This is topic Help on a Check Engine light in forum Tech Talk at Northern California Ford Owners  .


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Posted by icyelle (Member # 2720) on :
 
I have a 1996 Ford Explorer XLT, 5.0L V8, ALL WHEEL DRIVe, 100,400 miles.

The "check engine" light recently came on. I bought an OBD II scanner to determine what is causing the problem and it gave me a P401 code. I consulted the Chilton service manual for the car and it said it has something to do with the exhaust emission. Help!

I live in the southbay - san jose and looking for a mechanic to check this problem out. I don't want some mechanic to rip me off since I am a female I have had experience with this. Please send information on a credible mechanic in the south bay that will be able to help me resolve this problem.

Thanks - I appreciate any help.
[Confused]
 
Posted by shade-tree (Member # 298) on :
 
I'm guessing IAB needs to be cleaned or the EGR valve is sticking (needs to be cleaned as well) pretty typical 60k mileage items...
 
Posted by st5150 (Member # 51) on :
 
Can you give us exactly what chilton's says the error is?
 
Posted by TheBrain (Member # 35) on :
 
Code P0401...Exhaust Gas Recirculation (EGR)Insufficient Flow Detected

Need to disconnect the EGR solenoid and make sure it is getting at least 10" vacuum @ idle
Check the hoses from the solenoid to the valve for cracks, kinks, blockage, etc....
Apply vacuum to EGR valve @ idle and make sure the idle speed drops at least 100rpm
The list goes on and on

I am a mechanic but I am in the North Bay

Good Luck
Brian
 




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