Thermostat installation

KNSHOLT

MEMBER
2002 NISSAN SENTRA
6 CYL
FWD
AUTOMATIC
119,000 MILES

When installing a thermostat in a nissan sentra, what is the direction to align the jiggle valve?

Tuesday, December 28th, 2010 AT 5:59 PM

9 Replies

DOCFIXIT

MECHANIC
18,828 POSTS

Hello,

Here is a guide to show you how to install the thermostat.

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

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Tuesday, December 28th, 2010 AT 6:04 PM

SENTRA09

MEMBER
1 POST
2002 NISSAN SENTRA
4 CYL
2WD
AUTOMATIC
74,000 MILES

I just had my emision testing and my car failed
The fault code is P0128 Coolant Thermostat (Coolant Temprature below thermostat Regulating Temp. I am assuming this means I need to replace the thermostat. I just need to know how hard is it to replace. Where is it located and should I just
pay someone to do it or is it easy.

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

RASMATAZ

MECHANIC
75,992 POSTS

Should be located in a removable housing at the engine end of the upper radiator hose

Drain about 1 gallon of coolant from the radiator
Remove this housing
Make note how thermostat is installed
Clean both surfaces
Install new thermostat and gasket
Re-fill coolant slowly to prevent an air locck
Start engine and look for leaks
Run engine to normal operating temperature with heater on
Re-check coolant level

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

GOTTAQUESTION

MEMBER
1 POST
2001 NISSAN SENTRA

Engine Cooling problem
2001 Nissan Sentra 4 cyl Front Wheel Drive Automatic

Engine is overheating

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Drain the cooling system.
Disconnect the negative battery cable.
Remove the lower radiator hose.
Remove the water inlet and take out the thermostat.

Install gum ring to thermostat Install thermostat with jiggle valve or air bleeder at upper side
To complete installation, reverse remaining removal procedure.
Fill the cooling system.
After installation, run engine for a few minutes and check for leaks.

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

2CP-ARCHIVES

MEMBER
4,540 POSTS
1999 NISSAN SENTRA

Do you know where the thermostat is located?

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

JDL

MECHANIC
16,098 POSTS

What is litre size of engine? I was looking at 2.0L engine. The upper radiator hose goes to thermostat housing.

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

NISSANSENTRASE99

MEMBER
1 POST
1999 NISSAN SENTRA
4 CYL
FWD
AUTOMATIC
95,000 MILES

My nissan recently started not to heat up. My gauge stays on cold. I was told that the thermostat is most likely the problem since everything else works fine. I am told to just follow the radiator hose to the thermostat housing and then remove and replace. But I cannot find what they are talking about. There is one hose that is attached to what looks like housing with a yellow sticker on it that says not to open while hot. Is this the correct area? Could you please send me a pic or diagram. Everywhere I look to find information they do not have a 99 nissan sentra. It is either for a 95 quest or something other. Also could you tell me what else if anything I need to do to fix this problem? Thank you.

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Monday, December 9th, 2019 AT 8:51 PM (Merged)

ZACKMAN

MECHANIC
4,202 POSTS

Locate the upper radiator hose on the radiator. Now follow that hose towards the firewall.

Raise the vehicle. Remove passenger side tire and wheel well cover. Locate P/S and water pump serpentine belt. Your thermostat housing is attached to the water pump. Make note of where the bolts are coming out of. There are three different sizes and they will give you grief if you don't pay attention where they are from. They fit but won't seal, and WILL damage the housing.