Mechanics

RACK & PINION

1997 Nissan Maxima

Steering problem
1997 Nissan Maxima 6 cyl Manual 160000 miles

IT APPEARS THAT IT IS LEAKING FROM BOTH SIDES.

IS IT NECESSARY TO REPLACE THE COMPLETE RACK ASSY AND SWAY BAR LINK? WHAT IS THE MOST ENCONOMICAL SOLUTION?

MY CHECK ENGINE LIGHT WAS ON AND I HAD IT DIAGNOISED AS HAVING TO REPLACE THE KNOCK SENSOR AND NEUTRAL POSITON SWITCH SENSOR? THESE ARE VERY EXPENSIVE AND DO I NEED TO REPLACE THESE? WHAT ARE MY OPTIONS?

THANK YOU FOR YOUR HONEST REPLY.
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97max
March 28, 2009.




Hello –

To better assist you please tell me if your model is the GLE, GXE, or SE. Also your engine size in liter and the 8th digit of your VIN.

Okay, so if I understand you – your rack and pinion assemble is leaking from both sides.

Your anti-sway bar links need replacing.

You had a check engine light and it said to replace the knock sensor and neutral position switch sensor.

Did they give you the codes to go with that?

What is the car doing?

If possible so I get the exact codes, please go to Auto Zone (AZ) or O’Reilly’s (OR) and for FREE they can pull the codes to the car. Most important: Once they check your codes, if they find something and you don’t get it fixed and need to get back with us, please make sure you tell us exactly what the code was, number and all. Example, if the code was E0568 O2 Sensor bad. Then make sure you give us all of that. While there for FREE also they can bring their tester out and check your battery and alternator.

Sometimes the codes are generic…….I want to make sure.

Thank you very much for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Mar 28, 2009.
IN REPLY TO YOUR QUESTIONS, MY ENGINE IS: model GXE

3.0 liter DOHC 24 VALVE 190hp V6

VIN - 8th digit is D

Codes for sensors
PO325 - knock sensor
PO 705 - neutrua lposition switch

car is currently running fine.
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Tiny
97max
Mar 29, 2009.
Hello –

If the car is running just fine……I wouldn’t worry about changing anything. I have attached info on checking out the knock sensor. Though I gave you steps for the harness and sub-harness, I would just start with the component check out.

DTC P0325 - KNOCK SENSOR
1. Check Knock Sensor Harness Input Signal Circuit

Loosen and retighten engine ground screws. Turn ignition off. Disconnect ECM harness connector and knock sensor harness connector. See Fig. 2 and Fig. 11 . Using an ohmmeter, check continuity between knock sensor harness connector terminal No. 1 (White wire) and ECM harness connector terminal No. 64. If no continuity exists, repair open in White wire. If continuity exists, go to next step.

2. Check Knock Sensor Sub-Harness Input Signal Circuit

Using an ohmmeter, measure resistance between knock sensor sub-harness connector terminal No. 1 (White wire) and ground. Resistance should be 500-620 k/ohms. If resistance is as specified, check for fault in White wire. If resistance is not as specified, go to next step.

3. Check Component

Using an ohmmeter, measure resistance between sensor terminal No. 2 (White wire) and ground. If resistance is not 500,000-620,000 ohms, replace knock sensor. If resistance is within specified range, disconnect ECM wiring harness connector. Check ECM pin terminals for damage or corrosion. Repair if necessary and perform FINAL CHECK.

Fig. 11: Locating Knock Sensor Sub-Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.


http://www.2carpros.com/forum/automotive_pictures/248015_F2_4.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_F11_1.jpg



I again have attached info for the Neutral Position Switch. I again would start with the Component checkout.

DTC P0705 - PARK/NEUTRAL POSITION SWITCH
NOTE: Steps 1-3 are for M/T models. For A/T models, go to step 4.

1. Check Ground Circuit

Turn ignition off. Disconnect neutral position switch harness connector. See Fig. 24. Using an ohmmeter, check continuity between harness connector terminal No. 4 (Black wire) and body ground. If no continuity exists, repair open Black wire. If continuity exists, go to next step.

2. Check Input Signal Circuit

Disconnect ECM harness connector. See Fig. 1. Using an ohmmeter, check continuity between neutral position switch harness connector terminal No. 2 (Green/White wire) and ECM harness connector terminal No. 22. If no continuity exists, repair open in Green/White wire. If continuity exists, go to next step

3. Check Component

Disconnect neutral position switch harness connector. Using an ohmmeter, check for continuity as follows:
• With gear selector in Reverse, continuity should be present terminals 2 and 4.
• With gear selector in Neutral, continuity should be present terminals 1 and 3.
• With gear selector in any other position, continuity should not be present between terminals.
See Fig. 22.

If continuity is not as specified, replace neutral position switch. If continuity is as specified, check ECM pins and terminals for damage and check connection of ECM harness connector. Reconnect ECM harness connector and retest.

Fig. 22: Identifying Neutral Position Switch Harness Connector Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.


http://www.2carpros.com/forum/automotive_pictures/248015_F1_4.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_F22_2.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_F24_1.jpg



As for the rack leaking. It does have seals and O’rings that can be replaced. Sometimes depending on the cost it is better to replace the entire rack just because all of the parts are worn, not just the seals.


http://www.2carpros.com/forum/automotive_pictures/248015_F9_1.jpg



I can provide directions on the removal and installation on that if you would like.

I can also provide directions on the removal of the stabilizer bar if you would like that.

Thank you very much for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Mar 30, 2009.

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