1985 toyota pick-up 22r choke not working
Jan 23, 2011 at 3:54 PM
choke
1985 TOYOTA PICKUP
SEF SOLORIO
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It's a vacuum operated opener, so check to see if the vacuum diaphram is holding vacuum. You can either get a vacuum tester(hand held pump), or use a rubber tube and suck on it, if the opener is OK it will hold vacumm and the linkage will move, if no good it will leak, and linkage wont move.
Jan 23, 2011 at 4:12 PM
Is there vacuum to the choke opener?
Is choke opener diaphragm leaking?
Is choke opener diaphragm leaking?
Jan 23, 2011 at 4:13 PM
Or this could also be the concern.
COLD MIXTURE HEATER
All models are equipped with a cold mixture heater. When coolant temperature is low, the ECU
activates a heater in the intake manifold which warms the air/fuel mixture. This system promotes
starting in cold weather.
1. With choke valve fully opened, check to ensure that it closes completely when coil housing is rotated counterclockwise.
2. Position coil housing so that it will align with choke coil cover center mark. Choke valve will close fully when ambient temperature reached 77 degrees F (25 degrees C) on all except 3A-C, 4A-C and 4A-LC engines or 86 degrees F (30 degrees C) on 3A-C, 4A-C and 4A-LC engines. Also, each graduation on thermostat case equals approximately 9 degrees F (5 degrees C).
See diagram below for a breakdown of the components
COLD MIXTURE HEATER
All models are equipped with a cold mixture heater. When coolant temperature is low, the ECU
activates a heater in the intake manifold which warms the air/fuel mixture. This system promotes
starting in cold weather.
1. With choke valve fully opened, check to ensure that it closes completely when coil housing is rotated counterclockwise.
2. Position coil housing so that it will align with choke coil cover center mark. Choke valve will close fully when ambient temperature reached 77 degrees F (25 degrees C) on all except 3A-C, 4A-C and 4A-LC engines or 86 degrees F (30 degrees C) on 3A-C, 4A-C and 4A-LC engines. Also, each graduation on thermostat case equals approximately 9 degrees F (5 degrees C).
See diagram below for a breakdown of the components
Image (Click to enlarge)
Jan 23, 2011 at 4:15 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.