Question about 2005 Nissan Altima

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2005 Nissan Altima 3.5 no heat after changing cooling fluid. Is there a bolt to remove to burp the system

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You may need to loosen a hose at the engine or the highest point and bleed the air out, no bleeder on this engine.

Posted on Nov 16, 2009

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Why does my nissan altima 2005 not blowing hot air unless it runs over 1500 RPM 3.5 lt motor rad is clean also heater core is clean if it runs done the rd at over 1500 RPM lots of heat


take it to a radiator specialist shop as it indicates that there is an air lock in the cooling system that needs to be removed so that full coolant flow can be achieved

Dec 30, 2016 | 2005 Nissan Altima

1 Answer

Will an air pocket in the coolant system cause it to overheat or over pressurize on a 2001 Nissan Sentra ?


1. The radiator cap if working correctly it will release pressure in the system provided the cap you have is the correct pressure setting. If you are having a problem with pressure then replace the cap with a new radiator cap with the correct pressure setting. Do not use a cap with a pressure setting other than the original equipment pressure spec. So you do not go to the parts store and buy any radiator cap on the shelf that fits because they come with different pressure ratings and some of these will be totally unsuitable for your car.

2. If the pressure valve is stuck in the "old" cap the pressure release system will not work.

3. Overheating
Air pockets in the cooling system can definitely cause overheating and can retard coolant flow through the system. If you are draining the radiator to replace the coolant or replacing the radiator you need to follow the correct procedures for bleeding air out of the system for that particular engine after coolant refilling. Some engines have bleeder screws on the cooling system to assist in the air bleeding procedure and some don't.

There are various causes for overheating so don't assume it will necessarily be solved by bleeding any remaining air from the cooling system and replacing the radiator cap with one that works.

Other causes can be...........
1. Faulty cooling system thermostat. (Replace the Thermostat)
2. Faulty water pump, especially if the impellers have corroded away or have disintegrated in the case of those design genius water pumps with plastic impellers. (Replace the water pump)

3. Cooling fans not working and if so the cause needs to be tracked. Check that your fans are kicking in. If the engine is overheating the fans should be running because they will switch on when the coolant reaches a specific temp and well before the coolant gets excessively hot.

4. A partial blockage in the coolant passages inside the engine but not in the radiator if you have a new one. If the coolant is not changed at the required intervals(frequently the case with many owners) or is over diluted with water you can get a build up of debris. If products like stop leak have been used in the system this can create similar problems with partial blockages inside the engine coolant passages.

5. A compression leak into the cooling system.
If you have bled air from the system and have continuous air bubbles in the cooling system I would suspect a compression leak. In that event a basic leak down test will show if you have compression gasses leaking into the cooling system and from which cylinder(s). The spark plug is removed and compressed air is forced into the cylinder via the spark plug fitting and air bubbles will show up in the coolant of there is a leak into the cooling system.
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Have the problem with overheating addressed immediately. Running the engine with an overheat condition will cause expensive engine damage many times the cost of fixing the overheating issue.

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Dec 29, 2015 | Nissan Cars & Trucks

1 Answer

2005 nissan altima 2.5 main bearing torque plz


2.5 L engine main bearing cap bolts
Step 1 bolts1 through 10 - 27 to 31 ft-lbs
Step 2 bolts 1 through 10 - Tighten additional 60 degrees
Step 3 bolts 11 through 22 - 15 to 18 ft-lbs
>

Feb 21, 2015 | 2005 Nissan Altima

1 Answer

Torque specs for 2005 nissan altima 2.5


According to Haynes Manual, 2005 Nissan Altima, using BRAND NEW cylinder head bolts:

1 - Tighten in sequence (as pictured) to 37 ft-lbs.
2 - Tighten an additional 60 degrees.
3 - Loosen all bolts completely.
4 - Tighten in sequence 26 - 32 ft-lbs.
5 - Tighten in sequence an additonal 75 degrees.
6 - Tighten in sequence an additional 75 degrees.

Mar 23, 2012 | 2005 Nissan Altima 2.5

1 Answer

Nissan Altima tring to change my transmission fulid and filter


thats why you have to remove the frame and for this you need an engine support and the average mechanic will charge you arround 100 bucks to do it
some rental stores have them some dont good luck eithor way you go but for god sake be carefull

Dec 31, 2009 | 2005 Nissan Altima

1 Answer

My car is altima 2005.it is heating when drove more thane 100 k/h.Please could help me?


Hello, have you done a maintenance on the cooling system, radiator flush, thermostat replacement, hoses, water pump etc? Also, has anyone taken off the radiator shroud? believe it or not, the shroud plays a big roll in the cooling of the engine.

If its not the cooling system

Is there any oil in the radiator fluid, or water in the oil, the oil will almost look like coffee creamer. check for white/blue smoke coming from the tail pipe, if you can do a pressure test in the cylinders, it may be the head gasket then.

Dec 28, 2009 | 2005 Nissan Altima

3 Answers

Heater blows cold air at low speed and idle 02 nissan altima


I worked at a Nissan dealer for 18 months and we'd get a lot of these in. The cold heat at idle is accompanied by a sloshing noise from behind the dash - you've got an air pocket in the heater core. What we used to do was lift the front end of the car about 3 feet off the ground using the hoist and take the rad cap off. Then we'd run the engine at a fast idle (jam a screwdiver against the throttle stop to hold it fast or put a slight weight on the pedal if it's Electronic Throttle Body. Run the heater on full heat and the engine like this. You'll see the rad 'burping' as the air in the cooling system travelling to the highest point it can - the open rad cap. Top up with a 50/50 mix of coolant and water as you go. When it burps no more, you have a full cooling system and should not suffer any more "cold heat".

If you do this yourself, PLEASE use jack stands, block the back wheels and put the parking brake on!!!

answer from a Nissan mechanic, (not me)

Dec 10, 2009 | 2002 Nissan Altima

1 Answer

Where is the thermostat?


Follow the upper radiator hose back to the engine block. There will be a cover plate with bolts holding it to a housing. This housing contains the thermostat. It has to be taken apart with the 2 possibly 3 bolts and a gasket. A LOT of fluid will pour out when you break the seal and open it. It maybe very difficult to get out without special tools to get to the bolts. You will then need to reseal it with rtv or supplied gaskets.

May 11, 2009 | 1999 Nissan Altima

1 Answer

How do I replace the alternator on a 2005 Nissan Altima?


first things you have to do to change nissan altima 2.5 alternator?
1- disconnect battery
2-from the top of alternator there will be 3 thing u have to open one is with bolt 12 mm and second is with screw star.
3-turn the starting full right there will be small cover 2 plastic clip and one 10 mm bolt.
4-from the down take 12 mm and turn the pulley which is bellow alternator with press.
5- take belt out (note that u have to draw the map of belt be4 take it out.
6-and install alternator back again in same steps.

Dec 26, 2008 | 2005 Nissan Altima

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