Search results

  1. M

    1994 OBD1 FZJ80 idle problem/02 sensor over and over.

    I had a very similar rough idling problem and replaced the coolant temperature sensor. It's been a couple of weeks and I have not seen this problem so far. I first replaced with a non-Toyota sensor (~$10) and the engine kept stalling just once in the morning right after the first start up...
  2. M

    Ssc 1993/1994 land cruiser o2 sensor

    Unlike NTK parts, the Denso part had a Toyota stamp and part number on it as well as a NTK stamp. You can see them in attached pictures. A Rockauto sales suggested that I should use a Denso also. Although Denso O2 sensors for 94's are made by NTK (NGK), there may be some differences. I'm not...
  3. M

    Ssc 1993/1994 land cruiser o2 sensor

    Are you getting some error codes? I purchased a Denso sensor(234-4520) as well as NTK's(NTK24044 and NTK24080) and one from Toyota 89465-69125. Although the Denso sensor came in a Denso box, the sensor inside the box had the "NTK" stamp on it. I returned it but I believe it was the NTK24044...
  4. M

    EGR VSV testing

    There have been a few people reporting a problem with the EGR VSV intermittent failure. So, I decided to replace the VSV and removed the intake plenum. While I was installing a new VSV, I notice that one end of a short 5mm line is off a tee connector. A close inspection revealed that both...
  5. M

    94 tlc Bank 1 and 2 o2 sensor difference

    I checked wiring. Connectors are all original and in good shape. I did continuity test on all 4 signal wires (2x2 sensors) from connectors to the ECM. Checked heater circuit voltage and they are in spec. I get the error code 28 after engine gets hot/normal operating temperature. The vehicle...
  6. M

    94 tlc Bank 1 and 2 o2 sensor difference

    Thanks for mentioning that. Yes, I read that somewhere on the forum and I actually bought the NTK24044, 24080 and Toyota's 89465-69115. The NTK 24044 in bank 1, the NTK24080 in bank 2 seem to give me the best rides. The 69115 in bank 2 is also okay. Both combinations still give me the error...
  7. M

    94 tlc Bank 1 and 2 o2 sensor difference

    Wiring lengths are slightly different as well as sleeves for the wires. The finish of the 24080 looks identical to Toyota sensors. You can buy a 24080 for less than $100 from Amazon. I do not know how to check the voltage pattern. Do I need an oscilloscope?
  8. M

    94 tlc Bank 1 and 2 o2 sensor difference

    I replaced a bad bank 2 sensor (heater circuit had less than 1 ohm) with the NTK24044 on my 94 after I got the error code 28. With the NTK 24044 installed I found that the vehicle did not run well (rough and poor acceleration). I replaced the NTK24044 with the NTK24080 and the vehicle runs...
  9. M

    Replacement of the VSV (in Spanish)

    Hi, I have a 94 and I'm having a tough time loosening the forward 12mm bolt for the VSV mount bracket. Would removing just the throttle body allow for loosening this bolt? I'm hoping that I can replace the VSV with only removing the throttle body. It's been a while but if you remember, please...
  10. M

    EGR VSV testing

    Hi, I'm testing the VSV on my 94 LC per FSM because I'm getting the error code 28 after driving a few miles. The vacuum gauge is T-connected between the EGR modulator and valve. When I test with hot engine, the vacuum gauge does not move at 2500 rpm with vehicle parked although the procedure...
  11. M

    The FSM Oxygen Sensor Test

    I have a question. Did your CEL for E28 come on right after you turn on the engine or after driving a few minutes?
  12. M

    EGR temp sensor tested open. Bad?

    I just replaced the EGR temp sensor on my 94 that had an open circuit. I must have damaged it when I replaced the EGR valve. One lead came loose. I was hoping that the new sensor will get rid of error code 28 (B2 oxygen sensor) on my 94, but the code 28 is still there. I measured my new...
  13. M

    The FSM Oxygen Sensor Test

    That's great! Nice work! Unfortunately, I'm still fighting my error code 28.
  14. M

    The FSM Oxygen Sensor Test

    Are you still working on the error code 28? Are these O2 sensor wires in your photo?
  15. M

    Checking VSV for the EGR without removing the VSV itself

    Thanks for your suggestions. I was able to test the VSV per FSM procedure. Funny thing is that the VSV does not turn ON/OFF at all unless the vehicle is being driven. Maybe the gear has to be engaged or something. At any rate I observed that the vacuum comes on and off at the EGR valve while...
  16. M

    Checking VSV for the EGR without removing the VSV itself

    Thanks, it seems that the condition is complex.
  17. M

    Checking VSV for the EGR without removing the VSV itself

    Thank you for posting this test method. The VSV on my 94 tested good that saved me time and hassle of removing. However, I'm still getting the error code 28. Can someone tell me if I should be seeing a vacuum between the EGR valve and VSV when engine is hot? I see no vacuum with a vacuum...
  18. M

    Ssc 1993/1994 land cruiser o2 sensor

    As an owner of a '94 myself, I feel bad for the chunk of change you are about to spend on o2 sensors, which are different for 93-94. Denso, Toyota, or forget it. Bosch is a 4 letter word around here. NGK gets muttered about in the shadows. I also have a 94 and I'm wondering if your comment is...
  19. M

    1994 Fj80 Code 26, running rough, and Oxygen sensor wiring

    When I installed second NTK on bank 2, my LC started to drive very slow like missing a couple of cylinders although still smooth. I thought I got a incompatible NTK. Is the NTK 24044 correct model? My LC runs better with the wire disconnected, so I figured the sensor is sending wrong...
  20. M

    The FSM Oxygen Sensor Test

    Have you checked this thread below in this forum? He seemed to have a similar error code like you do. "1994 Fj80 Code 26, running rough, and Oxygen sensor wiring" https://forum.ih8mud.com/threads/1994-fj80-code-26-running-rough-and-oxygen-sensor-wiring.816576/
Top Bottom