Question about 1994 Toyota Land Cruiser
I had an '87 Celica doing the same thing and it was an intake manifold gasket that wasn't sealing-pulling in a lot of air. A lot more than a vacuum hose leak, which would only raise the idle a bit, but not cause the surging you are having and that I had. So check for a large air or vacuum leak. A rip or hole in the large intake boot may also be the source.
To check the manifold gasket, get a spray bottle filled with water and have someone keep the engine running at around 2000 rpm or higher. Soak the area all around the intake manifold gasket, wet it down pretty good. If any leaks are there, the water will get sucked in and cause a noticeable stumble in the engine, may even try to die. Check all hoses for vacuum leaks too, the large hose to the power brake booster.
If it's not a vacuum leak, try unplugging the MAF sensor and see how the engine runs. If it settles down, clean or check the sensor.
Posted on Jul 25, 2013
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Posted on Jan 02, 2017
SOURCE: high idling at low temp.
Offhand, yes this would be normal. The high idle is brought about by the auto choke whose purpose is to hasten the reaching of operating temperature of the engine. The fact that the idle RPM goes down after some time is a good indicator, it tells us that the auto choke is working.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.
Posted on Nov 22, 2008
the motor is usually on the throttle body.follow gas pedal cable to the throttle body. with a new motor in hand it will be obvious wich part it is
Posted on Apr 21, 2010
SOURCE: Engine over revving at idle
looks like yor air valve is not working properly.check the water imput (could be clogged). also,did you removed your termostat? if so,put it back and solve the problem.
Posted on May 02, 2010
SOURCE: Sticky high acceleration 1995 LE
The spring that returns the throttle is getting weak. Best thing to do is clean the throttle inside and out. Clean the throttle plate front and back and as for as you reach inside, use an old tooth brush and brake clean. Once clean lube the spring area. This should help. But if it still sticks , I would be looking at the throttle cable.
Posted on Aug 14, 2011
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