TwinTurbo.NET: Nissan 300ZX forum - Start with the obvious/easiest first
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Subject Start with the obvious/easiest first
     
Posted by -Grimm- on July 11, 2014 at 1:04 PM
  This message has been viewed 204 times.
     
In Reply To Overheating troubleshooting. posted by Antihero on July 11, 2014 at 09:31 AM
     
Message Firstly, determine whether you have a water or air problem.

Overheating at a stop but not during highway driving indicates bad coolant flow.

Overheating constantly can be related to bad air or coolant flow.

Long heat up times (time after start up to operating temp) indicates thermostat is stuck open or missing.

Low coolant level, constantly diminishing coolant level indicates a leak in the system (commonly radiator cap, radiator end caps, hoses)

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1992 300ZX NA 5 Sp (Dead)
1990 300ZX NA Auto 2+2 (Dead)
1990 300ZX TT 5 Sp (Building)
2004 G35 Sport 6MT (DD)

     
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