Question about 2000 Nissan Maxima
Clean throttle body,you can adj.set screw at throttle could be on top or bottom.
Posted on Apr 26, 2013
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Posted on Jan 02, 2017
IAC valve problem. Nissan has a updated harness (with one way diode inside of the harness) to prevent backfeeding for the IAC valve and a new IAC valve also gets installed. That's where I would look. IAC valve or "idle air control" valve.
Posted on Sep 21, 2008
SOURCE: No heat while idling
A stuck or partially stuck thermostat.
Rust or other deposits restricting flow through hearer core
Stuck water heater valve (if so equipped)
Low coolant level.
Low battery voltage.
+ all the things avid101 listed.
Posted on Sep 05, 2009
Jeff did you figure this out. I am dealing with the exact same thing currently. Things to look at are Mass Air Flow Sensor (MAF), Throttle position Sensor (TPS), Air Idle control valve. I have played with everything but the Air control valve. I tried three different MAF, including a ghost sensor (circuit to match ressitance). I'm going to investigate the air idle control tommorrow. Let me know if this helps or if you get it figured oot
Posted on Dec 03, 2009
The first and easiest thing you should do or have someone do, is check under the hood for a vacuum leak, possibly coming from a cracked or broken hose. Check and inspect all rubber hoses, including the large ribbed hose running to the throttle body (Engine air intake from the air filter box). You can hear a leak if it is loud enough and will sound like a hiss. Your engine is idling high because of a vacuum leak.
Posted on Mar 05, 2010
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