Tech Tip: Nissan Truck has MIL On, Stalls – UnderhoodService

Tech Tip: Nissan Truck has MIL On, Stalls

Use this bulletin if a 1996-1997 Nissan truck will not maintain idle or idles roughly after an engine cold soak and/or the MIL is on with DTC P0400 stored in the ECM. A countermeasure EGR valve is available to resolve such incidents if the cause is a sticking EGR valve.

Affected Vehicles: All 1996-’97 Nissan trucks

Use this bulletin if a 1996-’97 truck will not maintain idle or idles roughly after an engine cold soak and/or the MIL is on with DTC P0400 stored in the ECM. A countermeasure EGR valve is available to resolve such incidents if the cause is a sticking EGR valve.

Service Procedure
With the engine cold, perform an inspection of the EGR valve as follows:

1. Apply vacuum to the EGR valve with a hand vacuum pump, then release the vacuum (see Figure 1).

2. Check that the EGR valve opens when the vacuum is applied and closes when the vacuum is released.

a. If the EGR valve sticks open or does not open and close smoothly, replace the EGR valve with the countermeasure EGR valve and gasket.

b. If the EGR valve opens and closes smoothly, refer to Trouble Diagnosis in the EC section of the appropriate service manual to diagnose this incident.

Technical service bulletin courtesy of ALLDATA.

For additional information, visit www.alldata.com.

You May Also Like

Comprehensive Guide to Serpentine Belt and Drive System Maintenance

Properly maintaining the entire drive system prevents premature belt wear and system failure, ensuring customer satisfaction and vehicle reliability.

When customers report noises under the hood, simply replacing the serpentine belt might not solve the problem. Modern belts, made from synthetic rubber, can last over 100,000 miles, but other components like tensioners, idlers, and pulleys also wear out and need inspection. This article outlines steps for a thorough inspection, including checking belt grooves, tensioner indicators, and pulley movement. Properly maintaining the entire drive system prevents premature belt wear and system failure, ensuring customer satisfaction and vehicle reliability.

Randy Breaux, Group President, GPC North America, Talks to AMN Drivetime

At NAPA, “Breaux Knows” business relationships, ABCs to avoid, and serving the automotive professional.

Understanding Customer Clunking And Clicking Complaints

Can Your Techs Diagnose and Repair Modern Axle Complaints?

BMW Spark Plug Replacement

Here are a few things that you need to know before replacing spark plugs in a BMW.

Blink CEO to Present at Energy, Power & Renewables Conference

The event is scheduled for June 17 at 1:10 p.m. ET.

Other Posts

How Modern Car Sensors Optimize Performance and Emissions

Learn how Standard ensures accuracy, speed, and durability in their sensors to maximize engine performance and efficiency.

Tool Time Podcast: Lumileds

Nadine and Eric sit down with Lumileds’ Aubry Baugh to discuss all the professional lighting solutions the company has to offer.

Diagnosing Intercooler Boost Trouble Code P0299

The criteria for setting the code is very basic.

Asahi Kasei Achieves Electrolyte Technological Breakthrough

The company said it successfully achieved proof of concept for lithium-ion batteries with improved power output and service life.