Close
Egr insufficiant flow
1999 Ford F-150

EGR INSUFFICIANT FLOW

(1999 Ford F-150)
IVE CHANGED EGR VALVE, SOLENOID,AND SWITCH CLEANED PORTS PULLED EGR LINE TO EXHAUST ALL CLEANED AND CLEARED STILL GIVING ME OB II CODE 401 INSUFFICIANT FLOW WHAT DID I MISS?
4 answers & 0 comments
Popular Answer
on March 16, 2010
Here is a good detailed article about the p0401 DTC: http://repairpal.com/OBD-II-Code-P0401-Ford-Ranger
Sign in to reply
General Diagnosis
$88 - $111 Learn More
on March 16, 2010
Here is a good detailed article about the p0401 DTC: http://repairpal.com/OBD-II-Code-P0401-Ford-Ranger
Sign in to reply
I removed the EGR valve then started the engine and sprayed carborator cleaner into the intake were i removed the EGR. This helped, the service engine light went out and i got through inspection. Later the light came back on. I've been told that the only way to permanently correct the problem is to remove the intake manifold and clean the port.
Sign in to reply
my wifes car would not pass emissions with this same prob. the EGR tube was plugged almost completely and it needed a new gas cap to seal the system. i had to pull a drill out to clear the tube.
Sign in to reply
dude we both have a same problem i already changed the 3 part that we supposted change including the e g r valve and i still have same shit problem i dont know what to do.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My check engine light came on the so i took it to auto zone they got a code p0401 and told me its the egr valve so i...
I had a leaking coolant on plastic coolant bypass outlet on my mazda cx5, at the same time engine warning light came...