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Showing results for tags 'cold start'.
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I have a 76 280z with a 280zxt swap. The car refuses to cold start unless i put the charger on it and put 125amps to it. The battery is brand new and reads fully charged on the charger. Why is this. The car will start fine once warm. Also sometimes the car will light the cylinders at the wrong time and send all 6 cylinders out through the emergency pop valve. Yesterday my CAS went bad and i have a new one coming. Could a bad CAS cause this weird fire and starting issue? Could the CHTS cause an issue when cold? Once started the car idles great hot or cold but wouldn't rev past 3000rpm What i have replaced or checked: Fuel pressure was 36 at idle cap rotor coil ignitor thermotime chts-have a resistance number that is a little off fuses have full voltage at ignitor and coil have 12v at CAS continuity from ecu to all sensors Airflow meter doesnt have any dead spots in it that i could find, although the resistance numbers aren't linear
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So my 1983 280ZX 2+2 is having cold start issues. when i turn it on it idles up real high like 900-1000rpm and if i touch nothing after a few seconds the rpms drop and it stalls out. If i crank it and pump the gas it will stay on and not stall out but if i just floor the pedal instead of pumping it it will stall out also the is a quiet backfire that sounds like it comes from the engine area. The reason im calling this a cold star issue is because if i pump the gas long enough for the motor to warm up to running temp i can let go of the gas and it will idle fine at 800-900rpms it revs smooths and sounds good.
