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Nissan Forum: 90 300zx idle problem
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Old 12-18-2013, 05:26 AM
Xloyser Xloyser is offline
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Default 90 300zx idle problem

I start my 1990 Nissan 300zx and the engine wont idle Properly
The engines rpm go up to aprox 3000 come back down to around 1000 with out pressing the gas and after couple seconds the car stalls. What is wrong? Help please.....
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Old 12-19-2013, 01:24 AM
maximaj30 maximaj30 is offline
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should check fuel pressure first, might be the fuel pump. or the MAF is bad and making it stall
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Old 04-29-2016, 01:42 PM
jmencia jmencia is offline
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[QUOTE=Xloyser;46161]I start my 1990 Nissan 300zx and the engine wont idle Properly
The engines rpm go up to aprox 3000 come back down to around 1000 with out pressing the gas and after couple seconds the car stalls. What is wrong? Help please..... mine used to idle real bad but wouldn't stall. I cleaned out my throttle bodies with throttle body cleaner then idle was high so then i adjusted it with the IAC screw. This maybe your problem. Check for carbon build up at throttle bodies then check your idle air control valve and attempt to adjust it with a flat head screw driver. If it changes, i would replace the idle air control valve
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