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1990 chevy lumina 3.1 ltr runs for 5 mins, then guits, codes 32 & 43 says 02 sensor, check circuit fuse a relay could be defective, and check circuit wiring, Where is the fuse for the 02 sensor located and the relay ? also where is the wiring for the 02 sensor located ?
I would check back pressure to Catalytic converter. Sounds like it could be plugged off. You have to plumb a gauge ahead of the converter and check the back pressure.
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Sounds like low fuel pressure. Check your fuel pressure. If you have the 3.1 liter engine and just turn the key to the "on" position you should have around 41 - 47 PSI. When running it should have about 31 - 44 PSI. If you have the 2.5 liter engine you should have 26 - 32 PSI of pressure when running. I hope this helps and good luck.
P0030 = HO2S Heater Control Circuit (Bank 1 Sensor 1) - No.1 Heated Oxygen sensor on bank 1.
P0036 = HO2S Heater Control Circuit (Bank 1 Sensor 2) - No. 2 Heated Oxygen sensor on bank 1
For both of these to trigger on the same bank, means most likely an Open or Short to Ground condition (somewhere on the Bank 1 circuit) stopping the HO2 sensors from reaching their working temperature.
Check the following in this order:
1) Using a multimeter, check 'continuity' of the Oxygen circuit FUSE terminals (don't rely on visual inspection alone) or replace fuse with a known good one.
2) Check for moisture getting into both oxygen sensor connector terminals (bank 1).
3) Check for good connection at Oxygen sensors (bank 1).
3) Have both heated oxygen sensors on Bank 1 tested (ensure their values are to specification).
4) Check HO2 pin-outs of the PCM for correct voltage.
Only replace the HO2 sensors as a last resort (if out of spec).
Then engine department relay centre & fusebox location is behind the washer bottle, but I believe the HO2 sensors are connected direct to the PCM, not a relay.
Cheers,
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code 12 flashes any time trouble codes are pulled without the car running. It is normal and think it has something to do with not receiving distributor pulse.
Code 21 has to do with the TPS (throttle position sensor) voltage being to high. You'll need a DVOM (digital volt ohm meter) to check this out. Unplug the TPS sensor and check for 5volts on the grey wire, and make sure the black wire has a good ground. If those check out plug the sensor back in. Back probe the blue wire. you should see around .5 volts with the throttle closed. The voltage should go up smoothly as you slowly open the throttle. At wide open throttle the voltage should be around 4.9 volts. If any of the above three are not true I would suspect a bad throttle position sensor.
here you go hope it helps,dont forget to vote on answer thanks
88–95 3.0L (Except Monaco, Premier & Stealth), 3.3L, 3.5L & 3.8L Engines
11
Engine Has Not Been Cranked Since Battery Was Disconnected{4}
No Crank Sensor Signal During Engine Cranking{3} 12
Memory Standby Power Recently Lost 13
MAP Sensor Pneumatic Circuit 14
MAP Sensor Electrical Circuit 15
Vehicle/Distance Sensor Circuit 16
Loss Of Battery Voltage Sense 17
Engine Running Too Cool 21
Problem In Oxygen Feedback Circuit 22
Coolant Temperature Sensor Circuit 23
Charge Temperature Sensor Circuit 24
Throttle Position Sensor Circuit 25
AIS Motor Drive Circuit 26
Injector Current Limit Not Achieved 27
Injector Driver Interface Circuit{1}
Injector Control Circuit{2} 31
Purge Solenoid Circuit 32
EGR Diagnostics 33
A/C Cutout Relay Circuit Or A/C Clutch Relay Circuit 34
Fault In Speed Control Solenoid Driver Circuit 35
Fault In Fan Relay Circuit 37
Part Throttle Unlock Solenoid Driver Circuit 41
Fault In Charging System Or No Field Current 42
Fault In ASD Relay Driver Circuit 43
In Ignition Coil Control Circuits 44
Lose Of FJ2 To Logic Board 46
Battery Voltage Is Too High 47
Battery Voltage Is Too Low 51
Lean Condition Is Indicated 52
Rich Condition Is Indicated 53
Internal Problem In Module 54
Fault In Distributor High Data Rate Pickup Circuit{1}
No Sync Pickup Signal{2} 55
End Of Message 62
Unsuccessful Attempt To Update EMR Mileage 63
Fault Error{1}
Controller Failure EEPROM Write Denied{2} 65
Manifold Tuning Valve 66
CCD Bus System 77
Speed Control Relay Circuit
{1}—1988–91 models. {2}—1992–95 models. {3}—1990–95 models. {4}—Neon.
If you need more just ask Thanks Db
Definition Secondary Air Injection System fault Explanation The air injection system is monitored for faults Probable Causes 1) Circuit relay defective or fuse open 2) Check connector and wiring 3) AIR pump defective or hoses blocked
P0128 Fault Code Definition
Engine temperature has not increased and/or reached the correct level within a specified amount of time after engine startup
that fuse feeds power to fuel pump relay circuit that feeds pump could be defective pump,or damaged circuit wires that shorts out! and not a good idea to put higher fuse in circuit could cause more damage to circuit! but i know when your stuck, u do what it takes,so inspect circuit related to fuse,
trying to find all locations of 02 senors
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