David Jenkins
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| posted on 28/7/06 at 12:08 PM |
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Sounds like one good step forward.
Now I suggest that you check your temp sender & gauge - it may be lying to you!
David
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David Jenkins
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| posted on 28/7/06 at 01:13 PM |
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Just spotted this post:
LINK
It reminded me that there's another thing you can look at - the fan belt. If it's a bit slack it won't spin the water pump very
well, causing overheating.
David
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DarrenW
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| posted on 28/7/06 at 01:27 PM |
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I dont have the std Micra fan, ive used an aftermarket one of unknown pedigree (a mate had it lyiong about). It is a blow type fitted in front of the
rad. Ill guess its about 11" diameter. When on the floor its capable of lifting itself off the flow - dont know if this is indicative of
strength but it does seem powerful (it has several blades and has SPAL moulded into the casing). Rad thermostatic switch is std as far as i know. Fan
kicks in at 95 and off at 93 (ive took note better to try and help you out). I dont have an expansion tank fitted hance why i have what is probs best
described as an overflow bottle (actually an empty crap pop bottle). Without bottle mine too blew approx half a litre out onto road - now it doesnt,
just into the bottle and then seems to suck it back in when cooling down after a blat.
You can check if the fan is correct way round by using a smoke source, a mate checked it with cigarette smoke for me.
I still have a sneaky feeling your gauge is telling you porkies but dont know a quick way to check that. It may also be that the fan switch in the rad
is too high a temperature or is not covered by the water. Ref std thermostat in engine ive heard of people running without in summer no problem. Ive
also heard of people drilling a small 3 or 4mm bypass hole in it.
Assuming no air locks and plumbing is OK i kind of guess you should be safe.
Are you utilising the std water temp sender location and is the sender itself matched to the gauge? Are they new or could they be old and inaccurate
at all.
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DarrenW
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| posted on 28/7/06 at 01:30 PM |
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I was just thinking, is your water nice and clean or brown and crappy. Not many Pintos are perfectly clean but a flush can be worthwhile - solved some
of my earlier problems. I was horrified when i removed a block plug and nothing came out. I had to scrape / push around with a terminal driver and
then get some witre in the hole to clear crud from the bottom of the block water jacket. Apparently this happens if someone in the past has been
running without antifreeze, the rust etc just collects and sets hardish.
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02GF74
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| posted on 28/7/06 at 02:33 PM |
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quote:
Originally posted by DarrenW
I dont have an expansion tank fitted hance why i have what is probs best described as an overflow bottle (actually an empty crap pop bottle). Without
bottle mine too blew approx half a litre out onto road - now it doesnt, just into the bottle and then seems to suck it back in when cooling down after
a blat.
yep, same set up on series land rovers.
quote:
Originally posted by DarrenW
You can check if the fan is correct way round by using a smoke source,
hmmmm, you should be able to feel the air flow by putting you hand close.
quote:
Originally posted by DarrenW
I still have a sneaky feeling your gauge is telling you porkies but dont know a quick way to check that. It may also be that the fan switch in the rad
is too high a temperature or is not covered by the water. Ref std thermostat in engine ive heard of people running without in summer no problem. Ive
also heard of people drilling a small 3 or 4mm bypass hole in it.
yep- get a thermometer and meausure tmeperatures. re: tiny hole, v8 thermostat has this, for the very reason stated - unless you by cheap bripat
one no big deal to drill a hole
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phoenix70
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| posted on 28/7/06 at 03:10 PM |
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quote:
Originally posted by David Jenkins
Sounds like one good step forward.
Now I suggest that you check your temp sender & gauge - it may be lying to you!
David
I'm pretty sure it is, but it shoudn't be, as the sender was bought with the gauge.
[Edited on 28/7/06 by phoenix70]
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phoenix70
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| posted on 28/7/06 at 03:19 PM |
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quote:
Originally posted by DarrenW
Are you utilising the std water temp sender location and is the sender itself matched to the gauge? Are they new or could they be old and inaccurate
at all.
The temp guage and sender are supposed to be matched and both are new, but I'm not convinced that the gauge is telling the truth.
quote:
Originally posted by DarrenW
I was just thinking, is your water nice and clean or brown and crappy.
The water used to be crappy and brown, but with all the filling and re-filling has cleaned it up quite a lot, haven't taken the block plug out,
may try that just to check the flow.
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phoenix70
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| posted on 8/8/06 at 09:07 PM |
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A Quick update for anyone interested.
Stuck flush in the rad to flush it out, that improved the situation, but the car was still slowly heating up all the time (funny thing, it actually
cooled better, the faster I went). The next step I decided to do was to make a cowling for around the radiator to force air entering the nosecone
through the radiator instead of around, and what a difference that made, it still heats up quickly when stationary, but on the move, the car sits a
constant 90c. The last thing I'm thinking of doing is adding some water wetter just to give a little extra cooling ability.
Thanks to everyone for there suggestion and help, now I can enjoy my car without watching the temperature gauge all the time
Cheers
Scott
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