore/TV valve gap. this is the MPI 16valve engines, 92 and up. there is no SUZ spec here, this is my reverse engineered data, (from Suzuki vacuum) |
 95 16v MPI induction path, No leaks allowed. Before or after TB ! |
 16v IAC thermal wax powered cold air , closes above 150F, see the IAC cut up in frame 11 above. all IAC work same ,but look driffernt, dont be fooled they are the same. thermal valve. |
 Idle speed 92+ |
 G16B MPI TB , idlle bleed, idle duty cycle setting hot. RTM read the factory manual for setting this hot. |
 G16B 16v MPI throttle body, whole. |
 16v TB |
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 This is the 200 hz modulation of the ISC. 50% is perfect. 5mS period, 2.5mS pulse (hot engine,) if wrong use the bleed screw to set it correctly. The ECU controls RPM , only you can set duty cycle and not have air leaks making the ISC go NUTS. |
 this is the kit sold in stores, use the correct gaskets for A/T or M/T and year . Some holes are pass through, others X5 small, are purposely blocked. the Mid body gasket loves to crack and suck in and wreck the bleed screw air supply controls. |
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