because the intake is probaly clogged up with carbon deposits not letting exhaust gasses back through the intake.
Over 5000$
P0401- Exhaust Gas Recirculation insufficient flow. Probably need to clean or replace your EGR valve located on the back of your intake.
where is the pcv valve locate on 95 Honda passport
need to replace the fast idle valve. they are only located a the dealership.... good luck need to replace the fast idle valve. they are only located a the dealership.... good luck
Check the intake and exhaust manifolds around the EGR valve. There may be enough carbon buildup to prevent free flow of gasses.
how do you replace the expansion valve
yes
That's your EGR valve flow is insufficient. Replace the EGR valve.
How much does it cost parts and labor to replace a valve cover gasket on a 1990 Honda Accord 4door.
== == First off Your Honda is really an Isuzu Rodeo, but you already knew that. These have the GM electronic egr. if you have the 3.2 motor. The only way to fix it is to replace the egr valve.
Code P1491 Means: EGR Valve Lift Insufficient Detected EGR Valve needs to be replaced
Insufficient EGR (exhaust gas recirculation) valve. Suggest you replace the valve.