Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)
8.
Using CONSULT, perform the procedure as shown.
Monitor the idle speed (CMPS^RPM) on the CONSULT screen.
9.
Check the idle rpm and adjust to specification (if necessary) using the screw on the IACV-AAC valve. The table below shows ignition timing and
base idle speed for some models.
It the model or model year you are working on is not listed, refer to the appropriate service manual (EF & EC section), and perform the "IDLE
SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTION" procedure.
10.
Turn the engine off, and re-connect the TPS.
Technical Service Bulletin # 97-041A
Date: 980318
Engine - Cranks, No Start/Hard Start
Classification:
EC97-020a
Reference:
1TB97-041a
Date:
March 18,1998
Title:
ENGINE CRANKS, BUT WILL NOT START OR IS HARD TO START
APPLIED VEHICLES:
All models 1990-97
SERVICE INFORMATION
Use this bulletin if the engine cranks over normally, but is difficult to start or will not start at all.
This situation may be caused by small carbon deposits falling onto the intake and exhaust valve sealing surfaces which results in loss of compression.
NOTE: On 1997 or later Q45 (FY33) models, the above symptoms will also result if the IPPS (Infiniti Personal Protection System - NATS)
malfunctions. Use CONSULT to check for stored IPPS-related DTC codes for any FY33 models. If necessary, refer to page EL-422 of the 1997 service