2k2 SE after TB cleaning
05-03-2003, 03:19 PM
#1
Senior Member
Thread Starter
Join Date: Oct 2002
Posts: 257
2k2 SE after TB cleaning
well today being a nice sunny day i went and picked up some TB cleaner, took apart my frankencar and got cleaning. After 49000km there was a lot of nasty build up, but i got it out. Put back the intake and started it up.
My car was idling at 1200rpm , a little on the high side i thought.
i let the car warm up and i took it for a quick spin. Heres what's up. When downshifting the rpms stay up there and slowly creep down very noticeblely diffrent from before where the rpms would drop at a normal rate. When stoping the tach drops to 1200rpm hesitates for a sec or so then goes to 700rpm, but then it goes back up n down one final time. 20mins later after taking it apart and checking all places air could be leaking in and vaccums i put it back together and got an SES. So i put the stock box back in and made the call.
Looks like the buterfly on the 2k2-2k3 DBW maxes are sensitive, i think when i was opening the buterrfly i might have thrown the o-so sensitive positioning/calibration off. So i called nissan roadside and told them my car had an SES and was idling all funny. Monday morn i'm getting towed in for waranty work.
either i had bad luck or those DBW motors are sensitive
If anyone has positive feedback or has encountered this issue please feel free to reply
My car was idling at 1200rpm , a little on the high side i thought.
i let the car warm up and i took it for a quick spin. Heres what's up. When downshifting the rpms stay up there and slowly creep down very noticeblely diffrent from before where the rpms would drop at a normal rate. When stoping the tach drops to 1200rpm hesitates for a sec or so then goes to 700rpm, but then it goes back up n down one final time. 20mins later after taking it apart and checking all places air could be leaking in and vaccums i put it back together and got an SES. So i put the stock box back in and made the call.
Looks like the buterfly on the 2k2-2k3 DBW maxes are sensitive, i think when i was opening the buterrfly i might have thrown the o-so sensitive positioning/calibration off. So i called nissan roadside and told them my car had an SES and was idling all funny. Monday morn i'm getting towed in for waranty work.
either i had bad luck or those DBW motors are sensitive
If anyone has positive feedback or has encountered this issue please feel free to reply
05-03-2003, 06:55 PM
#3
Senior Member
Join Date: Jun 2002
Posts: 402
Accelerator Pedal Released Position Learning NFEC1186
DESCRIPTION NFEC1186S01
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each
time harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE NFEC1186S02
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
________________---
Throttle Valve Closed Position Learning NFEC1187
DESCRIPTION NFEC1187S01
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitorizing the throttle position sensor output signal. It must be performed each time harness connector
of electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE NFEC1187S02
1. Turn ignition switch “ON”.
2. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
____________________
Idle Air Volume Learning NFEC1188
DESCRIPTION NFEC1188S01
“Idle Air Volume Learning” is an operation to learn the idle air vol-ume
that keeps each engine within the specific range. It must be
performed under any of the following conditions:
I Each time electric throttle control actuator or ECM is replaced.
I Idle speed or ignition timing is out of specification.
PREPARATION NFEC1188S02
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
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 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 indi-cates
less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive
vehicle for 10 minutes.
Without CONSULT-II NFEC1188S0302
NOTE:
I It is better to count the time accurately with a clock.
I It is impossible to switch the diagnostic mode when an
accelerator pedal position sensor circuit has a malfunc-tion.
NOTE:
Before perform “Idle Air Volume Learning”, make sure that “Accel-erator
Pedal Released Position Learning” and “Throttle Valve
Closed Position Learning” are completed.
If not, perform “Accelerator Pedal Released Position Learning”,
EC-71 and “Throttle Valve Closed Position Learning”, EC-71.
1. Start engine and warm it up to normal operating temperature.
2. Check that all items listed under the topic “PRE-CONDITION-ING”
(previously mentioned) are in good order.
3. Turn ignition switch “OFF” and wait at least 10 seconds.
4. Confirm that accelerator pedal is fully released, turn ignition
switch “ON” and wait 3 seconds.
5. Repeat the following procedure quickly five times within 5 sec-onds.
1) Fully depress the accelerator pedal.
