'93 Nissan Quest low RPM

1993 NISSAN
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AUTOSTRASSE
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  • 2 POSTS
93’ Nissan Quest
Idle RPM sticks around 400 and stays for a different period: 1 day – a few months, and then comes back to 850.
THERE IS NO CHECK ENGINE LIGHT
Thanks,
Max
autostrasse@gmail.com
Jan 22, 2006 at 12:42 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Clarify whether the low idle was accompanied by stalling or other symptoms, and provide any findings already obtained during a low-idle episode.

Guidance references and applicability

Source: Original question and visible replies. Owner reports and other participants' experiences are distinguished. Next steps are editorial requests for clarification or existing diagnostic findings, not a verified repair procedure or an independently confirmed component diagnosis.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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JAY
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  • 8 POSTS
if you re driving the car and there is a loss of power the problem could be that the bitter fly valve is cloged uo with carbon
Jan 30, 2006 at 6:30 AM
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DAEMON240SX
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  • 17 POSTS
pop off the intake tube by the throttle body look for carbon buildup. if it's there clean it off. if that doesnt fix your problem id guess one of your sensors is going bad (MAF?) or the idle control on the throttle body is just completely screwed (unlikely)
Jan 30, 2006 at 1:47 PM

Discussion summary

'93 Nissan Quest low RPM

The owner of a 1993 Nissan Quest reported that idle speed stayed near 400 RPM for periods ranging from a day to several months, then returned to about 850 RPM. The owner reported no check-engine light.

Reported outcome: No completed repair or resolution was reported.

Replies suggested carbon buildup, sensors or idle control, but none was confirmed. The thread does not explain why the idle changed or returned to its usual speed.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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