temp issues

wiltshire landyman · Feb 20, 2011

i spent 2 hrs last weekend cleaning my rad after it was running hot and even the twin kenlowes wouldnt get temp down,even after cleaning there wasnt much of an improvement

so today i removed the rear panel on the allisport rad housing the kenlowes and this is what i found

so another 2 hrs spent cleaning
i also thought i would replace the thermostat just on the offchance of it being faulty,but there wernt one in there

so thermostat done and rad cleaned and antifreeze added

once started it takes approx 5 mins at idle for the heater to be blowing hot

on a drive the temp guage goes to nearly the red but when you check under the bonnet the rad isnt yet hot neither is the exspansion bottle

the guage moves up to the red once the rad is hot and the fans bring the temp down a bit but the temp guage doesnt seem to be reading true or is it?

its a 4.2v8 rrc.

what can i check or how can i check if guage is reading true?

ta

njh2 · Feb 20, 2011

.....is the rad hot all over?

njh2 · Feb 20, 2011

...sorry, hadn't finished that post...if it is but not overly hot, and all the other pipes and tanks give the indication that it isn't getting as hot as the gauge suggests i would change the sender unit first.
What do the kenlowes use to switch themselves on?

Nick.

wiltshire landyman · Feb 20, 2011

njh2 said:
.....is the rad hot all over?

difficult to say as once the rear cover is on ya cant see the rad,i was just feeling the top of the rad

wiltshire landyman · Feb 20, 2011

njh2 said:
...sorry, hadn't finished that post...if it is but not overly hot, and all the other pipes and tanks give the indication that it isn't getting as hot as the gauge suggests i would change the sender unit first.
What do the kenlowes use to switch themselves on?

Nick.

the kenlowes are on a switch in the cab..mmm sender might be worth a go

Stuballsed · Feb 20, 2011

wiltshire landyman said:
the kenlowes are on a switch in the cab..mmm sender might be worth a go

My advice, get a pucker sender from a steelership. Still only about £10-£12. Went through two faulty ****part ones tring to diagnose simillar problem. Save yourself the heartache and get one you know (should) works.

wiltshire landyman · Feb 20, 2011

Stuballsed said:
My advice, get a pucker sender from a steelership. Still only about £10-£12. Went through two faulty ****part ones tring to diagnose simillar problem. Save yourself the heartache and get one you know (should) works.

will get one orderd up monday

123tom123 · Feb 20, 2011

how did you manage to clean your rad with it all caked like that? mines the same atm and hose pipe didnt touch it

wiltshire landyman · Feb 20, 2011

123tom123 said:
how did you manage to clean your rad with it all caked like that? mines the same atm and hose pipe didnt touch it

just kept at it hosing front and rear of rad for about 2hrs

Phil_b · Feb 20, 2011

Hose pipes on rads are generally bad idea, learnt that cleaning out tractor ones, it just. Wets the dust further and turns it into a bigger gooey mess, airline with fine jet tip ftw clean in a fraction of a time

3.5 efi · Feb 20, 2011

^ it's not dust, it's caked on mud.

wiltshire landyman · Feb 20, 2011

Phil_b said:
Hose pipes on rads are generally bad idea, learnt that cleaning out tractor ones, it just. Wets the dust further and turns it into a bigger gooey mess, airline with fine jet tip ftw clean in a fraction of a time

taint no dust

3.5 efi said:
^ it's not dust, it's caked on mud.

yep...hose pipe worked well for me..

and if it was dust:doh:.where would i magic a compressor, airline,and fine jet tip from..

123tom123 · Feb 20, 2011

rite ill have another go with the hose then hopefully it works.

3.5 efi · Feb 20, 2011

use a soft brush to help disperse it.

123tom123 · Feb 20, 2011

cheers ill have to give that a go, i also need to straighten the fins i bent with the jet wash from my first attempt

3.5 efi · Feb 20, 2011

jet wash mine, just don't get too close.

123tom123 · Feb 20, 2011

yer that was my mistake

, i didnt know the fins were that fragile

Badger · Feb 21, 2011

It'll help if you can wash from the inside out as the dirt accumulated was forced into the rad from the outside in, less resistance to push the crap back out

wiltshire landyman · Feb 21, 2011

have shed a little light on the possible problem solving

the original engine was a 1983 3.5 v8 on carbs and the engine in there now is a 1993 4.2 v8 efi

the original guage is in situ but the sender is out of the 4.2 so maybe they may not be compatable?

temp issues

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