My 1997 chevy blazer failed inspection because the obd is malfunctioning. I'm trying to find the location of the on board computer to see if I can swap it out myself. I would really like to stay away from the dealership $$$$$ can you help me?

OBD is on board diagnostics. If you have a check engine light on in NY(does not include upstate) your car cannot be inspected until either the codes are cleared and a drive cycle is completed or the fault is repaired. A drive cycle will allow the computer to do self tests on the various systems...ex: catalytic converter, O2 sensors, EVAP systems, engine misfire. Depending on the fault code, it may be a simple or expensive repair. Is or was your check engine light on and what are the codes stored? Find out at a local shop or some auto parts stores can access your computer and tell you

I am only guessing but it seems to me an ECU that can't remember anything is probably faulty.

Inside the ECU or ECM, the brain, the computer can be divided into sections like the circuit board of a radio or a laptop. There will be voltage regulators, an obd interface, a memory for the fault codes and a memory for recent history and a memory for the learned settings. There will be a memory for the preprogrammed settings and drivers for the ignition and injection system and an active computer making sense of the sensor information in order to make constant adjustments.

Just as with most things built on a single circuit board they rarely fail en masse. Usually what happens is just one of the on-board systems fail even though the result for practical purposes is the same as if the whole thing frazzled.
Usually When an ECU fails it is one of the essential functions which leaves no doubt it must be replaced but it isn't inconceivable that any section could fail - even one or more of the memory sections...

P0101 is the Mass Air Flow Sensor error,
http://www.obd-codes.com/p0101


P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature

Causes: A code P0440 could mean one or more of the following has happened:
* The gas cap is not installed or working properly
* The purge solenoid has failed
* The canister is plugged and not working properly

Possible Solutions: With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
* Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
* Inspect the EVAP system for cuts/holes in tubes/hoses
* Inspect for damaged or disconnected hoses around the Evap purge solenoid
* Check and/or replace the sensor
* Check and/or replace the purge valve
* Have a professional use a smoke machine to detect leaks

Hope helps (remember to rate this).

DTC P0340 - Camshaft Position Sensor Circuit Malfunction
Symptoms can include:

• Hard starting or no start
• Rough running / misfiring
• Loss of engine power

Causes:A code P0340 could mean one or more of the following has happened:

• a wire or connector in the circuit could be grounded/shorted/broken
• the camshaft position sensor may have failed
• the PCM may have failed
• there exists an open circuit
• the crankshaft position sensor may have failed

Possible Solutions:With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

• Visually inspect all the wiring and connectors in the circuit
• Check for continuity in the circuit wiring
• Check the operation (voltage) of the camshaft position sensor
• Replace the camshaft position sensor as required
• Check the crankshaft position circuit as well
• Replace circuit wiring and/or connectors as required
• Diagnose/replace the PCM as required

DTC P0320 also have with this wrong.

I don't believe there is a recall but I've replaced a lot of the wiper control modules [glorified circuit board] on top of the wiper motor for similar problems. Something in the circuit board goes bad and causes the wipers to malfunction randomly. There are other things that can cause wipers not to work but I'd look there first

In the glove box behind a plastic panel. There are 3 relays in there. The fuel pump is the one closest to the drivers side.

I have the same problem, how did you get it fixed?

Hi, a P0446 means Evaporative Emission Control System Vent Control Circuit Malfunction

Full details @ http://www.obd-codes.com/p0446

97 don't have carb that year its TBI injection . Inspect/fuelpump relay/pressurereg.switch/pump/filter