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Engine, Trans, F/I & Tuning

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Community Member Credit: Eddy

The fans on my 6thgen Maxima went bad, so I decided to try out these eBay ones before buying a more expensive brand again. At this price, I figured I could repurpose them for something else in the event my car was not cooling properly. I previously had a SPAL fan where the motor seized. To my surprise, these actually ended up working great with no issues. While a shroud is recommended, I don’t have one and my car didn’t have any issues with cooling during the summer. I have an external water temp gauge and temps are as they normally should be.

So if you’re looking for a Mishimoto alternative or OEM stock fan replacement, you can give these a try. And quite honestly, I saw no difference between these and a set a Mishimoto fans that I have on another car. I have these wired up directly to stock harness used a 4thgen Maxima pigtail. No external relay was required for these.

Description: 2×14”inch Slim Fan Push Pull Engine Radiator Cooling 90W Mount Kit Universal
Price: $32 Shipped (for both fans)
Order Link: https://www.ebay.com/itm/192031451879

Details:

  • Diameter: 14 inches (Blade to Blade)
  • Thickness: 2.56 inches
  • Watts: 90W
  • CFM (Cubic Feet per Minute): 2550 cfm
  • RPM (Maximum Fan Revolution(s) Per Minute ): 2250 rpm
  • Number of Blades: 8 pcs
  • Color : Black

Package Included:

  • 2x 14” Black Electric Radiator Cooling Fan
  • 2x Mount Hardware Kit
  • 2x Installation instruction

Mishimoto Comparison

PRODUCT SPECS

TYPE OF ENDSFemale Snap-Plug Terminal
MATERIALPlastic
AIR TEMP WHILE TESTED72°F (22°C)
NORMAL CURRENT (AMPS)7.8
VOLTS12
HOUSING DIAMETER14.75″
OVERALL THICKNESS2.5″
REVERSETrue
BLADE STYLECurved
INRUSH CURRENT (AMPS)15.1
# OF BLADES8
FAN RPM2200
FAN DIAMETER14″
OVERALL DEPTH2.67″
CFM1300

Community Member Credit: Benzolorenzo1

About 6 months ago I received the death code P1778 (stepper motor) in my 2008 Altima. I searched far and wide, low and high, only to be told 2 things… you need a new transmission, or you need a new valve body. Since I didn’t have $2500 for a new trans, let alone $800 for the valve body I decided to look into this a little further. watched a YouTube video the only one I could find was a Nissan armada, but thought what the hell. I drained the fluid, dropped the pan, yanked out the valve body, and found that little bastard that gave me such trouble.

Now with part in hand I went to my local parts store, and told we don’t sell that part, its not even in our system… went to the dealership, told the same thing and was told I needed to buy a new transmission as they are not “serviceable” funny but I had the part in hand, how can it be not serviceable?

Lastly I took a gamble, I went to eBay, ordered a stepper motor. 20k miles later, still no code, no whine, and no lock up.

Part Number: 203452A
Description: JF011E RE0F10E F1CJA Transmission CVT Stepper Motor For SENTRAN Nissan Dodge Refurbished
Price: $30-$40

Here is how I saved thousands and bought a $35 part.

  1. Drain fluid.
  2. Drop pan (clean with brake cleaner)
  3. Remove the 3 bolts holding filter. (clean with brake cleaner while your at it)
  4. Remove the valve body about 11 bolts
  5. Remove the stepper motor from the top of the valve body (the side you can’t see with the pan off) 2 bolts
  6. Replace with the new stepper motor found here https://www.ebay.com/itm/282288900117 or https://www.ebay.com/itm/183910578995
  7. Take a piece of dental floss about a foot long and hold the spring loaded arm back against the stepper motor and return the valve body back to the transmission.
  8. After you have a few bolts in place remove the floss before you tighten all the way.
  9. Reconnect trans filter and bolt back into place.
  10. Rejoin the fluid pan to the transmission and replace with quality CVT fluid. Amsoil makes a great product.

