Before ya'll start yelling about the search command, I've read every thing on here about DPFE, EGR, P0402, P0401, and nothing answer me question satisfactorily(sp).
So here it is. I had my codes scanned recently and came up with a P0402 EGR flow something-or-other(yes, that's exactly what it said). Tested the EGR, seems fine. I tested it by applying vacuum to the top of it and the engine shuddered. This leads me to believe the problem is my DPFE.
Is there a test for this? Or, do we just have to buy a new one and replace it?
Also, the car seems to idle a little rough in drive at about 600 RPM. It also seems a bit low on gas mileage and acceleration.
BTW, it's a 98 Sable GS.
Thanks
So here it is. I had my codes scanned recently and came up with a P0402 EGR flow something-or-other(yes, that's exactly what it said). Tested the EGR, seems fine. I tested it by applying vacuum to the top of it and the engine shuddered. This leads me to believe the problem is my DPFE.
Is there a test for this? Or, do we just have to buy a new one and replace it?
Also, the car seems to idle a little rough in drive at about 600 RPM. It also seems a bit low on gas mileage and acceleration.
BTW, it's a 98 Sable GS.
Thanks