![]() All sensors and solenoids are used to check the evap system, purge valve, tank pressure, engine manifold pressure, coolant temps, O2 sensor and catcon output. These tests are the readiness monitors that takes place during warmup and driving. Our OBD II cars self tests emissions on every drive so as long as the SES indicator stays off then most likely the emissions self tests pass. Whether you know it or not, every time the engine is started the emissions self tests are performed, long before any state inspection requires emissions tests. Never seeing the temperature needle go past the 1/4 mark is one indication of coolant temps not reaching a point in time when the pcm expects it to continue with emissions self tests. Start with the brass coolant sensor and 195F thermostat. ![]() Readiness monitors means one sensor or solenoid valve isn't operating and isn't turning on the SES indicator to tell you what went bad so lets cover the usual suspects in the order most cars fail when readiness monitors aren't ready. What says the SaturnFans forum braintrust? Sell a perfectly good car for no reason other than it won't pass an emissions test and buy a car that has a carburetor because I'm sick of technology "improving" my life. Replace with junkyard unit and get the dealer to "reflash" (what does that even mean? goddamned computer doublespeak) it to the BCU.Ģ. Other than that, the battery hasn't died, and I haven't disconnected it.ġ. You mean to tell me I haven't gone through a drive cycle in 12,000 miles? And before you ask, yes, the battery has been replaced.17 months ago, in about June of 2010. I've put 12,000 miles on my car since last year, when I had this same problem. Readiness monitors not set." The shop can't tell me, or refuses to tell me, which monitors aren't set. Only problem is mine just tells the computer "System not ready for testing. They plug the car into a computer, and if there are any codes, it fails. Once again, the time has come for my car (a 2000 SL2) to pass the Soviet Republic of Pennsylvania's emissions test.
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