1.9 non turbo diesel (1996 estate)

 I posted a message some time ago  about "STOP" light not working.

Shortly  after I posted message about dash lights then they started working
80% on start up (After oil change and a bit of Gunk spray clean up on engine
block may have caused this - who
knows? Weather as been very hot as well)

Bit worried now as the "STOP" light comes on with the temp warning light at
irregular intervals when the engine is running and up to normal temp - in
fact showing 80C. (Peugeot handbook states 90c for normal temp) Fan operates
when at 80c and even when engine switched off /ignition on, will operate
down to under 70c.

 It does switch off at a lower temp as I waited for 15 minutes and the fan
did start but stopped after a few minutes. Unlike my earlier 405 it does not
run on for 12 minutes after ignition switch off.

Could this just be a faulty sensor/faulty temp gauge or maybe water pump
problem? Rad water
level is ok, no sign of overheating,  and no cap lift off to discharge
water. No sign of bubbles in water etc.

Are the temp sensors colour coded? where on engine block?

Would it be prudent to have a compression test just to see if the head
gasket is going - (New head gasket and only done 7000 miles since renewal)
No sign of any oil leakage.

Thanks for your help











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"sid"  wrote in message 
news:42d79f30$1_2@spool9-west.superfeed.net...

> 1.9 non turbo diesel (1996 estate)
>
> I posted a message some time ago  about "STOP" light not working.
>
> Shortly  after I posted message about dash lights then they started 
> working
> 80% on start up (After oil change and a bit of Gunk spray clean up on 
> engine
> block may have caused this - who
> knows? Weather as been very hot as well)
>
> Bit worried now as the "STOP" light comes on with the temp warning light 
> at
> irregular intervals when the engine is running and up to normal temp - in
> fact showing 80C. (Peugeot handbook states 90c for normal temp) Fan 
> operates
> when at 80c and even when engine switched off /ignition on, will operate
> down to under 70c.
>
> It does switch off at a lower temp as I waited for 15 minutes and the fan
> did start but stopped after a few minutes. Unlike my earlier 405 it does 
> not
> run on for 12 minutes after ignition switch off.
>
> Could this just be a faulty sensor/faulty temp gauge or maybe water pump
> problem? Rad water
> level is ok, no sign of overheating,  and no cap lift off to discharge
> water. No sign of bubbles in water etc.
>
> Are the temp sensors colour coded? where on engine block?
>
> Would it be prudent to have a compression test just to see if the head
> gasket is going - (New head gasket and only done 7000 miles since renewal)
> No sign of any oil leakage.
>
> Thanks for your help


Sounds more like a faulty max temp switch.
Peugeot tend to mount all the coolant sensor switches on/near the thermostat 
housing.
Easiest option would be to try a new switch.
Also easiest way to find it, is wait till the light comes on, then try 
unplugging each sensor until the light goes out.

> Sounds more like a faulty max temp switch.
> Peugeot tend to mount all the coolant sensor switches on/near the
thermostat
> housing.
> Easiest option would be to try a new switch.
> Also easiest way to find it, is wait till the light comes on, then try
> unplugging each sensor until the light goes out.



Tried the brown connector at thermostat housing. Gave it a bit of a wiggle
and the fan stopped.The fan goes into "full on" mode with the switch removed
and ignition on.

Out in town traffic today and temp goes up to 90c before fan cuts in (normal
mode)  looks like a loose connection caused the problem.

Nostalgia mode going back 20 years - never had electrical problems with my
old Ford Capri - or engine problems  - or mechanical problems. It did rust
and getting more than 22mpg on a long run was a problem, but then it was way
before speed cameras.

Think I'll have a search on ebay to see if any Capri's for sale. I'm fed up
with all this sophistication in cars. All I want is for the thing to start
and stop.

Many thanks for your help





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