04-13-2018, 01:52 AM
that switch under the dash , the nag switch on FEDeral USA cars only, not calif, not canada market.
is a timer, switch only. but is ok now, CEL codes not not frozen.
53 means you are :
1: RUNNING The calif ECU in a Federal body. (seems not)
2: or the EGR EGRT thermal sensor is missing , all 95 cars i think have the EGRT sensor.
3: or the EGRT, sensor wires fell off the same.
4: radical answer, running federal harness in a calif. car.
5: the firmware is corrupted, as in bad ECU.
This is easy to figure out.
open the hood, look up, see that USA white mandated sticker there (even shows spark gap) and advance timing? degrees. bingo.
see the words on the bottom text there, words CALIFORNIA there, then it is a CAL car, if not its a FED car.
now we know what it was new day one.
58B40 means, FED ECU (e03 code) 92,93 only car, automatic. only. and is missing the IAT sensor used next year and all years newer.
so someone put in the wrong ECU.
there are 2 ways the ECU knows its in the wrong car,
1: EGR MISSING. EGRT sensor.
2: or the CALIF ground pin missing, B1 or B2?
think this is your issue.
did you look at the EGR main first. (rear of intake, see intake tunnel 4 rear, see that EGR there?
see if the sensor is there, and the 1 wire attached?
if the wire dangles there, and no EGRT sensor present , just ground the wire with any 10,000 ohm resistor, brown,black,orange bands. this ends 53s. in 99.9% off all cases.
is a timer, switch only. but is ok now, CEL codes not not frozen.
53 means you are :
1: RUNNING The calif ECU in a Federal body. (seems not)
2: or the EGR EGRT thermal sensor is missing , all 95 cars i think have the EGRT sensor.
3: or the EGRT, sensor wires fell off the same.
4: radical answer, running federal harness in a calif. car.
5: the firmware is corrupted, as in bad ECU.
This is easy to figure out.
open the hood, look up, see that USA white mandated sticker there (even shows spark gap) and advance timing? degrees. bingo.
see the words on the bottom text there, words CALIFORNIA there, then it is a CAL car, if not its a FED car.
now we know what it was new day one.
58B40 means, FED ECU (e03 code) 92,93 only car, automatic. only. and is missing the IAT sensor used next year and all years newer.
so someone put in the wrong ECU.
there are 2 ways the ECU knows its in the wrong car,
1: EGR MISSING. EGRT sensor.
2: or the CALIF ground pin missing, B1 or B2?
think this is your issue.
did you look at the EGR main first. (rear of intake, see intake tunnel 4 rear, see that EGR there?
see if the sensor is there, and the 1 wire attached?
if the wire dangles there, and no EGRT sensor present , just ground the wire with any 10,000 ohm resistor, brown,black,orange bands. this ends 53s. in 99.9% off all cases.
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