I hope this helps and if you have questions please feel free to ask.

Video How-to (Many thanks to Budget Drift for this)

Community Member Credit: Jose Gutierrez / Ruben Corga

While this is advertised as Plug-n-Play, it’s really not. You have to run some extra shielded wires for two signals as it does not come with with the crank and cam signal wires. This has happened to about 4 maxima owners who purchased this harness. Overall, the harness does work but it’s not straight plug-n-play and questionable if its worth $500. Car may or may not run without these wires so please keep this in mind.

Order Link: https://turbokits.com/Nissan/Maxima/Engine_Management/

Product Info:

These are harnesses for the use of Haltech’s Elite 2500 units.

  • The Elite has full control of fuel and ignition timing.
  • Choose your specific vehicle in the dropdown menu and then select the Elite unit you wish to use.
  • Eight cylinder engines are best suited to the Elite 2500 or 2000 to retain sequential injection and direct fire ignition.
  • Six cylinder engines are best suited to the Elite 2500, 2000, or 750 to retain sequential injection and direct fire ignition.
  • Four cylinder engines can be operated with any of the available Elite units and still retain sequential injection and direct fire ignition.
  • ONLY the Elite 1500 and 2500 have drive by wire throttle control!
  • In some instances, the factory ECU remains in place to control dash gauges, drive-by-wire throttle systems, and other amenities.
  • Fully plug and play. Easy to install. Easy to uninstall.
  • Boomslang fabricates the sub-harnesses. No cores needed.
  • Saves time, hard-wiring costs, and your factory wire harness.

If you are DIY person and love working on your Nissan Maxima, then this tool is a MUST HAVE! When you go to the Nissan dealer, the person working on your car typically uses a tool called a Nissan Consult. The Nissan Consult that the dealer uses costs thousand of dollars and is only available to dealers. By using the Nissan DataScan software, a laptop and a generic VAG COM OBDII adapter you can achieve just about the same level of on-board diagnosis that $5,000 Nissan Consult provides. This software allows you to:

  • Check CEL codes
  • Check/Reset ABS and SRS-Airbag Faults
  • Check/Reset TCM Codes
  • Adjust timing
  • Perform Idle Air Relearn
  • Reset ECU learned settings
  • Data-log
  • Program keys
  • Check Emissions Readiness Monitors
  • Active Test temporary modify some of the engine parameters for testing purposes
  • And Much much more….

The software itself costs $55.00 and generic cable costs around $7.00-$8.00. 

Software License Purchase Link: Nissan DataScan II

Software Download Links:

OBD2 Cable Order Links: 

You can find the cables on eBay between $12.00-$20.00 shipped. It ranges based on location and shipping. Search for the following keywords on eBay and you will find it: “KKL 409.1 VAG-COM OBD2 USB Cable

Below are all the functions it provides:

ECU Part Number

This is the main window of the NDSII software which shows the ECM Nissan Identification part number. Basic and Advance Functions can be selected by clicking on the buttons, using the shortcut keys (F1 – F11) or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates communication between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Data Display Settings

This window is used to assign parameters to be displayed by the Data Display function. Only parameters that are supported by the currently connected ECU are available for selection. Gauges are counted from left to right, top to bottom. Multiple gauges can monitor the same parameter.

Data Logging ECM

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window. The data log file can be analysed using the Data Replay or Log Analyser functions.

Self Diagnostics ECM

Self Diagnostics function allows users to read and reset engine ECU error codes.

Idle Adjustment

Idle Adjustment function allows users to adjust the base idle RPM. The setting is saved to the ECU and it does not reset with engine restart.

Timing Adjustment

Timing Adjustment function allows users to adjust the base ignition timing. The setting is saved to the ECU and it does not reset with engine restart.

Active Test ECM

Active Test allows users to temporary modify some of the engine parameters for testing purposes. They return to their original values when a function is stopped, PC disconnected or engine restarted.

