Q: Car stalls and P0401 insufficient egr flow

asked by on

When in Drive, my car tries to stall and sometimes does stall and tries to move forward. It stops once it has warmed up and driven several miles. There was a P0401 insufficient egr flow, but I removed the egr valve and it’s cleaned, plus also checked the intake manifold & it’s clean and we replaced the vacuum hose. Then I ran a wire down the egr pipe and it’s clear too. When this problem first happened, I thought it was the tranny and I went to an auto store where they told me the car was getting P0401 and that it should be fixed. Tried a 2nd auto store and they said the same, to get it fixed. More details for you: Within a month, after removing the fuel injection body, I cleaned out as I got a code for the position sensor on that - solved that. I used a synthetic oil to perform an oil change, as I’ve done other times too. Also a month ago, I replaced the spark plugs. I’m out of a job right now, so I need to find a way to fix this myself so I don’t have to ride my motorcycle in 100 degrees to go to job interviews. Please, can you tell me how to fix this stalling problem?

The P0401 code is for low EGR flow, but would not be the cause of the stalling if the flow was too low. You also state the problem is when the engine is cold and goes away after it is warm. The EGR system does not start working until the engine is warm.

It sounds like you are having a problem with the transmission or torque convertor. Have a mechanic that knows transmissions check the vehicle when it is cold to see if the engine or transmission is the problem. Sometimes the transmission seals will leak internally causing these problems until the fluid warms up. If you want to have this checked, a technician can diagnose your Check Engine Light and stalling issue thoroughly to determine what repairs will resolve your car problems.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car stalls and P0401 insufficient egr flow

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: PO341 code - cruise control kicks off, engine light and vsa lights go on.

There could be an issue with the cruise control switch and the brake switch. The VSA light refers to the brake system and the light maybe coming on for the brake switch not functioning properly causing the cruise control switch...

Q: Q: Fuel pump

It sounds like you may have a faulty fuel pump that may have been damaged as a result of running it out of fuel. As you may know, today's fuel pumps require the fuel to keep them cool and lubricated....

Q: 99 nissan altima jerking and cuts off but no check engine light

You may be having an issue with the EGR control solenoid sticking or not venting the EGR system and causing the problem. I would suggest to disconnect the solenoid and road test to see if problem goes away? If it...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...