Question about 1990 Geo Prizm

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My 1990 Geo Prizm GSI will start, but it won't keep running when the weather is cold.

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  • Geo Master
  • 14,036 Answers

Could be faulty engine coolant temperature sensor but sound like engine not getting enough fuel could have clogged fuel filter or fuel injectors need cleaning.

Posted on Jan 01, 2013

Testimonial: "Thank you!"

  • Angela Schrader Jan 03, 2013

    The engine coolant temperature sensor was first changed because it was very inexpensive. That didn't do the trick, so I had my fuel injectors cleaned and new fuel filter. This fixed it. Thank you.

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  • Master
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Sounds like the automatic choke control on the carburator is shot! It is stopping the proper flow of gas from getting to the engine...replace it! Also make sure you have recently replaced the fuel filter; moisture in the gas will stick to the filter and freeze up making it hard for gas to get through!

Posted on Jan 01, 2013

  • Angela Schrader Jan 01, 2013

    Thank you!!!

  • Angela Schrader Jan 03, 2013

    The fuel filter and fuel injectors were cleaned, and this fixed it. (This year Prizm did not have a carburator) Thank you so muc!

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: blower motor location 1990 geo prizm

In my 1992 it is underneath the dash on the passenger's side, but you have to take the whole front panel including the glove box off to access it. When that is done there is a rectangular housing and a more circular housing. On the bottom of the circular housing there are three screws that hold the blower motor up. Remove the screws and it will drop right out.

Posted on Dec 22, 2008

  • 10 Answers

SOURCE: fuel pump installation 1990 geo gsi storm

the fuel pump is located inside the fuel tank. drop the fuel tank and unscrew the top of the fuel pump and replace the fuel pump

Posted on Feb 14, 2009

  • 14 Answers

SOURCE: My girls 1990 Geo Prizm keeps stalling. After it

next time it stalls pull the plug wire from the spark plug. have an extra spark plug with you and stick it in the boot. lay it across a known ground and turn the car over. its probably not firing.. sounds like its an ignition module faulty that acts up when it gets hot

Posted on Jun 05, 2009

  • 1986 Answers

SOURCE: location of fuel pump relay on a 1990 Geo Prizm

under the hood in a fusebox near the firewall

Posted on Sep 10, 2009

  • 196 Answers

SOURCE: 93 Geo Prizm, car won't start

check gas and filter

Posted on May 08, 2010

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1 Answer

What does the map sensor do on 1994 geo prisim


new spark wires. old wires hate, cold damp weather.
spark plugs, cap,rotor wires, try the 60k mile tuneup. per the opr.guide.
magic happens....
the map is ok.
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is the check engine light glowing running?
most maps read like this, 1bar maps.
http://www.fixkick.com/sensors/my-map.html#Jeep

i bet your's is ok. the map.
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the toy FSM covers this is find details.

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Is the Prizm an interference type engine that would be seriously damaged if the timing belt breaks?


there are 3 engines, all made by toyota.
if it has a belt, some engines, are not free running.
find your engines. then go to gates belt do com and look it up
and see last column, "interference'?
or join a toy forum and ask there, after finding the engine code.
3 motors.
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89-02
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for docs?
ebay
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Geo Prizm factory service manual, Duh?

http://www.ebay.com/sch/i.html;jsessionid=D19D723C2EDB4A9FE12E7C01C0677129?_sacat=0&_nkw=geo+prizm+shop+manual&_nkwusc=geo+prizm+shop+manaul&_rdc=1

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1997 geo prizm won't stay running sputters and dies upon acceleration


, like it ain't gettin fuel; probabley a fuel pump or fuel injecter, fuel filter, something along those lines. Start with the filter its cheapest

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replace alternator belt.you need to loosen alternator upper and lower belt then push alternator forward to slip off drive belt.if you have the prizim GSI. you need to raise and support the vechicle safely.remove the power steering and air conditioning drive belts.then loosen the lower mounting bolt and nut from the alternator bracket.then remove the alternator drive belt.

Dec 28, 2012 | 1990 Geo Prizm

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1997 geo prizm won't turn over


Won't crank or won't start ?

Dec 24, 2012 | 1996 Geo Prizm

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1992 geo prizm - radiator hose broke and replaced, but car won't start now - ideas?


you said it cranks then you said it wont turn over if it wont turn over you might have get the engine to hot and seized the engine please spesifiy if the engine turns over or not

Jun 09, 2012 | 1992 Geo Prizm

1 Answer

What is the correct tire size for 92 geo prizm


It depends if your gsi or lsi
gsi says, p185/60R14
lsi is a 13 inch tire, one said, P155/80R13
Maybe you need to check your suspension?
There might be a placard on driver door post that has tire size?
I just looked at tirerack, it said 175/70-13

Jun 24, 2017 | 1992 Geo Prizm

1 Answer

Fan runs all the time when car is on


I did the same thing and had the same problem. I believe I replaced a ten amp fuse in the engine compartment and fixed it. Really pissed me off.

Oct 27, 2008 | 1990 Geo Prizm

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