I've heard that egr valves can go bad but not throw error codes, is this right? Anything to look for and anything you can do preemptively to keep them good, or do they just have a lifespan?
 
I've heard that egr valves can go bad but not throw error codes, is this right? Anything to look for and anything you can do preemptively to keep them good, or do they just have a lifespan?
Depends on the model of car. Best way to keep the EGR valve good on the P38 is to remove the vacuum pipe from the actuator.
On newer models that cannot be done as the have feedback so the ECU knows that the valve is not operating and will throw a fault code.
 
I've heard that egr valves can go bad but not throw error codes, is this right? Anything to look for and anything you can do preemptively to keep them good, or do they just have a lifespan?
Normally they'll throw a code someway as the airflow meter waits for the airflow to drop when the egr valves open. Also egr valves also have position sensors which give away its position of they get stuck and chew the gears..
 
They go like bugger when done right:cool:
There's a guy on pootube called juice motors that does defenders all day long. He knocks out some smart machines :)
It goes like brown stuff off a shovel but blew an injector out soon after the re-map. Not sure why anyone wants that much performance in a Defender though, noisy and uncomfortable compared to the P38.
 

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