Note: It is possible to damage the engine if the A/F Base % functions is used to excessively modify fuel delivery. Likewise the engine may overheat if the Engine Temperature is set to low for a long period of time. Do not use those functions if you are not sure how they will effect your engine.

Work Support

Work Support functions allow users to perform some of the advance service procedures. Those procedures may need to be performed after replacement parts are installed.

Clear Self Learn – clears the A/F Base SL map learned by the ECU.

Idle Air Volume Learn – is an operation to learn the fully closed position of the throttle valve.

Program Immobiliser Key – allows to register the Nissan transponder keys with the Immobiliser Note: The immobiliser security PIN CODE needs to be known. Initially all registered keys will be erased and all keys will need to be reregistered.

Cylinder Power Test

Cylinder Power Test function can be used to identify cylinder that is under performing. This function allows shutting down individual cylinders. If all of the cylinders are producing the same amount of power the engine RPMs will drop exactly the same amount on each cylinder that is cancelled.

Log Analyser is used to review log files previously generated by with Data Logging function. Graphs are drawn by selecting boxes next to parameter value. Graph colours match the parameter value colours.

Speed Test

Speed Test is a unique function for measuring car’s acceleration performance. Predefined or user specific tests can be used. Due to the low resolution of Nissan speed sensors, measurements should only be used as a guide and not a true reflection of car’s performance.

Note: This function should not be used while driving on public roads.

Address Watch

Address Watch function is used for monitor specific ECU memory addresses. By monitoring a memory address extra information can be retrieved that is not normally available using Consult II protocol. A knock sensor reading can be obtain using this method if knock sensor memory address is known.

Wideband O2 sensor

Nissan DataScan II also supports wideband Air/Fuel ratio meters from Innovate Motorsports. A second serial port is used to connect to the controller and collect data.

The data from the wideband meter can be displayed or logged in conjunction with other engine parameters using the Data Logging function.

ECU Part Number BCM

The BCM tab shows the BCM Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. All functions are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Self Diagnostics BCM

Self Diagnostics function allows users to read and reset BCM error codes.

Active Test BCM

Active Test allows users to temporally activate some of the functions of the BCM. This is usually used to manually test the functionality of the systems controlled by the BCM.

Note: Functions not supported by the BCM are disabled (grayed out).

ECU Part Number TCM

The TCM tab shows the TCM Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Data Logging TCM

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window so the data can be logged while it is displayed. The data log file can be analysed using the Data Replay or Data Analyser functions.

Self Diagnostics TCM

Self Diagnostics function allows users to read and reset TCM error codes.

ECU Part Number ABS

The ABS tab shows the ABS Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Data Logging ABS

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window so the data can be logged while it is displayed. The data log file can be analysed using the Data Replay or Data Analyser functions.

Self Diagnostics ABS

Self Diagnostics function allows users to read and reset ABS error codes.

Work Support ABS

Work Support functions allow users to perform advance service procedures. Those procedures may need to be performed after replacing parts.

Steering Angle Sensor Reset – After removing/installing or replacing VDC/TCS/ABS control unit, steering angle sensor, steering components, suspension components, and tires, or after adjusting wheel alignment, make sure to adjust neutral position of steering angle sensor before running vehicle.

ECU Part Number SRS

The SRS tab shows the SRS Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. All functions are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Self Diagnostics SRS

Self Diagnostics function allows users to read and reset SRS error codes.

Note: Recorded faults are historical and can not be cleared.

Work Support

Work Support functions allow users to perform the advance service procedures. Those procedures may need to be performed after replacement parts are installed.

Program Immobiliser Key – allows to register the Nissan transponder keys with the Immobiliser Note: The immobiliser security PIN CODE needs to be known. Initially all registered keys will be erased and all keys will need to be reregistered.

OBDII Self Diagnostics

OBDII Self Diagnostics function allows users to read and reset ECU error codes.

