Question about 1991 Nissan Sentra 2 Door

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Nissan pintara ti 91 u12

Heating/ air con goes from hot to cold no in between, its either hot hot hot or cold

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Your blend door in your car isn't functioning properly. The blend door is a part of the box that your heater core is in.

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What type/brand of oil do I use to fill my Nissan pintara u12 model for the engine??

Not sure what the manufacturer called for and if the cap on the valve cover doesn't indicate what to use then most vehicles built around that time used 10w30. If the engine is loose(high mileage and/or burns oil ) then you may want to use 10w40. On newer cars or in extreme cold temps you can use 5w20. Again these are general rules that I go by and if you get someone that has the manual and tells you something different then of course go with that.

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No heat in the car

Change back to the correct t-stat, the main air door thermistor that goes from hot to cold is stuck or going bad or some cases the dash temp control is going out.

Dec 02, 2013 | 2005 Nissan Altima

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My 2001 lesabra thro hot air then cold then hot

sounds like your thermostats or maybe air con needs serviced

Jan 22, 2013 | 2001 Buick LeSabre

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Where are the fuel filters located on a 91 nissan pintara

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too many posts same car

Jan 16, 2010 | Nissan Pulsar Cars & Trucks

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No fwd or reverse in a 1991 2.4 ltr nissan pintara model U12

Now that depends on weather its auto or manual type g/box
Auto box now this depends on its either no trans oil/auto pan filter cloged up/body valves in g/box have sticking pistons/or pistons in pumps not working due to body valve or forward and reverse bands worn also due to above. plus it could be the torque convertor problems.
BUT a Manual box
Lack of oil/ clutch centre plate or pressure plate worn or broken springs /input shaft bearing/gear selectors ball and spring on selector indent jamed etc.
Let me know which box you have. Ron

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Nissan xterra..2000

your air con needs re gasing

Jul 07, 2009 | 2000 Nissan Xterra

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