TwinTurbo.NET: Nissan 300ZX forum - High Idle @1500, Temp rising to almost H, Exhaust Smoke!??!!
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Subject High Idle @1500, Temp rising to almost H, Exhaust Smoke!??!!
     
Posted by Tuner_Dev on September 06, 2013 at 2:58 PM
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Message My car has idle at around 900-1000 cold start and when it starts to warm up, it will idle to around 1500 and the temp will keep rising almost to the H mark and then drops back down to normal temp range on the gauge. I also have some noticeable exhaust smoke that goes hand in hand with this issue. The higher the rpms the bigger the smoke is. Got me scratching my head. Any suggestions?

Here's what I have done so far to the car since it was sitting for a very long time:

New fuel filter
New gas
New plugs
New pcv valves
New intake filter
Cleaned Tb and adjusted it
Cleaned maf
Cleaned engine coolant temp sensor
Cleaned fuel temp sensor
Adjusted TPS
Adjusted IACV
Boost leak test
Compression test (cyl 1 is 170 and 2-6 is 150-160)

Car had codes 34 and 42. I put the 1 megaohm resistor on it to get rid of the det sensor code for now as I am testing what else is causing this. So at the current moment, codes only read 42.

Please help me pinpoint this problem. I don't want to rule everything out just yet before I call it worn out turbo seals =(

     
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