Engine Performance problem
1990 Nissan 300ZX 6 cyl Two Wheel Drive Automatic 76000 miles
My 300zx twin turbo is running rough. When the car is in park, revving the engine sounds great from below 1000 up to 6000 RPM. When it is in drive however, between 1,500 and 2,5000 RPMs the car shutters a bit, stutters and sounds as if it will stall out. Above 2,500 it sounds and runs fine again. When slowing down, when the engine drops to 2,000 RPMs it starts to shutter again and has little power when the gas is applied again to speed up.
Last time I took the car in, they said the fuel injectors were clogged and cleaned them. It seemed to improve for a month and then it went back to the problem listed above. I tried the injector cleaners from Autozone but that didn't help.
What can be done to correct this problem?
Sunday, September 6th, 2009 AT 11:39 AM