What causes rough idle on a 2003 Q45?
2003 Q45 Service Manual- 2002-2006 Q45. Resolving Rough Idle- 1990-1996 Q45. A list of some possible causes and solutions for rough or erratic idle. Stalling- 1990-1996 Q45.
Is there a service manual for the Q45?
Service manuals for all generations of Q45. – Big thanks to the moderators at NICO for putting this together. 2002-2006 Q45 Diagnostics 2003 Q45 Service Manual- 2002-2006 Q45. Resolving Rough Idle- 1990-1996 Q45.
When do you reprogram shift points in Infiniti Q45?
Reprogram Shift Points- 2002-2004 Q45. An update from Infiniti changes shift points, spark firing timing, and fuel injection timing for better performance. It also “replaces the accelerator pedal with one with a bit less lag in the pedal itself.”
How to check ignition timing 1990-1996 Q45?
Checking Ignition Timing- 1990-1996 Q45. Three ways to check for proper ignition timing. Replacing/Dropping the Oil Pan- 1990-1996 Q45. After a chain guide replacement procedure, plastic pieces may remain in the oil pan and block the oil pickup.
2003 Q45 Service Manual- 2002-2006 Q45. Resolving Rough Idle- 1990-1996 Q45. A list of some possible causes and solutions for rough or erratic idle. Stalling- 1990-1996 Q45.
Reprogram Shift Points- 2002-2004 Q45. An update from Infiniti changes shift points, spark firing timing, and fuel injection timing for better performance. It also “replaces the accelerator pedal with one with a bit less lag in the pedal itself.”
Checking Ignition Timing- 1990-1996 Q45. Three ways to check for proper ignition timing. Replacing/Dropping the Oil Pan- 1990-1996 Q45. After a chain guide replacement procedure, plastic pieces may remain in the oil pan and block the oil pickup.
Service manuals for all generations of Q45. – Big thanks to the moderators at NICO for putting this together. 2002-2006 Q45 Diagnostics 2003 Q45 Service Manual- 2002-2006 Q45. Resolving Rough Idle- 1990-1996 Q45.
What causes an engine to stall at idle?
If the ISC valve is gummed up with fuel varnish or dirt, it may stick, preventing the engine from maintaining the proper idle speed when the throttle closes. A faulty idle speed control circuit may also allow the engine to stall when idling if it fails to compensate for idle loads placed on the engine by the charging system or A/C compressor.
What causes a car to have a rough idle?
Resolving Rough Idle- 1990-1996 Q45. A list of some possible causes and solutions for rough or erratic idle. Stalling- 1990-1996 Q45. One possible transmission-related solution. A bad MAF is another common cause. Resolving Bucking/Jerking- 1990-1996 Q45.
Why is there no shifting in my Infiniti?
Erratic shifting or no shifting can indicate a more serious problem, such as a faulty valve body and a bad torque converter. Troubleshooting Infiniti transmission problems requires at minimum a diagnostic scanner that can read transmission fault codes.
What was the chain guide on a 1993 Q45?
The late production run of the 1993 Q45 may have the updated metal-backed chain guides. Chain Guide Replacement Photos- 1990-1993 Q45. Photos documenting a chain guide update on a 1992 Q45.
Can a transmission cooler be added to a Q45?
Injector Removal Made Easy- 1990-1996 Transmission: Adding An External Transmission Cooler- 1990-1996 Q45, also recommended for 1997-2001 Q45. Q45 transmissions, while mechanically quite reliable, can lack sufficient cooling in their factory configuration. This documents how to add a transmission cooler for longer life.
Are there any problems with the third generation Q45?
Problems with the third generation Q45 are comparatively minor, and mostly cosmetic. Some vehicles may have premature rusting along the door hems, and the plastic brackets securing the rear sunshade can break easily.
The late production run of the 1993 Q45 may have the updated metal-backed chain guides. Chain Guide Replacement Photos- 1990-1993 Q45. Photos documenting a chain guide update on a 1992 Q45.
Is there a problem with the radiator on a Q45?
The fragile radiator filler neck was revised after 1992, and engine vibration can be corrected with replacement of two motor mounts and the engine-control computer. A prevalent problem with the second-generation Q45 is the blower motor, which could make humming and/or ticking noises. A revised insulator cover can correct the problem.
When did the Q45 chain guide come out?
Chain Guides (CRITICAL for 1990-1993): Chain Guides Explained- 1990-1993 Q45. Why early Q45 chain guides can result in engine failure. Chain Guide Cutoff Date- 1993 Q45. The late production run of the 1993 Q45 may have the updated metal-backed chain guides.
Resolving Rough Idle- 1990-1996 Q45. A list of some possible causes and solutions for rough or erratic idle. Stalling- 1990-1996 Q45. One possible transmission-related solution. A bad MAF is another common cause. Resolving Bucking/Jerking- 1990-1996 Q45.