Question about 1994 Toyota Pickup

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High Idle from start

My 22r 1987 motor will go to a really high idle at start and wont go down til its warmed up..I know it has a automatic choke but its not suspose to be so high it sounds like the motor is going to blow?

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Maybe the automatic choke needs a good cleaning and has gummed up over time and is possibly causing the choke to stick until the engine warms and loosens the part to function properly.

Posted on Apr 18, 2009

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High idle wont kick down when warmed up , always high idle why?


Old cars the choke is stuck. New cars the idle air control motor is stuck.

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Automatic choke problems


Yes, spring may have broken or maybe it just needs adjustment. There is a high idle cam that makes the card idle higher when the choke is closed or partly closed.

Dec 20, 2017 | 1982 Porsche 911

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89 dodge shadow. hard start. normal idle cold, fast idle warm. sometimes it wont start until i hear fuel pump activate.


Hello,
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day. -Steve

Dec 06, 2009 | 1989 Dodge Shadow

1 Answer

1987 Ford Ranger 2.0L idle is very high and wont go down


Sounds like you need W-D40 on all the movable parts of your carb. Also see what is blocking the butterfly to close all the way. Check the high idle linkage and see if it is properly closing all the way on warmup.

Aug 26, 2009 | 1987 Ford Ranger

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High RPM between shifts or at idle after driving/ warm engine


Clean the choke and linkage around the air cleaner again.

You are on the right track.

I will give ALL the intake manifold bolts a 1/6 turn....just to rule out leaky intake manifold gasket.

Check for loose or leaky vacuum hose.

Since you truck is 1987. I will replace all small vacuum hoses.

Change one at at time.

====
Change the fuel filter
====
Test fuel pressure
====
Check the ohm specification on the coil.
====
If the wires are over 3 years old then replace it
Check and clean contacts
====
Make sure the wires are not cross.
====

Do a good carb. cleaning and use Chevron gas for one tank full. Do some high RPM highway ran and see does it improve.

Aug 23, 2009 | 1987 Toyota Pickup

1 Answer

Choke won't close all the way down


I'm not exactly sure about the 1987 toyota choke, but the basic concept of a choke is that the butterfly(flap in top of the carburetor) needs to close to allow less air and more fuel to enter the intake when the engine is cold. This is acomplished on most carburetors with an electric choke thermostat. The thermostat has a bimetallic spring that is would up and connected to the butterfly through a rod. The bimetallic spring is made of a special allow that expands and contracts as the temperature changes. Usually through a relay of some sort 12v or less is applied to the choke thermostat with the engine running and used to heat the spring therefor releasing tension on the closed butterfly. It sounds like your butterfly is never opening as the engine is warming up, and staying on fast idle. See if there is a wire on the thermostat and remove it and check it with a voltmeter with the car running, there should be >8vDc. If there's voltage then the thermostat is probably faulty(as long as the linkage is ok) If there is no voltage, check the fuses and fuse links and then consult a schematic to see where the voltage is suppiled from/to, could be a faulty relay as well.

Aug 20, 2009 | 1987 Toyota Pickup

1 Answer

Carburator tune up of charadade 1992 sedan. The engine is running too fast while idle at 1200 r.p.m.


Before you start check the status of your choke. One that is stuck on will cause a high idle. If the choke checks out, proceed to the following:


You should have what's called a 2 needle carburetor. A larger screw adjustment for idle, and a smaller for high speed.

Start by adjusting your low speed (idle) needle until you reach the desired idle. I prefer about 850rpms. Do this with the engine running and adequately warmed so that your adjustments are not thrown off by the automatic choke.

Next slowly open up the high speed needle. As you open it your idle speed will gradually increase. Adust it in 1/8 turn increments, pausing after each adjustment to allow the changes to take affect. Keep opening it until you stop increasing your rpms, then take it back 1/8 of a turn.

Next readjust your idle mixture screw so that your idle is back down to 850rpms.

Apr 29, 2009 | 1992 Daihatsu Charade

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