1997 S10 Blazer LS 4.3 V6 4-door
4wd, in New Jersey USA.
I'm overdue to state inspection. I keeps failing for OBD-II readiness (not ready).
I've got an AutoXray EZscan 5000 and find that the darn truck
is messed up!
Readiness tests results change frequently It's like the ECU is losing it's data, but it never loses power. I haven't disconnected the battery nor cleared the codes.
My Readiness tests results:
MIL Status: OFF
Misfire Monitor: Completed (always)
Monitor: Completed (always)
Comp. Component: Completed (always)
Catalyst Monitor: Not Completed **
Heated Catalyst: Not Supported
Evaporative System: Not Completed **
2nd Air System: Not supported
A/C Refrigerant: Not Supported
: Completed *
O2 Sensor Heater: Completed *
EGR System: Not Completed ***problem***
* = These tests are complete shortly after driving about 10 miles, but reset to not completed after every shutdown and restart.
** = These tests go complete after a long trip (100+ miles), but reset to not completed after shutdown and restart.
*** = The EGR System NEVER comes ready.
I've never had this problem before with the OBD-II not ever coming ready. The truck is a little hard starting, especially when the engine is warm. It starts up better the colder the weather is.
So, with this limited information, can anyone give me any direction? Is my ECU possibly cooked? Should I diagnose an EGR problem? Is it normal for so many of these tests to reset when restarting the engine? If that's true, I'll never pass inspection - 'cause they shutdown the engine to hook up the computer, then restart and monitor.
Any chance this is a common problem with these trucks
Help - please - I'm desperate at this point.