2) Fully release the accelerator pedal.
6. Wait 7 seconds, fully depress the accelerator pedal and keep
it for approx. 20 seconds until the MIL goes off.
7. Fully release the accelerator pedal within 3 seconds after the
MIL goes off.
8. Start engine and let it idle.
9. Wait 20 seconds.
10. Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
ITEM SPECIFICATION
Idle speed MT: 625±50 rpm
AT: 675±50 rpm (in “P” or “N” position)
Ignition timing MT: 15±5° BTDC
AT: 15±5° BTDC (in “P” or “N” position)
11. If idle speed and ignition timing are not within the specification,
the result will be incomplete. In this case, find the cause of the
problem by referring to the “Diagnostic Procedure” below.
DESCRIPTION NFEC1186S01
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each
time harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE NFEC1186S02
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
________________---
Throttle Valve Closed Position Learning NFEC1187
DESCRIPTION NFEC1187S01
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitorizing the throttle position sensor output signal. It must be performed each time harness connector
of electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE NFEC1187S02
1. Turn ignition switch “ON”.
2. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
____________________
Idle Air Volume Learning NFEC1188
DESCRIPTION NFEC1188S01
“Idle Air Volume Learning” is an operation to learn the idle air vol-ume
that keeps each engine within the specific range. It must be
performed under any of the following conditions:
I Each time electric throttle control actuator or ECM is replaced.
I Idle speed or ignition timing is out of specification.
PREPARATION NFEC1188S02
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
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 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 indi-cates
less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive
vehicle for 10 minutes.
Without CONSULT-II NFEC1188S0302
NOTE:
I It is better to count the time accurately with a clock.
I It is impossible to switch the diagnostic mode when an
accelerator pedal position sensor circuit has a malfunc-tion.
NOTE:
Before perform “Idle Air Volume Learning”, make sure that “Accel-erator
Pedal Released Position Learning” and “Throttle Valve
Closed Position Learning” are completed.
If not, perform “Accelerator Pedal Released Position Learning”,
EC-71 and “Throttle Valve Closed Position Learning”, EC-71.
1. Start engine and warm it up to normal operating temperature.
2. Check that all items listed under the topic “PRE-CONDITION-ING”
(previously mentioned) are in good order.
3. Turn ignition switch “OFF” and wait at least 10 seconds.
4. Confirm that accelerator pedal is fully released, turn ignition
switch “ON” and wait 3 seconds.
5. Repeat the following procedure quickly five times within 5 sec-onds.
1) Fully depress the accelerator pedal.
2) Fully release the accelerator pedal.
6. Wait 7 seconds, fully depress the accelerator pedal and keep
it for approx. 20 seconds until the MIL goes off.
7. Fully release the accelerator pedal within 3 seconds after the
MIL goes off.
8. Start engine and let it idle.
9. Wait 20 seconds.
10. Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
ITEM SPECIFICATION
Idle speed MT: 625±50 rpm
AT: 675±50 rpm (in “P” or “N” position)
Ignition timing MT: 15±5° BTDC
AT: 15±5° BTDC (in “P” or “N” position)
11. If idle speed and ignition timing are not within the specification,
the result will be incomplete. In this case, find the cause of the
problem by referring to the “Diagnostic Procedure” below.
05-04-2003, 08:23 AM
#4
Senior Member
Join Date: Sep 2001
Posts: 816
LOL!! 
I did the same thing man! You had to have somebody in the car with the Key to the "ON" position and flooring the gas when you went in the TB to wipe the deposits. This is what the dealer told me. Careful not to spray into the control module or you'll get the liquid into it and throw it off. Good thing you have warranty, its almost a $900 repair. Here's my old post....
http://forums.maxima.org/showthread....&highlight=EFI
I did the same thing man! You had to have somebody in the car with the Key to the "ON" position and flooring the gas when you went in the TB to wipe the deposits. This is what the dealer told me. Careful not to spray into the control module or you'll get the liquid into it and throw it off. Good thing you have warranty, its almost a $900 repair. Here's my old post....
http://forums.maxima.org/showthread....&highlight=EFI
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