tprouty

My check engine light came on and I had the codes read out the codes at Auto Zone as follows:
P0510, PO325, Po732 and P0733.
The vehicle seems to run well. The codes seem to be unrelated (Throttle Posiond Closed, Knock Sensor Fault, Gear 2 raio incorrect, Gear 3 ratio incorrect), I assumed that the ECM glitched, so I had them cleared. After driving for 3 day or so the light came on again. Reading the codes again showed some of the same ones (Po510, P0325, P0733).

Any ideas? Is ther some other cause for these seemingly unrelated faults?

Thanks in advance for any help.

lewisnc100

You need to adjust your TPS, had the exact same errors and it was out of adjustment. Ignore the knock sensor error, it will not trigger the CEL.

__________________
1997 Pathfinder XE
Air Lift Air Bags, Warn Hubs

titan_213

You will need to replace the TPS, to erase those codes, but setting it is a bit tricky for the "do it yourselfer", as far as the knock sensor code I wouldn't concern myself with it that much, as it will not set the CEL off. You may find the procedure for setting the TPS some where on the net I don't know, but if you do not have the closed throttle switch part of the TPS set right, it will make the motor do all kinds of wierd stuff.

lewisnc100

Most likely you don't need to replace the TPS, just adjust it. Myself and others have had the exact same codes and adjusting the TPS has fixed it. It is VERY easy to adjust and only takes about 5-10 minutes, but you need to make sure the engine is completely warmed up.

Here's the steps:

To adjust the throttle position sensor you'll just need a .012 and .016 feeler gauge and a multimeter.

Look at the throttle body and you'll see the throttle position sensor on the side with two electrical connections, the top is the closed throttle position switch and the bottom is the variable output throttle position sensor. To adjust the sensor you'll use the top one, the closed throttle position switch.

1. Warm up engine until the fast idle cam retracts and the throttle lever rests on the throttle stop screw (never adjust the stop screw)
2. Remove the electrical connection to the closed throttle position switch (top one on 97 Pathfinder)
3. You'll see 3 terminals, you will be testing for continuity across the top two (5 & 6)
4. Insert the .012 feeler gauge between the stop screw and the throttle drum stop, should have continuity 0 ohms
5. Insert the .016 feeler gauge and you should not have continuity
6. If readings are incorrect loosen the bolts and adjust the sensor (rotate) until the readings are correct
7. When the readings are correct turn the ignition on (wait 5 seconds) and off (wait 10 seconds) and repeat 16 times to relearn the closed position.

__________________
1997 Pathfinder XE
Air Lift Air Bags, Warn Hubs

tprouty

Thanks for your help. I'll post back the results afer I try it.

pat76cj

Just started getting the P0733 code and then found your very helpful information on the web. One question, when you say 0 Ohms, is that an approximate value, depending on what you set your multimeter range at? I went ahead and did the adjustment (I had about 25 Ohms for the .016 feeler gauge setting).

Thanks again

lewisnc100

For the .012 feeler gauge it should not be approximate, it should be 0 ohms. For the .016 feeler gauge it should be anything but 0 ohms. If you had a reading of 0 at the .012 feeler gauge it sounds like you're fine.

__________________
1997 Pathfinder XE
Air Lift Air Bags, Warn Hubs