My'91 zxtt idles like new, but if I rev it to 3500rpms it stutters badly; the dash temp gauge reads "L" and the heater doesn't blow hot air even after 30 minutes. haven't run thecu diag yet, I think the sensors are toast anyways. since there are bare wires, yellow on the coolant passages at the front of the engine. perhaps due to a timing belt change prior to my ownership.
imagine ther being a near perfect condition 300zxtt here
Follow Ups
at how many rpms does the zx change to open loop - Cori17:14:41 09/20/08