Question about 1995 Toyota 4Runner
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Posted on Jan 02, 2017
I'd be thinking real serious about changing the IAT sensor. Usually located on air cleaner housing, it senses the incoming air temperature & advises Computer to adjust fuel as necessary.You can try removing it & cleaning it with tuner cleaner from electronics store, but replacement is usually required. A good mechanic & scan tool can test it before replacing to see if it is functioning properly.
Posted on Jun 07, 2009
You might have a bad coil. Under a load the coil might preform well, but under no load, its weak causing a misfire...thus giving you a rough idle. I have had this problem on a few vehicle. Check plugs, wires, and distributor. Mike.
Posted on Sep 18, 2009
one of you air line pipes could have collapsed or split which will cause a problem with idling and performance and it will give no smoke signs
Posted on Feb 13, 2010
SOURCE: 2003 toyota sienna idle problem
After about 100K + miles the idle air control valve (IAC) begins to collect carbon deposits that interfere with the movement of the spring-loaded valve. You will not be able to clean this without removal and dissembly of the IAC body. Use an emory cloth or fine sandpaper to remove the build up around the valve. This should free it up to rotate without binding. This is a temporary fix, of course, and will either require cleaning again or replacement of the valve. Getting to the IAC requires removal of most of the intake upto, but not including, the intake manifold. Total time is approximately 3-4 hours, but worth it. Good luck, and I hope this helps.
Posted on Feb 21, 2010
yes it could be a fuel related problem, when was your last tune up, it could also be a spark issue, old or corroted spark plugs will sometimes not put out the correct amount of heat to ignite the gas correctly till it runs for a while, if the check engine light isnt lit, it will almost have to be something simular to this
Posted on Mar 19, 2010
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