Egr?
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#5
i just mechined a flat plate out of alum i think or maybe it was steel gosh that was 5 years ago maybe more.. made up a gasket from gasket material. i only removed it cause my computer was throwing a code that the ERG was dead, and well its an old carb truck it really didnt need that **** so ya... nothing changed...
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Originally Posted by ViperSpec
I was under the impression that the only time the PCM opens the EGR it is at idle and under cruise conditions, when any performance loss would be negligable and unnoticable by the driver any ways. So I personally don't really see a point to removing it either, IMHO.
You are correct. Properly calibrated, EGR is nearly or completely undetectable. It has no affect on performance driving because it is turned off at anything near WOT.
#11
Bob, if the CEL comes on b/c of a missing EGR shouldn't ALL newer rangers have an egr?
I've been halted in my header purchase by the damn thing. Why is it that some rangers have them on the drivers side and some on the passenger side. Then, there's the option of no egr at all. What gives??
I've been halted in my header purchase by the damn thing. Why is it that some rangers have them on the drivers side and some on the passenger side. Then, there's the option of no egr at all. What gives??
#13
Originally Posted by l2en
Bob, if the CEL comes on b/c of a missing EGR shouldn't ALL newer rangers have an egr?
I've been halted in my header purchase by the damn thing. Why is it that some rangers have them on the drivers side and some on the passenger side. Then, there's the option of no egr at all. What gives??
I've been halted in my header purchase by the damn thing. Why is it that some rangers have them on the drivers side and some on the passenger side. Then, there's the option of no egr at all. What gives??
A stock 2003 4.0 Ranger doesn't have EGR at all. So you can buy the headers made for no EGR or you can buy them for EGR and cap the port on the collector.
Manufacturers install EGR when it's needed to pass emissions and leave it off when it isn't. I don't know how to explain the lack of EGR on 2003 4.0's when the 02 and 04 have it. The cats or something else may be different. Lots of stuff in the engine/exhaust hardware and in the calibration can be juggled to meet emission requirements. There is not just one unique "formula" that gets it there.
The calibration strategy allows the EGR and its OBDII monitor to be turned off when the hardware isn't present. Each year/engine/trans/etc has a unique calibration burned in the PCM so it isn't a problem to turn it on or off in any particular year or powertrain combo.
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#15
Originally Posted by rwenzing
EGR is active only at part throttle under moderate load. It is turned off both at idle and at high load conditions.
You are correct. Properly calibrated, EGR is nearly or completely undetectable. It has no affect on performance driving because it is turned off at anything near WOT.
You are correct. Properly calibrated, EGR is nearly or completely undetectable. It has no affect on performance driving because it is turned off at anything near WOT.
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skillzo1
OLD - Engine & Drivetrain
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01-17-2012 01:27 PM