Stru

I replaced the TPS in my 01 Maxima and now my RPM's seem to be all over the place. I'm a serious noob with cars and don't know how to even use a multimeter. The FSM is very hard to understand. Any guides or tutorials that'll guide me through so I don't have to go to the stealership?

Pilm

Try this: http://www.iroczone.com/2009/10/adju...on-sensor-tps/

Different car, same idea. As for using a multimeter, they are simple to use, crap, even my wife could do it!

a33nismo

Do a TPS / idle relearn procedure.

Here you go.

Please make sure when performing this procedure your engine is a at normal operating temperature.

official idle relearn for the 5th gen maxima ( 00-01)
PRE-CONDITIONING
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment.
I Battery voltage: More than 12.9V (At idle)
I Engine coolant temperature: 70 - 99°C (158 - 210°F)
I PNP switch: ON(Vehicle In Neutral)
I Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting
switch to the 1st position to light only small lamps.
I Cooling fan motor: Not operating
I Steering wheel: Neutral (Straight-ahead position)
I Vehicle speed: Stopped
I Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.

Without CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
2. Turn ignition switch “OFF” and wait at least 10 seconds.
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good order.
5. Turn ignition switch “OFF” and wait at least 10 seconds.
6. Start the engine and let it idle for at least 30 seconds.
7. Disconnect throttle position sensor harness connector (brown),
then reconnect it within 5 seconds.
8. Wait 20 seconds.
9. Make sure that idle speed is within specifications. If not, the result will be incomplete. In this case, find the cause of the problem by referring to the NOTE below.
10. Rev up the engine two or three times. Make sure that idle
speed and ignition timing are within specifications.

ITEM SPECIFICATION
Idle speed M/T: 625±50 rpm
A/T: 700±50 rpm (in “P” or “N” position)
Ignition timing M/T: 15°±5° BTDC
A/T: 15°±5° BTDC (in “P” or “N” position)
NOTE: If idle air volume learning cannot be performed successfully, proceed as follows:
1) Check that throttle valve is fully closed.
2) Check PCV valve operation.
3) Check that downstream of throttle valve is free from air
leakage.
4) Adjust closed throttle position switch and reset memory.
(Refer to Basic Inspection, EC-115.)
5) When the above four items check out OK, engine component
parts and their installation condition are questionable.
Check and eliminate the cause of the problem.
It is useful to perform “TROUBLE DIAGNOSIS — SPECIFICATION
VALUE”, EC-157.
6) If any of the following conditions occur after the engine
has started, eliminate the cause of the problem and perform
“Idle air volume learning” all over again:
I Engine stalls.
I Erroneous idle.
I Blown fuses related to the IACV-AAC valve system.

lidlitalian

I tried the idle relearn procedure on my 2k max gle and when I came to the disconnecting of the TPS, the car immediately shut right off???


What does this mean?

maximatech12

How would the temp be 210F and the cooling fan off?

I think this temperature is a bit out of spec. I think 203 is the highest you want to be not 210. The fans will come on at 214.​​​
Data scan says 176F-203F

What would happen if this adjustment is not performed after removing the Tps for douching the throttle body?

I get a hard start and some hesitation after removing the TpS and putting it back on. I was aware This tps has to be set right but had no clue of what to expect if its not set perfectly.

Im seeing discussions about idle adjustment and TPS adjustment but not anything about issues related to this being out of spec.

maximatech12

Has anyone done this?

rodent_infested_03

No. Just run for a few days and the ECU figures things out on its own. Disconnecting battery for 20 mins returns all fuel trim, timing, operation values to factory defaults. Then the system slowly calibrates and compensates for whatever over time. If you disconnect the battery and restart, have a ruff idle, etc, its because something is wrong. Usually a dirty TB, IAC, MAF.

maximatech12

I may just replace the coils.
Bigfatty said to check them by pulling them when the engine is running
https://maxima.org/forums/5th-generation-maxima-2000-2003/338587-got-bad-coils-i-tested-only-replaced-2-how-w-pics.html​​​​​​

but they may be just be fading in and out.
So thats why when I check them theyre fine but they could fade in and out.

krismax

iTrader: (15)

The sad is none of the advice above is right this is how NISSAN says to do it.It's a PDF very small.

http://askatech.com/AskATechLive/for...er.ashx?a=5638