Question about 1993 Geo Prizm

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1993 Geo Prizm lack of horsepower

I have a '93 Geo Prizm LSI 1.6 L with 84,000 miles. The car has been great since we bought in '94. Lately, I've had a significant loss of horsepower and the gas mileage is reduced. I had a complete tune up and that didn't help. I had to replace two cracked exhaust manifolds. My mechanic said the back pressure was high and changed the catalytic converter. That still didn't help. My rings look good and and I'm not burning oil. Any ideas?

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Clean the mass airflow sensor (or replace it outright) and change your oxygen sensor. Those are very big contributors to fuel mileage. Also, verify that the new plugs are gapped correctly.

Posted on Aug 02, 2008

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I to have the same issue.. I can floor the gas pedal and it has no horsepower. oil is clean and all but it acts like its being "held back" if that makes since..no check engine light so not sure if its a sensor or what but not a vac leak (i looked for that)..

Posted on Dec 15, 2009

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1 Answer

Does a 1993 geo prizm 1.8L lsi have two temp sensors?


buy the manual. and RTM,
and yes, Air , water, and on a stock car up to 3 coolant sensors.
The ECT runs the ECU. tells ECU coolant temp.
my guess is the coolant gage is dead? RTM
on most 93 car, the Guage has its own sensor, (isolated)

89-02
joint venture, GM/toyota with 3 engine used.
1.8L or 1.6L
toy engine, 4aFE, 7AFE or 4AG
open hood look
or use the GM RPO tag
or Use the VIN to find motor used.
for docs?
ebay
search
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

Feb 18, 2013 | Geo Prizm Cars & Trucks

1 Answer

I need a picture diagram of a 93 geo prizm pulley system


PRIZM
alldata dot com
pulley? you mean the belt routing, is it V belt or Serp.?
how many belts? (big clue that)
this is a toyota engine 1 of 4 types
the used more than one.
which is yours.
engines options, not many cars have only 1 engine.
so first post the vin or the toy engine name.
or a photo

1.6L all 4L GE and FE, and GE 105 or 130HP.
in 93 the option of
a driver airbag, and a new 1.8-liter 4-cylinder engine optional on LSi trim.

when working on any engine, first ID the engine.
if posting, tell the helper the VIN or the Engine ID>
all GM cars have a RPO tag on the glove box door.
this too, can be decoded, but I can not.
there are the options.
sorry i dont have a PRIZM, there are not that many on the road.
you could join a PRIZM forum. that would make this far more easy.

Jan 20, 2013 | 1993 Geo Prizm

1 Answer

Have a 93 geo prizm changed the front bearings, but still have a grinding noise going straight and turning left when i turn right it is quite


CV?
ever do a CV check, FWD has CV axles, and do not last forever.
nor for life of engine. about 300k miles.
service them. or get rebuilts.
better yet , pay for diagnosis, as cars this old all have , more failures.
some are dangerous to you , family and others on the road.

Dec 28, 2012 | 1993 Geo Prizm

1 Answer

I was doing an oil change on my car 93 geo prizm lsi and i noticed i drained the oil from the wrong pan what did I drain if not the engine oil??


You must have pulled the plug on the tranny, If it was red, it is an automatic, if it was thick, it is a standard. Either way, you need to fill it back up with whatever it was you dumped out. Find out what kind of tranny fluid your car takes, probably dextron, not sure, if it is a standard tranny, 90 weight gear oil. Then get back to pulling the oil plug on the engine and getting that taken care of. Hope this helps.

May 17, 2010 | 1993 Geo Prizm

1 Answer

93 geo prizm....the airbag light


Don't touch this vehicle,the airbag has been deployed and a new whell attached without resetting the code.

Mar 24, 2010 | 1993 Geo Prizm

1 Answer

1993 Geo Prizm Lsi Harmonic Balancer


Yes a harmanic balancer from tha corolla is the same thing. I had to do the same thing with my 95 geo. It works out to be a lot cheaper buying for a toyota than a geo.

Jan 11, 2009 | 1995 Geo Prizm

1 Answer

Cranks sometime


You have burnt/pitted contacts in the starter solenoid, very common on Nippondenso starters, which the Geo uses. If you can get just the contacts rebuild it, otherwise replace the solenoid and or the starter, if you have really high miles it is better to replace the whole starter with a rebuilt unit from any quality rebuilder, Delco is a real good one, The best price I found was at Rockauto.com, $72.00 for a Delco rebuilt unit. Contacts are availiable from Ohiomotor.com

Aug 20, 2008 | 1996 Geo Prizm

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