Question about 1987 Nissan Maxima

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I have replaced everything related to the water cooling system except the heater coil, yet on hot days, high speeds and climbing the engines get really hot.

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Take off the highest hot hose and expell any air in system(just releasing the clip when the engine is hot may do it)

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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2002 F250 5.4l gets hot until I turn the heater on high?


have cooling system flushed and clean outside of radiator,get a new thermostat that opens earlier,like 105 degrees instead of 112 degrees.

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When you fill the system make sure the heater is turned on. An aftermarket hose coupler with a backflush kit can be inserted in the heater line. Or with the engine cold, disconnect the rear heater core hose from the intake and fill the heater hose as the high point in the system.

Another possibility is if you have a Radiator electric cooling fan. Water cooling is not adequate. Your electric cooling may not be turning on or may be missing high speed.

Bad head gasket. Aeration coming from a leaking cylinder can force hot compression gases into the cooling system. This will disrupt water flow and put hot exhaust gases into the water system.

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2001 VW Beetle heater not heating.


If both your heater hoses are hot, the heater core is circulating fluid. If only one is hot, and one is cool-then the core is plugged or has an air block, or a valve in the heater line is closed if that applies.
If the engine stays at normal operating temperature, doesn't overheat at all, there should not be a problem with the water pump.

The problem may be with the doors in the heater case not operating properly.

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I have a 2003 alero with the v-6 what happened was driving down the road the heater works fine. then all of a sudden it was blowing cold air and the temp gauge started climbing. it started blowing how air...


Sounds like the water pump is cavitating . Replace water pump. Check coolant level also. Open the bleeder valve usually located on thermostat housing to remove air from system. close valve when coolant is present while filling. close radiator cap and top off recovery bottle to correct level. These engines are prone to overheating, do not let temp gauge get in the red.

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I recently purchased a 2003 Subaru Legacy with 101,000, automatic transmission. The car had the head gaskets, timing and water pump done around 100,000 miles. I noticed last night that the engine temp...


Usually, if you shut the heater off, then the temperature will climb. The interior heater will actually assist in cooling the engine's coolant.
Subaru head gaskets rarely ever fail by the way.
First, pressure test the cooling system and make sure you have no leaks.Also check the radiator cap for condition and fitment.Then check and/or replace the engine thermostat.
Subarus are generally speaking, extremely reliable vehicles and don't often show these types of issues.

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My wife's Focus loses power if the car is driven up hill on a hot day. She either has to keep the speed above 65 or let it drop down below 40. This only happens in the summer months when the temp is...


Does the engine temperature climb too high? She may need the radiator core blown out with compressed air from the inside to get rid of the bugs and other debris. Does the anti-freeze look clean or rusty? Flush and clean the system if it looks rusty--fill with fresh 50/50 water/anti-freeze. Check the action of the cooling fan(s). They should turn freely by hand when cold. Check the fuel pump pressure and replace the fuel filter. Does the check engine light come on? The O2 sensor(s) may be getting tired. Replace if a lot of miles on it (them).

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It only gets hot when going speeds faster than 65 or 70 mph for 5 min or so. I can push in the clutch and coast and the temp gauge will start to climb rapidly let out on the clutch and cool back down. I...


Hi

Your engine thermostat is stuck open and this is what is causing the problem. You will need to have a new thermostat fitted - Usual cost is between $15 to $30. Maybe less depending on thermostat type.

How the thermostat works is it remains in a closed position within the engines coolant circulating system to allow the engine to heat and reach its optimum operating temperature. The thermostat then opens to allow the coolant to circulate freely. When the thermostat becomes faulty it fails to respond to the temperature of the coolant. What has happened it that it has opened and is stuck in an open position allowing the water to circulate too freely around the engine - you will see a brief rise in temperature when the engine is worked hard but as soon as you come to rest the temperature falls back again as the thermostat is not closing when it should.

Solution - replace thermostat and all will be well!

Hope this helps. Please remember to rate my answer. Many Thanks.

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My 2003 Explorer overheats when I turn the A/C on.


Q: Temp starts to climb by how much? If the vehicle interior is hot"over 90" , keep in mind the heat in the vehicle is being absorbed by the a/c and carrued out to the "condensor" in front of the engine radiator. Engine temp should be expected to climb somewhat. As the interior cools down the less heat is taken to the font and forced through the engine radiator. It should peak out ,then staer deopping or stabilize. On initial entry of vehicle on hot days it would help to open the windows for a mile or so to purge excessive heat from passenger compartmentw/AC OFF. OUTSIDE CAN BE 90 AND THE INTERIOR OF A CLOSED UP VEHICLE CAN CLIMB TO 120 DEGREES + mID 80'S IS HANDLED WITH GREATER EASE FOR A COMBINATION OF TECHNICAL REASONS OF WHICH WOULD BORE YOU.It sounds like all is well so be cool(pun) and don't waist money chasing a ghost. Happy trails. Oh, The auxillary fan is good to speeds up to 35 mph. Above 35 the forced air from the vehcle speed does the fans job.

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