I still have a check engine light. Stays steady while driving highway speeds. Blinks while in park, at an idle or driving below 35mph. The van will run rough when cold or while warming up, but once it has ran for about an hour or so or has been taken on a couple short trips, I still have the light but it runs while with very minimal vibration but the light is still there.
I have tried replacing: plugs, wires, coil pack, oil & filter,fuel injectors, fuel rail, fuel rail wiring harness, MAP sensor, cleaned out the EGR (think it might be shot. Stock with 137,000 miles), throttle position sensor, valve cover gasket and spark plug tube seals, transmission fluid and filter, engine coolant flushed.
I know the parts changed where over kill but I figured while narrowing it down I might as well replace what I can while Im working on it.
Even after all of this I have a check engine light solid and still blinks in idle or at low speeds. I still have a (P0304) code and a pending P0304 code on my code scanner.
Does anyone think a burnt out oxygen sensor could cause something like this? maybe I burnt my cat converter out? I have a feeling it is the EGR because I was told it stays closed at idle but while driving at higher speeds and RPMS it should open and release. COuld it be choking out the nearest cylinder with back preasure?
I was told to compression test the motor, as well as preasure test the fuel line. I plan on doing this when I get paid on Friday if I have extra cash.
Any tips, suggestions, past experiences, advice, anything would be helpful. Thanks in advance guys and girls and sorry for writing a novel, but it was my dads van and Id like to keep it going as long as possible as he passed away in June.
I have tried replacing: plugs, wires, coil pack, oil & filter,fuel injectors, fuel rail, fuel rail wiring harness, MAP sensor, cleaned out the EGR (think it might be shot. Stock with 137,000 miles), throttle position sensor, valve cover gasket and spark plug tube seals, transmission fluid and filter, engine coolant flushed.
I know the parts changed where over kill but I figured while narrowing it down I might as well replace what I can while Im working on it.
Even after all of this I have a check engine light solid and still blinks in idle or at low speeds. I still have a (P0304) code and a pending P0304 code on my code scanner.
Does anyone think a burnt out oxygen sensor could cause something like this? maybe I burnt my cat converter out? I have a feeling it is the EGR because I was told it stays closed at idle but while driving at higher speeds and RPMS it should open and release. COuld it be choking out the nearest cylinder with back preasure?
I was told to compression test the motor, as well as preasure test the fuel line. I plan on doing this when I get paid on Friday if I have extra cash.
Any tips, suggestions, past experiences, advice, anything would be helpful. Thanks in advance guys and girls and sorry for writing a novel, but it was my dads van and Id like to keep it going as long as possible as he passed away in June.