dashpot Posted June 23, 2015 Share Posted June 23, 2015 Hello, I have a 77 280z powering a 76 280z cali chassis. This is my real car project and I feel I'm getting close to having this thing as a reliable daily driver. My issues is this: When starting my car, it idles around 800-900rpm and once I get going it starts to float up around 1200rpm. Once the car is warm I can easily find myself at a stoplight idling at 2k rpm. Now, if I leave the car in gear and basically bog it down (let the clutch partway out with the brake on), I can bring the idle down to anywhere I want between 1k-2k rpm. It is strange that it stabilizes wherever I "set" it. Besides this, the car seems to have plenty of power and no other noticeable faults in engine function. This is what seems to set my issues apart (i think) from the hundreds of high idle thread most people are having. Is there something related to the heating up of the motor or FI system that is causing this? FYI - Car lives at 6k feet. The timing is set correctly. Proper AFM function (checked all resistance levels). I've looked over the vacuum lines to the best of my knowledge - my latest breakthrough was moving the vac advance line from intake mani to the throttle body which fixed numerous idle/power issues. Did a vacuum "delete" to just run the basics. Fuel and oil pressure are good. Does this sound like faulty BCDD function or faulty cold start (stuck open)? I have the FSM and FI Bible for those that suggest it - there just may be something I'm not getting. Thanks in advance. Rock the Dashpot Quote Link to comment Share on other sites More sharing options...
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