Question about 1985 Nissan 300ZX

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85 nissan 300 zx turbo throttle probs

Engine will start and idle but when gas pedal is depressed there is no throttle response... what is it?

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Check the connector for the MAF mass air flow sensor and TPS throttle position sensor. Unplug them and look at the terminals to see iof they are green with oxidation. if so, clean them with a tiny file, like a fingernail file but narrower, or jewelers file. somthing that will fit into the plug and scrape the crust off the contacts. after that, fill the plug and sensor with dielectric greese, like silicone greese they use for spark plug wire boots.to seal out the moisture.

Posted on Dec 12, 2009

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Foot slipped off gas peddle while accelerating causing car to stall. Now when I try to start it, it barley idles then stalls. Help!


Check your throttle cable from pedal to engine,may have came loose or something has broke.Make sure floor mats isn't catching at pedal,I am a 350 fan.love to have one.Have a 85 Nissan 720 4x4 with Weber.

Jun 05, 2015 | 2003 Nissan 350Z

Tip

How to reset ECU,Throttle and Accelerator Position Learning


Hi.

Below the procedure to reset ECU,Throttle and to perform Accelerator Position Learning on Nissan. It works on Titan, Altima, Infinity, pathfinder and other models.

ECU Resetting


While performing the procedures below, ensue that you are respecting the times stated. If the steps are not done within the specified times, the module will not reset. You will need to use a watch or a chronograph while performing the procedures.

Procedure:

1. Ensure that the accelerator pedal is fully released, set ignition switch to the “ON” position, then wait 3 seconds.
2. Follow the steps a and b below, repeat the two steps in sequence quickly for five times within 5 seconds.
a. Push hard the accelerator pedal untill fully depressed.
b. Release the accelerator pedal in full.
3. Wait 7 seconds, then depress the accelerator pedal completely, and hold it for about 10 seconds until the CEL (check engine light) starts blinking.
4. Release the accelerator pedal while the CEL is still blinking.
5. Wait 10 second.
6. Depressthe accelerator pedal in full and hold it for 10 seconds or more.
7. Fully release the accelerator pedal while the CEL light keeps flashing.
8. Turn the ignition switch to “OFF” position and start the vehicle. If procedure has been done correctly, then the light light will turn off.
If the light continues to stay on, repeat the procedure.

Accelerator Pedal Release Position Learning

Procedure

1. Ensure that the accelerator pedal is completely released before starting the procedure.
2. Turn the ignition switch “ON” and wait at least 2 seconds.
3. Turn the ignition switch “OFF”, and wait at least 10 seconds.
4. Turn the ignition switch “ON” and wait 2 seconds.
5. Turn the ignition switch “OFF” and wait 10 seconds.

Throttle Valve Closed Position Learning

Procedure

1. Ensure that accelerator pedal is completely released.
2. Turn ignition switch to the “ON” position.
3. Turn ignition switch to the “OFF” position and wait at least 10 seconds.
Ensure that the throttle valve moves after turning the switch off.

Idle Air Volume Learning (Throttle Position Learning)

Procedure

1. Follow the Accelerator Pedal Released Position Learning described above.
2. Do the Throttle Valve Closed Position Learning also described above.
3. Start the engine, and allow warming up.
4. Turn the ignition on “OFF” positionand wait 10 seconds.
5. Ensure that accelerator pedal is fully released, then turn the ignition switch to “ON” position, and wait 3 seconds.
6. Repeat the steps a and b below five times within 5 seconds in sequence.
a. Push hard the accelerator pedal untill fully depressed.
b. Release the accelerator pedal until reaching full extension.
8. Wait 7 seconds or more, depress the accelerator pedal completely and hold the pedal down for about 20 seconds until you see that the Check Engine Light stops blinking and starts getting steady..
9. Rrelease completely the accelerator pedal within 3 seconds after the light coming ON.
10. Start engine and let it run at idle for about 20 seconds.
12. Test the engine to ensure the idle speed and ignition timing are set correctly.

Regards.

on Mar 25, 2010 | Nissan Titan Cars & Trucks

1 Answer

I just bought a 1996 Nissan 300 zx non turbo 5 speed and it won't idle. But when you put it in gear it will idle at like 2000 rpms or if you turn the heater on it will idle at about 1200 rpms. I


Try twinturbo.net. plenty of 300zx enthusiasts and info on that site. Has a tech forum and links to faq. Look around and search. I go there for help on my 93 Z. And no, it doesn't have to be a turbo model.

Feb 18, 2018 | 1996 Nissan 300ZX

1 Answer

Starts fine,idles fine,stalls when put in gear to drive away


Try depressing slightly the gas pedal to see if the engine continues to run when you put it in gear. Might have to depredd gas pedal and brake simultaniusly. if the engine continues to run, then the problem is in the idle circuit. Try decarboning the throttle body and the idle speed control.

Mar 26, 2010 | 1989 Honda Accord 4 Door

1 Answer

Car will idle but there is no response when


This car uses "drive by wire" technology and uses a sensor to measure gas pedal movement. This sensor the transmits the info to the engine. So there is no mechanical throttle cable. You might have a bad accelator pedal sensor or it could have a loose wire. Take a look under the dash at the pedal and see if you can locate the sensor and verify it is still connected.

Oct 11, 2009 | 2003 Nissan 350Z

1 Answer

Need to increase the idle on a 1987 Nissan 300 zx non turbo. where is the "idle screw" or equivalent


Remove plug from air flow meter(air filter box) and adjust there. It will be on the top.

Jul 24, 2009 | 1984 Nissan 300ZX

1 Answer

Nissan Installed throttle reprogram


Here is the way to do it without the nissan scan tool. Make sure to follow all steps and it it best if you use a watch with a second hand.
1. Perform "Accelerator Pedal Released Position Learning".
a. Make sure that accelerator pedal is fully released.
b. Turn ignition switch 'ON' and wait at least 2 seconds.
c. Turn ignition switch 'OFF' wait at least 10 seconds.
d. Turn ignition switch 'ON' and wait at least 2 seconds.
e. Turn ignition switch 'OFF' wait at least 10 seconds.
2. Perform "Throttle Valve Closed Position Learning" .
a. Make sure that accelerator pedal is fully released.
b. Turn ignition switch 'ON'.
c. Turn ignition switch 'OFF' wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound. 3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic 'PREPARATION' (previously mentioned) are in good order.
5. Turn ignition switch 'OFF' and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch 'ON' and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal. 8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL goes off.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
13. If idle speed and ignition timing are not within the specification, the result will be incomplete. In this case, more test needs to be done.

Jun 24, 2009 | 2004 Nissan Sentra

2 Answers

Issue with throttle control on my 2003 Maxima


I discovered that its the throttle body sensor. Its not sensing the postion of the foot pedal. The throttle body has a sensor that is linked to your gas pedal via a cable. The spring that the repair man mentioned could be the issue. The sensor then communicates to the computer the position and then computer then applies fuel, the mass air sensor then will communicate to the computer and the computer will then allow more or less air to fuel ratio. So if your stomping on the gas and there is not any response, then your throttle body sensor is most likely going out.

Nov 21, 2008 | 2003 Nissan Maxima

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