Question about 1995 Nissan Maxima

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I have a 1995 nissan maxima i have changed the mass air flow sinsor, complete timmin chain set, fuel pump, air filter,crank position 1 and 2, fuel regalator, and it still doesnt run right.. when u start the car its like its starvin for fuel, then u have to wait til the temp gage get to where its suppose to be temp wise plus the rpm has to be at 2 and a half for the car to take gear to go anywhere.. then when u come to a turn, it shuts off...its coded out the second time as the mass air flow and the intake temperature sinsor.. please help.. i have done put 1100.00 in the car and had it only a month..

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  • Nissan Master
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Hi, the common denominator here may be the wiring. With the car behaving poorly and the code indicating the MAF sensor, I would guess a bad wire or two involved here. If you have a multimeter, you can run the tests below to verify that the data is bad. The MAF signal at pin 1 should be the white wire--I guess. Then the ground would be the black wire. Do check for the battery voltage on the red wire. For the IAT sensor, the reference voltage might be 5 volts on the black wire. The white wire should have a somewhat lower voltage with the (key on). If you are not seeing these voltages, trace the wires back to find the problem. The ECU in under the glove box. If the signals look good at the sensors, you may need to check them at the ECU. You can also back-probe the ECU connector,. since you'll want it connected with the key on to check the signals. Just match the wire colors and pin numbers to make sure you are checking the right signal. Please let me know if you have questions, and thanks for using FixYa.

i have a 1995 nissan - jturcotte_1253.gif



Fig. Fig. 2: On 1995-98 vehicles, backprobe terminal 1 for testing

  1. Using a multimeter, check for voltage by backprobing the MAF sensor connector, as illustrated.

jturcotte_344.jpg


Fig. Fig. 3: To backprobe the connector, remove the rubber boot from the back of the connector

  1. With the ignition switch ON and the engine stopped, voltage should be less than 1.0 volt.

  2. Fig. Fig. 4: The voltage should be less than 1 volt with the key in the ON position

    1. With the engine idling at operating temperature, voltage should be 1.0-1.7 volts.
    2. With the engine running at approximately 2,500 rpm, voltage should be 1.5-2.1volts.
    It is important to watch for a linear voltage rise in response to increases in engine rpm, up to about 4000 rpm.
    1. If voltage is not within specifications, check the power and ground circuits.
    2. If the power and ground circuits test okay, the MAF sensor may be faulty. jturcoti have a 1995 nissan - jturcotte_1256.gif=



      jturcotte_1257.gif

Posted on Mar 16, 2011

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  • 23 Answers

I see two potential problems occuring.

1) It sounds like your timing isn't set correctly and would need to be re-timed

2) Your mass air flow was put in backwards and simply needs to be turned around.

I hope this helps.

Posted on Mar 16, 2011

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