1990 Nissan 300ZX "cause rpm high idle 2000" Questions

...cause this? I have a Nissan 300zx twin turbo 1990.... The engine and car are in very good condition ... well serviced... The idle speed will not go below 2000 rpm can you help as there is no manual ...

...RPM for more than a few seconds you have a problem. It is probably the iac (idle air control) valve. it will cause a high idle, if you put it in drive and let off brake n it takes off fast thats what ...

...GRAND AM GT 3.4 MOTOR,, STARITING TO GET HIGH IDLE WHEN STARTING CAR, SOMETIMES AT 1000-2000 RPM... DOEST,NT DO IT ALL THE TIME,, Make sure you check your vacuum hoses. This could cause a high

rpm .why ? Thanks for choosing FixYa and welcome. You may need to adjust your idle. It may be set too high. If not, you could have a bad idle control sensor. This would cause your vehicle to idle high

...the idle runs too high @ 1200 rpm when its @ operating temp It had 1 trouble code, idle speed too high Its a v6 3.1 A very common cause for your issue is a faulty TPS, ( throttle position sensor

...RPM SOMETIMES IT IDLES OK..IS IT A HARD FIX..THANKS... Try cleaning the throttle plate first . I wouldn't just change the IAC valve without testing , hooking up a scan tool that show engine data. A ...

...cause high rpm cleaned all throttle body cleaned idle valve checked for air leak checked return spring on throttle new air filter removed footwell mat new gasket on idle valve still constant high rpm ...

rpm's push the truck at low speeds. please help The most common cause of high idle is an intake air leak. It will cause a lean condition to the O2 sensors and the PCM's solution is to increase the

...high @ 1200 RPM. What should i do? Note: 329,000 miles. what engine would be more helpful. but just guessing i would say the engine is just tired and rings are worn and valves arent seating and you ...

...high rpm while in idle i have a 2003 dodge durango sxt.my problem is after i replaced my sparkplugs my rpm is runing almost 2000 while in idle and its not just for a minute i let it run for 5 minutes ...