Isuzu Trooper Owners Club UK™

Browndoff · Posted: Sun Jun 23, 2013 21:06 Post subject:

Thanks Guys!

If the temperature goes up again, it's now clear that I'll have to get a replacement radiator! Oh, well - time to wipe the cobwebs off my wallet!

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d12 · Posted: Sun Jun 23, 2013 21:24 Post subject:

Don't forget to let us know how you get on when it's changed Wink

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Gribble · Posted: Sun Jun 23, 2013 23:18 Post subject:

Probably a duff temp sensor ,might even be on of those rare Aussie ones that cools right off when the Trooper turns left and overfuels so pumps out black smoke -
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jacksdad1963 · Posted: Mon Jun 24, 2013 12:04 Post subject:

This has reminded me....my troop also overheats Shocked

Only when I hold the throttle open for more than a few minutes, I can cruise at 70 on the motorway all day, but push it to 80 and within a mile or 2 it goes into the red and the engine light comes on: i switch on the interior fan on hot and full speed, drop back to 70, and within a mile its back to normal, just flick ingition off/on and the light resets as well Very Happy

I know the answer.....new radiator! no ifs or buts, its partially blocked and so not working fully at the limit, I've also tried everything to unblock it!
I will take the rad to my local specialist, and if the funds allow, will have it re-cored with copper, otherwise a standard one will do thumbup

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1999 3.0 TD Duty SWB
3" Body lift, 3" suspension lift, diff dropped, balljoints flipped, extended panhard, Tree sliders, Superwinch, +2" Pro Comps, 33" Mudders: Nearly finished!

kennymac · Posted: Mon Jun 24, 2013 20:14 Post subject:

Browndoff · Posted: Mon Jun 24, 2013 23:59 Post subject:

Jacksdad Wait a day, or two, and see what results I get with the replacement of the fluid in the viscous-fan-clutch. It's a realy cheap [less the £10, including delivery] and easy fix - so if it allows me, too, to get up to 80 mph [aren't we very wicked!] and hold it there - then YOU should try it too!

Browndoff · Posted: Wed Jun 26, 2013 20:43 Post subject:

I took out my 'Suzi' for a motorway test-run this afternoon - it's coolant-system worked very well - thought you'd hardly approve of the test! I took it up to 78mph and it began to heat-up - from 1/2 to just to 3/4 of the dial-gauge range. Even going up really long hills - which, previously had forced me down to 60mph, or less - I was still belting along - with no change in the thermometer.

At 80 it began to creep up some more but I held it so for 5 miles and even pushed it to 90 for a mile, or so, and still it only just reached the limit and quickly dropped back to 5/8 of the range, when I eased it back to 75mph. It then slowly dropped back to 1/2 again.

Success! The cleaned-out-radiator plus the enhanced cooling [through replacement of the fan-clutch viscous-fluid] meant the overheating at 'normal' motorway speed was a thing of the past! There are always limits to the speed to which one can push an automobile - but it's good to know that the limit is about where it was with my last car!

Oh! and BTW - when I re-did the 'twist of cardboard' in the fan test - it shredded it completely! The new fluid in the fan-clutch transfers much more torque to sucking the cooling air through the radiator. I still can hardly hear the fan [and no, my hearing is fine!] but it now blows a very noticeable draught through the engine-bay.

eithan h · Posted: Wed Jun 26, 2013 20:59 Post subject:

The temp gauge shouldn't go past halfway so you still have an issue so change the rad.

Browndoff · Posted: Wed Jun 26, 2013 21:15 Post subject:

"The temp gauge shouldn't go past halfway" At 90mph???? Come on! I was floggin' it up a steep hill!

ALL vehicles have an upper speed limit - I just wanted to improve my Suzi's limit so that she could cruise the motorways just like a saloon-car!

The gauge still won't go past halfway if I keep the speed at, or below, 75mph - and the legal limit is 74mph - so who's complaining!

Cam · Posted: Wed Jun 26, 2013 21:30 Post subject:

If you tow with your Trooper then watch the gauge rise very quickly on the uphill stretches, if you think you've cured yours then trust us, your kiddin yourself

Its only a matter of time before you will have no choice but to change your radiator

I'll use mine as an example, mine was fine or so I thought, then I went down to the Borders with the Caravan and on the hills I was loosing power and the temp gauge was rapidly climbing towards the red, get up the hill and the gauge came back down to normal temp, drive the same road without the caravan it was fine, not long after this I was out for a run and on a long hill about 2.5/3 miles the temp gauge went up to the red with the eml coming on at about 40 mph, I changed the radiator recently and the Temp gauge has never gone over half regardless of the speed or if the Caravan is on the back

bear in mind that someone has already posted on this very thread that they have run their Trooper for over 2 years without a fan so how can the fan possibly be the issue?
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2001 Trooper 3.0 Citation Lwb. 33" BFG's, Superwinch X9, 60mm lift, Monroe Adventure Shocks, Hid Spots and a Yaesu FT7900 2m/70cm's Radio
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eithan h · Posted: Wed Jun 26, 2013 21:34 Post subject:

i should think at 90mph the airflow through the rad is greater then what the fan could pull in therefore rendering the fan useless when the vehicle is being driven and only works when stood in traffic like most cars fans do.
i give up telling him and i noticed theres 3 different threads within the cooling section where he's banging on about this mod i think a couple need to be locked off.

adz1973 · Posted: Wed Jun 26, 2013 21:37 Post subject:

Its like educating Pork
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Browndoff · Posted: Wed Jun 26, 2013 21:54 Post subject:

Oh, please Guys! Don't be angry with me! Maybe I will need a new rad if I ever have to use the Suzi for towing - I'm just hoping to avoid the expense as long as possible! I kinda thought that others, too, might benefit if I succeeded!

As for the 'multiple posts' - Mea culpa! Guilty as charged, yer honour!

It must be said though, that for anyone who DOES HAVE a problem with the performance of the FAN - the fluid replacement really is a much better way to go than fitting an electric fan! It keeps everything 'original' on the vehicle and it's VASTLY cheaper and easier. Perhaps more to the point, the operation of the fan varies with the cooling-requirement of the engine - exactly 'as designed'!

hillbilly col · Posted: Thu Jun 27, 2013 6:40 Post subject:

When you flushed radiator did you refill it with HOT water or COLD .......cold water is much better for keeping temp down Wink

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LTM NO.41

Twister · Posted: Thu Jun 27, 2013 9:45 Post subject: