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90 isuzu trooper i-tec stalling

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waldow777
New User

Nov 7, 2010, 5:13 PM

Post #1 of 4 (4840 views)
90 isuzu trooper i-tec stalling Sign In
Ok. I just bought this old trooper and in ran good on the test drive. 50 miles later it started to spit and sputter while loosing power. Check engine light came on then went off. So I turn the key off and back on. It runs perfect for a while, then the same thing again?
The battery, plug wires, cap and rotor and plugs are all new. What resets when the ignition is turned off then back on?

Any help would be greatly appreciated....


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 7, 2010, 5:22 PM

Post #2 of 4 (4831 views)
Re: 90 isuzu trooper i-tec stalling Sign In
Have the codes read first.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



waldow777
New User

Nov 8, 2010, 2:20 PM

Post #3 of 4 (4812 views)
Re: 90 isuzu trooper i-tec stalling Sign In
Im getting a code 4 and 12. What do they mean? I got the codes by connecting the two wires under coin tray together.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 8, 2010, 2:27 PM

Post #4 of 4 (4808 views)
Re: 90 isuzu trooper i-tec stalling Sign In
The code 12 flashes at the start and the end and 4 is not a legitimate codes.





TROUBLE CODE IDENTIFICATION

CODE 12 Indicates that on-board diagnostics are functioning when diagnostic leads are connected and ignition is "ON" (engine not running). Code not stored in memory.
CODE 13 Oxygen sensor defective or open circuit.
CODE 14 Shorted coolant sensor circuit.
CODE 15 Open coolant sensor circuit.
CODE 21 Both idle and wide open throttle "ON" simultaneously in throttle valve switch.
CODE 22 Open or shorted starter signal circuit.
CODE 23 Shorted power transistor output terminal.
CODE 25 Open or shorted circuit for pressure regulator VSV.
CODE 26 Open or shorted circuit for canister VSV.
CODE 27 Open in ECM driver transistor for canister VSV.
CODE 32 EGR gas temperature sensor malfunction.
CODE 33 Open or shorted circuit in fuel injector harness, dropping resistor or inside ECM.
CODE 34 EGR gas temperature sensor or wiring faulty.
CODE 35 Ignition power transistor harness open circuit.
CODE 41 Crank angle sensor open circuit or faulty signal.
CODE 43 Throttle valve switch idle contact continuously "ON."
CODE 44 Lean signal from oxygen sensor.
CODE 45 Rich signal from oxygen sensor.
CODE 51 Abnormal ROM in ECM micro computer.
CODE 52 Abnormal RAM in ECM micro computer.
CODE 53 Open in ECM driver transistor for pressure regulator VSV.
CODE 54 Defective ignition power transistor or grounding system.
CODE 61 Shorted or broken air flow sensor hot wire.
CODE 62 Broken air flow sensor cold wire.
CODE 63 Open or shorted wiring or defective vehicle speed sensor.
CODE 64 Open in ECM driver transistor for fuel injectors.
CODE 65 Wide open throttle contact in throttle valve switch continually "ON."



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Nov 8, 2010, 2:29 PM)





 
 
 






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