Question about 1984 Nissan 300ZX
Car starts and runs great cold but after warming up it starts hesitating badly ive replaced the fuel filter and regulator and its better but still not good. HELP!!
Areas to look: Coolant temperature could be bad, located to the driver's side of the engine below the thermostat. corrode connections can cause the problem. Corrosion at the connections where it plugs into the air mass sensor. It's hard to see, but is is not that uncommon. Make a small tool you can get into the harness connectors to scrape each plug and then scrape the pins coming out of the air mass. The air mass sensor it self could be going south, but usually they act up even cold' Those would be areas I would start looking. Good luck.
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Posted on Jan 02, 2017
its due to what is called "vapor locking" the fuel in the lines top of engine gets hot and turns to vapor. the fix can be a new fuel pump if you have low pressure or just a pressure regulator.
hope this helps
Posted on Jul 25, 2009
Change your plugs and run a couple of bottles of injector cleaner through it. Sounds like you have some carbon buildup. Also check the catalytic converter for excessive back pressure. i hope this helps.
Posted on Aug 06, 2011
temperature sending unit to the brain but there's a possibility thats not it because i have that problem and it could be a cheep fix i tryed it but unfortnightly it didnt work but it was only 15.99 at O'rielly auto. its just a way to narrow down the problem
Posted on Jun 10, 2013
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