Does the 2.3 dohc (2002) have an egr self-test – ford ranger forum gas nozzle prank

If the inferred ambient temperature is less than 32 oF, or greater than 140 oF, or the altitude is greater than 8,000 feet (BARO < 22.5 "Hg), the EGR monitor cannot be run reliably. In these conditions, a timer starts to accumulate the time in these conditions. If the vehicle leaves these extreme conditions, the timer starts decrementing, and, if conditions permit, will attempt to complete the EGR flow monitor. If the timer reaches 500 seconds, the EGR monitor is disabled for the remainder of the current driving cycle and the EGR Monitor I/M Readiness bit will be set to a “ready” condition after one such driving cycle. Starting in the 2002 MY, vehicles will require two such driving cycles for the EGR Monitor I/M Readiness bit to be set to a "ready" condition.

Note: A few 2001 and 2002 MY vehicles do have the above-described bypass logic. If an EGR malfunction is detected below 32 oF, and the EGR system/monitor has been disabled, the EGR Monitor I/M Readiness bit will retain its current status (possibly "not ready" if DTCs had been recently erased).”

I did a clutch job (trans out, batt disconnected, etc) and the P1000 code was gone within 20 minutes of driving. I wasn’t aware of it at the time, but apparently my gas cap wasn’t sealing properly- not sure why I didn’t get a fuel cap light or CEL for evap.

Anyways, I went to do my inspection and they informed me they would have to fail me (because of the gas cap) unless I went and got a gas cap right away. No reason to believe they were lying- they didn’t have a gas cap to sell me anyways. They told me I could go get a new one and they wouldn’t enter the failure. Came back with a new cap and they had no issues and passed my truck.

The reason for me telling you all this is this: on my emissions printout all of my tests (Catalyst, EGR, o2, etc) were "Ready" and complete *except* my evaporative emissions test ("Not Ready"). Since I hadn’t even put 3 miles on it since replacing the gas cap, the truck hadn’t had a chance to complete that test (and couldn’t before since the cap wasn’t sealing… I presume). In my area, a vehicle can have one and only one "Not Ready" and still pass emissions- though no CEL is allowed.

As for why the EGR test says not available, I would try a different scanner. You can get a bluetooth dongle and use a laptop with Forscan for cheap. Or even stop by a parts house and have them use theirs- they may be able to tell you what it says on their scanner. Check too for pending codes- you may have a pending EGR code and thus the ECM reasons it cannot do that self-test. The system itself is pretty simple- its an electric stepper motor design egr valve, and it is controlled by the ECM which makes its EGR position decisions based on a number of factors… chief among them input from the MAP sensor which loves to get clogged with crap from the PCV dump off (it literally is mounted right in front of where the PCV hose connects to the manifold).

The one really strange thing is that you’ve done a hundred miles over many drive cycles and still have none of the tests complete. I’ve had my battery cable disconnected plenty of times, and I don’t think its ever taken more than 30-40 miles to clear P1000. I would take it out to a freeway and cruise it for 30 minutes, then run it to a busy street with plenty of lights for 30 minutes, and then check to see if any tests have completed. Let us know what happens!