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Topic: 4L 2009 Nissan Frontier Overheating

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Lappnathan
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Posted: Jul 30 2015 at 6:44pm \| IP Logged

Cooling sys. pressure tested. New T'stat installed. New
Rad caps installed. Blows water out of reservoir

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Nathan L Lapp

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Posted: Jul 30 2015 at 7:56pm \| IP Logged

..

I haven't had one over heat in over 20 years.. So I forgot every thing about it that I ever knew...

COOLING
Knowing the driving conditions that are causing the problems can help pinpoint the proper solutions.

First the coolant
Has the cooling system been completely purged of air including the heating system?
Is the coolant the proper type and mix fresh and consistent with manufactures recommendations?
Is the over flow bottle at the correct level when hot and cold?
Mechanical
Is the pressure cap maintaining pressure?
Are all the passageways in the radiator core flowing properly free of crud?
Is the coolant pump pumping at full capacity?
Are the impellers or housing in the pump eroding or cavitating?
Is the drive system for the pump slipping?
Is the thermostat working correctly?
Is the cooling fan stock, the drive system and thermal sensing system working properly?
Is the heater system connected to the coolant system as it should be?
Is the A/C or automatic transmission add more than normal heat to the system?
Is the lower radiator hose being sucked closed without a large coil spring in it?
Air Flow
Is there ‘bug juice’ mud or the wrong type of paint on the cooling core?
Is the grill, bumper and air dam stock and in good shape?
Bad tuning of the engine like wrong ignition timing or wrong fuel/air mixture ratio.
Bug screens, add on lights or recovery winches in front of the radiator core
Brakes dragging
Running in the wrong gear.

Helpful do it yourself cooling tricks
Add hood bug/rock shield that forces more air into grill
Add a larger air dam below bumper that forces more air into grill and helps suck hot air from under the hood.
Add an automatic transmission pre-cooler behind the cab or completely reroute the system behind the
cab to remove the added heat from in front of the radiator core
Reverse flush the radiator core with a garden hose in the lower/output hose.
Using mild pressure wash the bugs and stuff from the radiator core squirting from the back side.

.
NOTE…
If all else fails turn off the A/C, turn on the heater, roll down the windows and slow down!

Good Luck.. Don S

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PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
Fort Worth

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Posted: Jul 31 2015 at 6:11pm \| IP Logged

I had this happen to a couple of cars and it was a head casket.

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Yooper Scooper

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Posted: Aug 01 2015 at 3:16pm \| IP Logged

Yooper wrote:

I had this happen to a couple of cars and it was a head casket.

That's what I am thinking too ^^^^.

Take radiator cap off,, and with the motor running check for bubble's. Bubble's are an indatation of Head Gasket leaking.

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Barney
2013 SV V6 Frontier KC/AT/2WD; Previous 20 yrs ~ '93 I4 Hardbody KC/AT/2WD, Sold.

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