My temperature gauge is all the way up but my radiator us pretty cool. The radiator hose is super hot… the over flow jug is full to the max… The fans jump on and everything but where does this problem come from is it do to a bad thermostat?
I also found a set of KYB shocks and springs that lowers the car 1.7” whould that be a good set up?

 

if its the top radiator hose then I do believe your thermostat is ****ed. On the VQ's the top radiator hose goes directly into the thermostat, I dont know about VG's though, so I may be wrong.

 

change ur t-stat and radiator cap...

 

im having the same problem still... i just flushed my radiator out for like 2 hours last weekend and i have replaced my thermostat within the last 5 months but im still getting hot when i come to a standstill like in a drivethrough or traffic... the fans come on and basically stay on after it warms up but this still occurs... o and btw im pretty sure when i was flushing my radiator that the nasty fluid was coming out of the top hose therefore the bottem hose runs the coolent through the thermo and it comes out of the motor through the top hose...unless my coolent system is just totally wacked..o and also i have air conditioning but no heat???? clueless

 

try changing your coolant temperature sensor... it like $19 at autozone

 

thermostat is on the engine, by the top hose. does your coolant move when the car is parked, and idling at temp (look thru the radiator cap)?

 

no heat means there is air in the system. There are a ton of threads about how these cars are a PITA to bleed.

 

Yeah, it is the top hose... If ur talking about that big one on the left side.

Im guessing thats what it is i was gonna get it changed when i was getting my water pump changed but i had other things to do wish id done it now.

ill check it out thanks for the heads up.

ummm yeah... the temp goes up while im just sitting there in traffic or going down the hwy really sucks but i dont wanna damage anything else under there because of this. but my ait condition works fine the digital climate control just doesnt light up so i never know whats on unless i hit the auto button and reach under tha pass. side of tha dash board and flip that switch. dont know what its called tho.

 

hope it's the t-stat...but i say get rdy for a new radiator.

 

yeah, the lower hose is a return line back to the water pump, and if the coolant is cold the tstat blocks it (just from the radiator loop... not from the block or heater loops). there's basically 3 separate loops of coolant branching off after the coolant goes from the pump to the block to the heads: passenger-side of lower intake directly back to water pump (short 'bypass' hose.. also where your coolant sensors are), passenger-side of lower intake to radiator to thermostat (only returns to water pump if tstat is open), and driver-side of lower intake to heatercore/upperIM/TB/IACV back to water pump.

 

Already have a new radiator in there i got it around like march 09...

 

so when are you changing ur t-stat and rad cap?

 

ASAP...money is tight but im pushing for the next two weeks...i should have had that t-stat changed when i bought the new water pump wasnt thinking. what would u recommend?

 

well, if your engine is overheating i wouldn't wait any longer....plus check ur thermal sensor (right beside coolant temp sensor) too....it should have between 20 to 25 ohms between sensor and engine body wen engine is FULLY warmed up...

 

well turn your heaters on and crack open the bleed screw on top of the upper intake manifold! If you are uncertain about the thermostat remove it and do not reinstall a new one! Refill the system and bleed it and if you're still overheating you surely have a clogged radiator or system!

 

sounds like you need to change the T stat. the other guy with the temp guage that is going up in traffic is caused by a air bulbble.

the temp sensor is what tells the fans to turn on so if there kicking on the sensor should be okay

 

i had the same problem.
on vg motors the top hose leaves from the t-stat. that means it's working.
if the fans are on HIGH but sucking out cold air then it's a bad t-stat.

my gauge worked. my fans worked. my heat worked. radiator was fine. turns out the water pum was the problem.

and my gauge read a lil bit above 1/2 way. in traffic she would sometimes overheat.
she stumped me for the past 3/4 days then she started leaking from behind the crankshaft.

i replaced it. she runs cooler. the gauge is below the 1/2 way mark.

 

no it doesn't. the tstat is at the end of the circuit, and prevents/allows the water in the radiator from re-entering the water pump.

as i said earlier, on the belt-side of the engine, water comes FROM the LIM to the y-split where the sensors are, then it goes DOWN the short bypass pipe (straight to the water pump) and forward through the top hose into the radiator... then back up the bottom hose and through the 'valley' to the thermostat. the heater core loop goes around the thermostat (hence why the tstat housing has that little crescent-moon shaped part on the vehicle-rear side of the tstat itself)

(source = flowchart on LC-6 in the FSM)

 

I know we are not suppose to post ebay links im not sure about others but can someone tell me if i should get one of these or should i got to a place like advance or somthing and get one. http://www.car-stuff.com/store/?N=16...294967064+2383 ill delete this if its not suppose to be posted.

 

go OEM...it's a cheap part that's very critical to your motor.

 

I think it's like 12 bucks or something at napa.

 

ok thanks guys.

 

I just found out today that my car was doing that because there wasnt any anti freeze in the redi. or the i think its called over flow jug both seemed to be empty but where does it all go because i never see it leaking anywhere i go...

 

No anti-freeze is without doubt NOT the cause of your miseries - if anything its presence will always decrease the productivity of your cooling system.

If you cant see a leak (and you are quite sure of that!) then the only alternative is that the motor consumes the water - cracked head/block etc etc or a blown head gasket ................ either way this needs to be attended to pronto or you will damage the motor.

............. and because it can be difficult to find leaks try this

 

I see that water is leaking from the passenger side of my car where the water pump is and im guessing that it is the water pump yet again.

 

I absolutely hate to break it to you but I think you have a blown headgasket by the sound of things. I recently had many of those same problems on my 4th gen and took it into multiple mechanics who all said blown headgasket. The major clue is the radiator is empty of coolant but the overflow tank is full to the max. Just got my car back a week ago and 2400 bucks later and now it runs fine as it should for $2400. They also replaced the thermostat, water pump, belts, ect.

 

Changing the thermostat is very simple and quick, I bought an aftermarket one from autozone, and put it in myself, and just used the rubber ring around my old thermostat and put it around the new one. I didnt wait for it to go out on me, as I dont like surprises! So assuming that the previous owner did not replace the thermostat, I went ahead and did that and the water pump, and the bypass hose and top radiator hose.

 

BRO i got a maxima 2006 3.5 se & install NISMO COLD THERMO & nothing Change

the heat is same with or without the thermo so what can i do did u think that the radiator cap will make Diffrent ?

 

If you have a cooling problem elsewhere, changing the thermostat isn't going to make a difference.
first, make sure you bleed/burp the cooling system properly. the 6th gen actually lists the use of a vacuum pump to purge the system of air.

next, make sure the radiator itself and water pump are in good condition. If the radiator is clogged with crap, then it's not going to do its job.

also check to make sure your radiator fans are working. easy way is to turn the AC on and see if the fans come on with it. any time your AC compressor is running, your fans should be on.

 

i know this may sound a lil stupid but its probably wise when doing a job like the waterpump to buy the replacement from nissan instead of lets say an ebay one, i ask cuz im on a tight budget but if you guys think that the aftermarket ones are crap then ill prolly jus wait out for an.oem one

 

i know this may sound a lil stupid but its probably wise when doing a job like the waterpump to buy the replacement from nissan instead of lets say an ebay one?I ask cuz im on a tight budget but if you guys think that the aftermarket ones are crap then ill prolly jus wait out for an.oem one thanks!

 

I think you said you replaced the water pump . . .? My '00 would over heat at the top of large hills. After replacing rad cap and t-stat, we pulled the water pump. I've never seen any thing like it b4 or since, but the fins were completly eaten off. New water pump and back to normal.