Isuzu Trooper Owners Club UK™

IanP · ** Joined: 13 Jun 2005 Posts: 100 Location: North East

Just changed my engine driven radiator fan with partially seized viscous coupling for an electric one. Result is 40 miles further on a full tank and a lot less noise from the engine bay. Not fitted a thermostat, but decided to use a manual switch to see how often I need the fan. Not too sure that it would give sufficient cooling for heavy duty towing though, but so far no down side. Very Happy

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fatso_1234 · ** Joined: 07 Jul 2006 Posts: 58 Location: Canada

What was the fan out of?
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1991 Bighorn LWB 2.8 TD 4JB1-T

IanP · ** Joined: 13 Jun 2005 Posts: 100 Location: North East

It was a new 15" fan off e-bay (spal I think), and fitted across the radiator cowl using 2 aluminium bars. Probably not super efficient, but is only needed when in heavy traffic.

cowman · Posted: Mon Aug 13, 2007 18:23 Post subject:

DID YOU USE A RELAY BETWEEN THE SWITCH AND FAN ,IF NOT IT WILL MELT THE SWITCH IF YOU RUN IT FOR LONG PERIODS.

Philp · Posted: Mon Aug 13, 2007 19:47 Post subject:

My chevy has an electric fan fitted by a previous owner out of something japanese. He didn't use a relay and the bulb in the switch used to light up when it was off as the fan windmilled and the motor became a generator. I also one day put my hand behind the switch and found it was red hot. Needless to say I bunged a relay in pronto after that so thats good advice. That said even my 300HP 5.7L V8 only needs it when idling or in heavy traffic so a cold old diesel should be fine.
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Phil

96 or is it a 98 Isuzu Bighorn Lotus