Question about 1996 Geo Tracker 2 Door

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Can't get good gas flow when i step on gass

Vehicle was parked for 3 1/2 yrs, have replaced the egr sylonoid and cleaned the egr vale

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Check clutch.

Posted on Jan 18, 2009

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99 maxima ran till it was parked now it turns over will not start gave code p0400 any ideas


The fault is somewhere around the EGR valve - probably the EGR valve or the throttle position sensor.

Before replacing any sensors try removing and cleaning the EGR.

Here's a Youtube link that may be of help to you:

1999 maxima egr Google Search

This link explains about the EGR:
P0400 Exhaust Gas Recirculation Flow Malfunction

CEL code P0400 EGR Flow Malfunction

Mar 27, 2016 | Cars & Trucks

1 Answer

97 ford escort p401 code


You may have carbon plugging the passages on the intake side of the valve. Remove the valve and start the engine. It should die or run very rough. if it idles normal then you have blockage that needs to be cleaned out.

Dec 05, 2013 | Ford Cars & Trucks

1 Answer

Dodge Ram code P0402


The EGR valve is serviceable. Look up how to clean an EGR vavle, I found it on a mechanic web site they even gave the parts break down and how to clean it. Replacing it for my truck is $512 at a local parts store and even my dodge book says it can be cleaned rather then replaced.

Mar 27, 2012 | 2007 Dodge Ram 2500

1 Answer

Every time i stop at a four way stop the thing dies and i have to put the car in park and turn the key and gassing it before it starts. Please Help.


3 areas of concern are as follows:
  1. Bad MAF (Mass Air Flow) Sensor - can cause erratic idling and stalling
  2. Bad EGR (Exhaust Gas Recirculator) valve - erratic idling, skipping
  3. Bad TPS (Throttle Position Sensor) controls idle under different conditions ie cold, hot, ac etc
Your problem may be any 1 of the 3 or a combination. Best advice is to get a free diagnostic test done (most chain auto parts stores will do this test free) and come back with the error codes, These codes will help to narrow down where the exact problem lies.

Mar 29, 2011 | 1992 Saturn SC

1 Answer

I HAVE ALTIMA 99 AND MECHANIC CAN'T FIGURE OUT HOW TO SOLVE MAP SENSOR PROBLEM. HE REPLACED THE MAP SENSOR, WHICH DIDN'T HELP-'SERVE ENGINE SOON' LIGHT GETS BACK ON AS SOON AS I SHUT AND RESTART ENGINE....


He's right both and the code is the EGR valve. The car won't run with the EGR valve removed but it may be disabled some way. Most of the time EGR vales leak or the senser line stopps up. There's a small medal ine coming up the the EGR senser from the exhaust and connects to the senser this line stops up and the senser knows something aught to be happing and it doesn't so it turns the light on. Your mechanic is right it's not hurting anything but it makes the light on. It can be fixed but it'll not run much different.

Dec 02, 2010 | 1999 Nissan Altima

1 Answer

I looked up the error code in the instructions packet and it said it was P0401: Exhaust Gas Recirculation Flow Insufficient Detected.


the EGR pipe that feeds exhaust gasses to the intake manifold is clogged, you need to remove and clean out. soak in carb cleaner or use mechanical means to clean carbon and soot out of small metal pipe.

Oct 08, 2010 | 2001 Mitsubishi Galant

2 Answers

Egr valve cleaning


Usually the EGR valve problems show the fault code P0400 - Exhaust Gas Recirculation Flow Malfunction

What does that mean?
The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set.


Symptoms
No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp). However, non visible symptoms will be increased combustion temperature and increased Nox emissions.


Causes
A code P0400 may mean that one or more of the following has happened:
* Plugged EGR passage which restricts the flow of exhaust gasses
* Faulty EGR solenoid
* Faulty EGR solenoid wiring/harness
* Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
* Faulty EGR valve


Possible Solutions
Since EGR valve designs are different, no one test will suffice:
* Using a scan tool, operate the EGR valve with the engine running. If the engine stumbles, the problem was likely intermittent wiring problem or intermittent blockage problem
* If engine doesn't stumble, operate the EGR valve manually, if possible. If engine doesn't stumble and die, the ports are likely plugged. Removal of valve and cleaning of all ports will be required
* Checking of solenoid can only usually be done with a scan tool, because most solenoids operate with a duty cycle of voltage, rather than constant voltage
* Check all vacuum lines, hoses, etc for any damage
* Visually inspect the solenoid harness and the solenoid for damage
* Replace EGR valve


FOr price about this part, check this links:
- cpwstore.carpartswholesale
- autopartswarehouse

Hope this helped (remember comment and rated this).

May 08, 2010 | 1998 Suzuki Esteem

1 Answer

New egr valve installed. insufficient air flow.


EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Symptoms
You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

Causes
A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum


For several solutions ans next steps, in fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit:
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve

Hope this helped (remember comment and rated this).

May 05, 2010 | 1999 Buick Regal

3 Answers

CODE P0401 COMEING UP


I had an OBD II 401 code and fixed it by cleaning out the EGR vacuum line in the intake manifold. I removed teh EGR Valve and the set screw below it. i used a rifle cleaning brush and one length of the rod. Then I replaced teh set screw. I started teh engind and let the vacuum **** some carb cleaner through the front port hole. when it was sucking good I replaced teh EGR valve and reset the codes. That fixed it.8_26_2012_9_39_13_pm.jpg

Feb 12, 2010 | 1999 Isuzu Rodeo

1 Answer

I replaced the egr valve and the check engine light is still on so what do I do the code still says p0401


When you replaced the EGR valve did you check the EGR passage to make sure it wasn't clogged. Since exhaust gasses flow through the EGR passage carbon builds up on the walls restricting flow which can eventually lead to the code p0401 Insufficient EGR flow.

Jan 10, 2010 | 2001 Chevrolet Monte Carlo

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