HELP: High Idling 2002 Y61 Patrol GU ZD30 A/T

[OTEP]

HELP: High Idling 2002 Y61 Patrol GU ZD30 A/T

I was on my way to a meeting last night driving the Patrol. When I came to stop, I shifted the gear lever to neutral (N). To my surprise the engine suddenly revved itself to about 1,000-1,200 rpm even without me touching the throttle.

I shifted back to drive (D) and the revs got subdued a bit to a more docile 750rpm but I could still feel that the engine wanted to rev.

I let the car rest overnight and the same thing still happened on my way to work this morning. Whenever I shift to Park or Neutral, the engine would rev to 1,000-1,200 rpm.

There are no illuminated idiot lights on my dashboard.

What could be the problem? Hope you guys could help out.

[smirky20]

HELP: High Idling 2002 Y61 Patrol GU ZD30 A/T

I was on my way to a meeting last night driving the Patrol. When I came to stop, I shifted the gear lever to neutral (N). To my surprise the engine suddenly revved itself to about 1,000-1,200 rpm even without me touching the throttle.

I shifted back to drive (D) and the revs got subdued a bit to a more docile 750rpm but I could still feel that the engine wanted to rev.

I let the car rest overnight and the same thing still happened on my way to work this morning. Whenever I shift to Park or Neutral, the engine would rev to 1,000-1,200 rpm.

There are no illuminated idiot lights on my dashboard.

What could be the problem? Hope you guys could help out.

kung d nag iiluminate yung MIL, try mo linisin yung IAC (Idle Air Control). yung prob mo i think yung TP (Throttle Position) sensor or yung IAC. baka d na naglalaro ng mabuti yung IAC mo kaya nag stuck open na, kaya diretso ang pasok ng air sa throttle. Pag nag Check engine or umilaw yung MIL, simply remove the negative terminal of the battery for 10min. pag may check engine usually gumagamit ng scan tool for nissan vehicles they use ConsultII, for Ford they used NGS, and for GM cars TechII. but some use the carman scan VG that can diagnose asian and american car, but the only disadvantage is that d nakakapagprogram ang carman. sana maayos na prob mo. ^_^

[smirky20]

HELP: High Idling 2002 Y61 Patrol GU ZD30 A/T

I was on my way to a meeting last night driving the Patrol. When I came to stop, I shifted the gear lever to neutral (N). To my surprise the engine suddenly revved itself to about 1,000-1,200 rpm even without me touching the throttle.

I shifted back to drive (D) and the revs got subdued a bit to a more docile 750rpm but I could still feel that the engine wanted to rev.

I let the car rest overnight and the same thing still happened on my way to work this morning. Whenever I shift to Park or Neutral, the engine would rev to 1,000-1,200 rpm.

There are no illuminated idiot lights on my dashboard.

What could be the problem? Hope you guys could help out.

kung d nag iiluminate yung MIL, try mo linisin yung IAC (Idle Air Control). yung prob mo i think yung TP (Throttle Position) sensor or yung IAC. baka d na naglalaro ng mabuti yung IAC mo kaya nag stuck open na, kaya diretso ang pasok ng air sa throttle. Pag nag Check engine or umilaw yung MIL, simply remove the negative terminal of the battery for 10min. pag may check engine usually gumagamit ng scan tool for nissan vehicles they use ConsultII, for Ford they used NGS, and for GM cars TechII. but some use the carman scan VG that can diagnose asian and american car, but the only disadvantage is that d nakakapagprogram ang carman. sana maayos na prob mo. ^_^

[OTEP]

Thanks for the reply. The HEAT switch is not illuminated when the high idling occurs. But since it has been mentioned, I tried activating the switch.

With the switch on or with the switch off, there was almost no difference in the idle speed.

So now, It's like I'm driving in HEAT mode all the time...

Any more help guys?

[smirky20]

pag d po naka-ilaw yung MIL (malfunction indicator light) or yung symbol ng engine sa dashboard, try nyo po linisin yung IAC located po sa throttle body. check also yung vacuum hoses kung may leak.

[s_quilicot]

continous ba doc otep ang pag rev up to 1200 rom pag shift sa neutral?

kasi in iur 4jx1 trooper nag jujump din ang rpm to around near 1000rpm pero it would last around mga 2 sec lang ..

[OTEP]

Just this morning, on my way home, the check engine light came on, I still managed to drive home. When I turned the engine on and had to drive the car again after a few hours, the light did not stay illuminated anymore.

Maybe a trip to the dealer is in order. The high idling is driving me crazy.

The dealer (over the phone) is diagnoising it as an ECU problem. Though I'm still not inclined to accept that diagnosis yet.

Btw, there are no changes with the a/c on or off. The high idling starts after driving for a few kms and would be high idling for the rest of the trip.