Its a petrol engine if that helps
Nissian has what is called a heater control valve . It is located under the hood in the heater hose going to the Heater core ( not coil ) this vavle controls the flow of coolant going into car it can be plugged or dissconnected . Start by having this checked before any thing else .
Testimonial: "helped me look in the right place, no tap or valve tho to use"
SOURCE: Nissan Altima no cool air blowing or hot air blowing
Hi!
It
appears we have an Air lock scenario and you will need to perform a
system Bleed.
Park
the vehicle on level ground, when cold remove coolant filler cap,
start engine and leave to idle, turn heater on full and blower to
max. When engine reaches operating temperature watch and listen near
coolant filler, keep clear as gurgling and hopefully a boil over
should occur. Top up with very warm coolant and wait as it may do it
again.
Check
for heat inside vehicle if warm replace coolant cap but keep an eye
on temperature gauge as the ~Air lock may have moved on from heater
matrix/core so proceedure needs to be carried out again from COLD.
Please
press the Blue button to appraise my FREE Efforts, Thank You!
Paul
'W' U.K
SOURCE: 97 Nissan Altima AC/heater fan only works on highest setting
Sounds like the blower resistor module needs to be replaced. Could also be the switch.
SOURCE: 2003 Nissan Sentra Problem overheating and heater doesn't work.
I had this exact problem a few weeks ago. The repair shop first changed the thermostat. Didn't fix the problem. Next step, they found the radiator was clogged. They replaced the radiator and now everything works fine.
SOURCE: Heater fan noise-'02 Nissan Maxima
Had same problem. Replace Blower Motor. Over a 100 dollars at local parts store, but found online for half price. About 30 minutes to replace. http://www.rockauto.com/catalog/raframecatalog.php?carcode=1431961&parttype=6916
6 screws to remove glove box, One plastic nut on kick panel and 3 screws hold the blower to the air box.
SOURCE: black smoke on my nissan terrano when you put
black smoke usually indicates to much fuel being delivered. If this is the case you need to correct it soon or you will damage the catalytic convertor. What year is the vehicle and how many miles on it? Is there a check engine light on? this info would help
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have checked the pollen filters, although dirty did'nt help with heat getting in cabin, still blowing ambient
fixed heater, unclipped hose from engine inwards to heater and hose into engine from heater,
low pressure garden hose flushed, got rid of some gunk and grit.
undid bottom radiator hose and flushed with low pressure water again, more gunk and rust flakes
reattach bottom hose and flushed engine with garden hose, got more gunk out.
reattched hoses and filled with 100% coolant/antifreeze while engine running
ensure heater and fan on max output and continue to top up coolant as it goes dwn
took about 20mins but heater started to blow hot and coolant purged air
check for leaks from hoses and clips on tight before quick drive
heater will work but takes longer to heat up with 100% coolant :)
top up coolant the next day if required and happy driving
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