Resetting the code: those instructions miss one critical detail, the fact that the serial link plug to disconnect is in fact under the glove box. Remove the cardboard panel (carefully) and you will see an off white plug with only a couple if wires if I remember correctly. This is the one you disconnect in the routine you describe.
OBD1 is a very simple system. The codes you get under the seat are all that it provides. (If I am wrong here, someone please correct me.) Simple for some is good, you don't run in the problems an OBD2 system has when something goes wrong.
The code 44 is oxygen sensor left bank, code 45 is right bank. These sensors sense the oxygen content of the emission, and the ECU uses this info (in combination with other sensors) ossillating from rich to lean multiple times per second. If the sensor gets into a closed loop, signalling rich or lean all the time, the code is set. It needs a full minute of a closed loop to trigger the code, so this is not accidental. This is a common code to get and rarely is the sensor itself. Could be something really simple like wrong octane gas (I use 89 gas, 92 gives me code 44 and 45 everytime), not closing the gas cap properly.. Check the easy stuff before you get it diagnosed, 99% of the time it is that simple.
Last edited by vray : 08-05-2005 at 02:23 PM.
Reason: More info added...
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