BECOME A MEMBER
Sign up with Facebook
I agree to the
Login with Facebook
NOT A MEMBER?
How can I tell if my EGR vacurm modulator is working or not.I Thank You
1996 TOYOTA COROLLA
I have a PO401 code. I have checked egr valve with vacurm tester and it is holding vacurm.
have the same problem?
Monday, May 28th, 2012 AT 6:49 PM
I would remove the valve and make sure you have vacuum and exhaust present at the valve.
You need to verify the solenoid is working correctly and if it is getting the correct signal from the pcm.
The modulator need to be checked as well but I would look at this last to make sure the rest of the system is working correctly.
Please consider a donation if we helped you
Monday, May 28th, 2012 AT 6:53 PM
to post a reply.
Related EGR Valve Questions
Code Po401, Checked Egr Valve W/vacurm Tester, Holding...
Checked Egr Valve Working Fine
How Do I Check To Know If My Egr Valve Transducer Is...
Have A Po401 Code And Alreadly Checked Egr Valve, Working Fine.
How Do I Check My Vacurm Switching Solenoid (for My...
Have Checked Egr Valve, And Have No Vacurm Leaks Also.
Is There A Egr Valve On My Toyota Corolla Ae101 4afe 1993 Model Automatic Transmission
Ask a Car Question. It's Free!
EGR Valve Test
Is it Safe to Drive Check Engine Light
Read Codes Like a Pro
Find a car manual for your car
© 1999 - 2017 2CarPros, Inc.