Re: 1993 Nissan Altima. Problem: Difficult to start, rough idle, and low RPM hesitation /stalling. I have replaced fuel filter, air cleaner, spark plugs, idle position sensor, distributor, O2 sensor, and coil. The exhaust system has been checked for good flow. EGR valve and MASS Air Flow sensor appears to be working in accordance with info in Mitchell manual. Fuel pressure is 42 - 44 lbs. Water temp sensor appears OK because once the engine is warm the fans cycle and the EGR valve cycles. Also, the ECM shows no faults – code 55. When the engine is cold, it runs almost flawlessly. Once the engine is warm, upon the application of the throttle, the engine stall/ dies, occasionally blowing backwards thru the breather. Please help me. Thank you, Thomas56a. Thomas56a@yahoo.com
Feb 6, 2006 at 5:27 AM