Question about 1992 Toyota Corolla

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1992 Geo Prizm/Corolla 1.6 L 120k mi, Fan 1 intermittent

1992 Geo Prizm/Corolla 1.6 L 120k mi, Fan 1 (radiator) runs for fraction of second and then quits when cold when relay is removed and restored (clicking both off and on is heard). Does not run all the time (hardly ever) when at normal temp. Jumpered fan and is very good. Checked wiring at plug, good, took apart relay box all new looking inside. Jumpered radiator sensor to no avail due to this sensor being wired to at least two other sensors, one being a vacuum switch and something else on the terrible schematic I dl'd. Need a good legible wiring schematic and I can fix myself. .4 ohms on radiator sensor when cold for all three of the used ones I have (two came from salvage yard).

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  • specialtynee Apr 29, 2010

    I am not stupid enough to let it overheat but it will keep climbing if you let it. The highest I let is get was just below the orange band.

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  • Master
  • 462 Answers

What is the problem?
is your car overheating?

Posted on Apr 29, 2010

  • Greg Stefan May 05, 2010

    ALLDATAdiy.com , $ 26.95 a year subscription for your vehicle.

    All info and w/diagramms there.

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What is the location of the ecu for 1990 geo prism?


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Where is engine fan fuse on 1991 geo prizm?


toyota corolla. it is.
but that depend on what engine option
the cooling systems totally vary by engine.
also with or with out air conditioning......???? it too can turn on this fan!
look it up on alldata.com
buy the FSM book
or
post engine, size. better the real engine name off the hood sticker
works BEST.
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Aug 11, 2014 | 1991 Geo Prizm

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1995 geo prism is heating up


Have a coolant system pressure test done to check for system leaks. check coolant level at the radiator cap. have a compression test done to check for head gasket or cracked head.. Check fan operation and if you have a viscous fan hub replace it . Have a flow test done on the radiator to check for blocked cores.

Oct 27, 2013 | 1992 Geo Prizm

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Jun 09, 2012 | 1992 Geo Prizm

1 Answer

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Some thing too check:
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Check for broken or cracked fan blades itself.
Check radiator cap, (no gasket tears).
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Could be coolant temperature sensor/switch (from computer) going bad?
Check radiator hose(s) (too soft, may collapse)?
In some rare cases:
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Could be water pump.
Could be blown head gasket(s).
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The radiator fan on my 1992 Geo Prizm will not come on. I have tested the fan motor via a wire by pass and confirmed the motor is good. I have also replaced the relay and still the fan will not come on....


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1 Answer

1992 Geo Prizm fan


your relay fuse is going bad replace it asap or your going to have to replace your head gasket next

Jan 21, 2009 | 1992 Geo Prizm

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