2.3 Coolant

[geuzer]

i have a 1998 2.3 galaxy 141,000miles running well on shell optimax

ive noticed that she warms up then sometimes goes cooled then runs warmer

a little then normal then cooled you see what i mean

very random but no over heating at all

i'm thinking thermo stat needs changing or maybe some more sinister

Edited August 3, 2010 by geuzer

[chrispb123456]

Hi there

Sounds like thermostat and/or the rubber gasket around the stat, allowing coolant to pass around it.

[turk90210]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

[turk90210]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

[geuzer]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

 

 

usally the temp gauge needle stays in between the N and O for normal running.

when sitting in traffic in warm weather it might movew up tto the R then the fan might come on.

but of late i noticed it first at the weekend

the gauge was sitting in the top end of the first block and the N .

then it would drop to begging of the first block (before the N).

this was on a three hour journey no traffic on A roads some slowing for roundabouts n lights nothing major

[geuzer]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

 

 

usally the temp gauge needle stays in between the N and O for normal running.

when sitting in traffic in warm weather it might movew up tto the R then the fan might come on.

but of late i noticed it first at the weekend

the gauge was sitting in the top end of the first block and the N .

then it would drop to begging of the first block (before the N).

this was on a three hour journey no traffic on A roads some slowing for roundabouts n lights nothing major

[geuzer]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

 

 

usally the temp gauge needle stays in between the N and O for normal running.

when sitting in traffic in warm weather it might movew up tto the R then the fan might come on.

but of late i noticed it first at the weekend

the gauge was sitting in the top end of the first block and the N .

then it would drop to begging of the first block (before the N).

this was on a three hour journey no traffic on A roads some slowing for roundabouts n lights nothing major

[geuzer]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

 

 

usally the temp gauge needle stays in between the N and O for normal running.

when sitting in traffic in warm weather it might movew up tto the R then the fan might come on.

but of late i noticed it first at the weekend

the gauge was sitting in the top end of the first block and the N .

then it would drop to begging of the first block (before the N).

this was on a three hour journey no traffic on A roads some slowing for roundabouts n lights nothing major

[geuzer]

If your doing alot of town stop/starting driving this could be the normal operation of the electric fan when in traffic. It depends on what you call running warmer/cooler, do you notice a big change or does the needle move just past normal running temp before coming down. If its a big change but your sure its not overheating I would first look at the temp sensor, they are never pinpoint accurate (but we all expect/assume them to be)they are just a guide.

 

 

usally the temp gauge needle stays in between the N and O for normal running.

when sitting in traffic in warm weather it might movew up tto the R then the fan might come on.

but of late i noticed it first at the weekend

the gauge was sitting in the top end of the first block and the N .

then it would drop to begging of the first block (before the N).

this was on a three hour journey no traffic on A roads some slowing for roundabouts n lights nothing major

[geuzer]

Hi there

Sounds like thermostat and/or the rubber gasket around the stat, allowing coolant to pass around it.

 

it looks like to me the sat has gone but i didn't know the coolant could run around it

ive not done much on thermo stats since my RS2000 Mk2 days

[sparky Paul]

Hi there

Sounds like thermostat and/or the rubber gasket around the stat, allowing coolant to pass around it.

 

it looks like to me the sat has gone but i didn't know the coolant could run around it

ive not done much on thermo stats since my RS2000 Mk2 days

 

What Chris is referring to is leakage around the rubber gasket between the thermostat insert and the thermostat housing. This arrangement is only fitted to the early 2.3i Galaxys, it was replaced on 98-on cars by an external thermostat to correct some issue with the cooling. To confuse matters, your 1998 car may have either arrangement, and you will need to determine which it is.

 

The thermostat housing on 98-on 2.3i engines is empty. On 98-on cars, the thermostat is the lump with three pipes attached to it, on the pipework between the original thermostat housing and the radiator. If you need one, they are (unfortunately) around