Question about 1993 Toyota Previa

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Which refrigerant is used in a 1993 previa sold in Canada

I need to know if the 1993 previa used R-12 or R-134a in the dual zone air conditioning system

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1993 Previas contained R-12 from the factory.
33.5 +/- 1.7 ounces needed to perform a complete recharge.

Posted on Nov 14, 2008


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Heater plows cold air on drivers side on my 2005 inpala

You probably have automatic air conditioning with dual zone capability, Please review the owners manual for the dual zone operation. I looked in the service manual and certain heat / air settings criteria have to be met before the system will work properly in automatic mode. If those conditions are not met, the system will assume manual operation and mostly play dead waiting for the user defined manual settings. Start with a good review of the dual zone automatic settings.

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You have a high pressure and a low pressure hose in the air-conditioning system. Cutting these hoses can be dangerous and can release ozone destroying gasses into the atmosphere. Do not attempt to cut these hoses if you don't know what you are doing, or if you don't have the equipment to handle refrigerant gasses.

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Failed smog test.too rich

sounds like it needs a good tune up and new airfilter will sort it out

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Doesn't start, but makes clicking noise

Your battery is in need of charge, or there is a bad connection (corrosion) at the terminals. Try to jump start, check connections. If you still can't start it, bring the battery to a store for a free check of it's condition. Let me know if this does not solve the problem.

Jun 28, 2010 | 1993 Toyota Previa

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Need to know how to read toyota engine light code

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Nov 12, 2009 | 1993 Toyota Previa

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Rate of gasoline usage

Make sure the vehicle has had a tune up, Spark plugs and wires. Check PCV valve. ETC. ALso may want to run diags on it with OBD code reader to see if it is pulling codes that just arent' showing on CEL(Check engine light)

Jan 19, 2009 | 1993 Toyota Previa

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1993 Previa heat doesn't work

Thanks for the quick reply. What you have is a thremostat that is stuck in the "open" position. This would explain why the temp gauge reads low. Also, this condition will also cause the engine to seem like it is "revving up". Why? Because the OverDrive will not engage until the temperature of the coolant is 172 degrees F. When the coolant reaches that temp, the OD solenoid gets power from the ECU, dependant on the temp mentioned above...NOW, when the temp of the coolant DROPS below 172 (as in having a seized open thermostat), the solenoid is de-energized by the ECU, and the trans shifts OUT of OD. Downshifting to the next lower gear cause the RPMs to incerase. In any case, replace the thermostat, and whilst you are doing this, replace the coolant, also. If you have RED coolant, that is factory Toyota coolant. Is is a GOOD IDEA to continue using the red coolant if you already have it in your cooling system. Buy the stat and the coolant at a Toyota dealer. Do NOT buy an "aftermarket" stat. The cheaper ones do NOT have the air "wiggle" valve built into the stat. Install the stat with the little "wiggle valve" pointing straight up; "12 o'clock". Add 50-50 coolant water mix, Bleed the air from the cooling system & you will be fine.

Sep 23, 2008 | 1993 Toyota Previa

1 Answer

Air conditioning

On a w body car with a single temp adjustment control (not a dual zone) your problem should be a low refrigerant charge. Due to the design of this evaporator, a low refrigerant charge will cause the furthest areas from the inlet and outlet hoses (the drivers side) to not remove the heat from the incoming air. This allows the air on the drivers side to be outside temp but refrigerated on the passenger side. In cars with Dual Zone controls you must not only verify the refrigerant charge level, but also check the mode doors which control the air flow and regulate the temp. To check the refrigerant level do not use pressure gauges alone. Verify a proper charge level by checking the temperature of the two aluminum lines going in to the firewall of the vehicle. With the A/C set to high the temperatures should be within 5 degrees of each other. If not, then there is a charge issue. I hope this helps

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Toyota Previa 1993 AM-FM Cassette Unit Model 11709

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1993 Toyata Previa

El encendido es demorado, hay que darle varios startes.
La luz testigo indicadora de la presión de aceite no se apaga sino después de un rato de funcionamiento del motor.

Jun 14, 2008 | 1993 Toyota Previa

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