OBDII Monitor Status

OBDII Monitor Status shows the current status of various monitoring systems used by the car’s engine management system.

OBDII Log Analyser

Log Analyser is used to review log files previously generated by with Data Logging function. Graphs are drawn by selecting boxes next to parameter value. Graph colours match the parameter value colours.

OBDII Fuel System Satus

OBDII Fuel System Status can be used to check if the car’s fuel system is running in Closed Loop mode.

Fuel systems do not normally refer to injector banks. They are intended to represent completely different fuel systems that can independently enter and exit closed loop fuel. Banks of injectors on a V-engine are generally not independent and share the same closed-loop enablement criteria.

OBDII Data Logging

Selected OBDII parameters can be logged to a file. The data log file can then be analysed using the Log Analyser function.

Due to the slow nature of OBDII protocol it’s recommended to log only the required parameters.

Member Credit:  Sunday Ortiz & Gerson Flores

This is only intended for a providing a reference to the list of core parts used in the 7GM 6-Speed swap that was successfully completed by Gerson Flores & Sunday Ortiz. It’s not a how-to or step-by-step process. Please only attempt to do the swap if you are mechanically inclined and understand the Nissan FSM (Factory Service Manuals).

View all 7GM 6-Speed Swaps using the links below:

Full Parts List:

Please note that all of these items were purchased brand with the exception of a few parts (custom & discontinued parts). The total cost for all the parts below adds up to approximately $4,522.00. You may be able to find parts for much less and save money. 

 

Photos:

Video:

 

 

Member Credit: Gerson Flores & Sunday Ortiz

Introducing another 7thgen Nissan Maxima with a 6-Speed Swap. Good work Gerson!

Quick Drive

First Official Startup

Quick Pull

Dyno Numbers (281 WHP / 262 TQ SAE)

Quick Drive & Pulls

Community Member Credit: BULL

Hello everyone, I put this together to help others out when doing timing in these engines. As great as this engine is, internally it has some life-threatening issues that will decrease it longevity if not addressed.
These are in the timing chain area: Gallery gasket, Chain tensioners and guides

Note: Most will adopt the mentality of marking the removal and repeat the install and this is a great idea. Unfortunately this wont work for all. Turning the engine until all marks are aligned can be a waste of time due to the many times it might require and removal and resetting might just be the easiest.

Here are some simple picture explicit ways of how to double check your work. You can start by aligning the damper with this timing mark in the cover, if doubtful about the crank cog you can use the this method as confirmation

Once timing cover is loosened and removed you’ll be left with this view. As you all can see my gasket has broken.

Then after everything comes off

To make sure your cams are aligned the pin need will align with the indentation in the cam girdle like so:

I learned that even that it had 120k miles this had happened: I had no suspicion of this nor heard any noise.

This job can be expensive to do. How expensive is entirely up to you.
to fix these the proper way OEM tensioners are a $120 + option that requires the removal of the camshafts girdle and removal of the VVEL Eccentric shaft that I had no interest in doing. With the VQ40 nissan sells replacement cam shoes but not for the VQ37 . The plunger part of the tensioner does not go bad so soon.

The plunger/Shoe from a VQ35 DE is the same part and can interchange. These parts are $27 for the pair. The shoe appears to be made from the same material of the OEM one so I’ll check it again in 100k miles

I painted the marks and between the FSM and other pictures I was able to find I confirmed. Final result was the start.

Remember:
Circle dots are for Bank 1
Oval dots are for Bank 2

These you will align with the two orange links on the cam chain, the single chain link with meet the oval mark on the VTC for bank 2 and circle on the VTC for bank 1

There are 3 ways to verify the crank, with the Damper like the first pic showed, aligning the crank tooth with the mark on the pump and with the chain’s orange link and the mark at 5 o clock on the cog.

Make sure you leave NO tension on the untensioned sides of the chain as any looseness can alter timing.

The last tension you should pull the pin from is the main cam, check tension and if it’s too loose use a bar to click the tensioner over one click