Question about 1994 Geo Prizm

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What does the map sensor do on 1994 geo prisim

My 94 prizm started running rough during the cold spell.Put it on a scope and the only thing that was out of specs was the map sensor

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  • Geo Master
  • 20,706 Answers

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.
and to test a map you need the graph and you need to compensate for altitude and local weather (barometer readings) to correct what you see.
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.
your car is a toyota corolla in snake clothing.
the toy FSM covers this is find details.

Posted on Apr 22, 2014

6 Suggested Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75817 Answers

SOURCE: how to install power steering belt on 97 geo prizm

Most likely the belt and pulleys are shiny if you look at them, replace the belt, while you have the belt off try and clean the glaze off the pulley groves, this will make the new belt "grip" better and avoid slipage.

Posted on Aug 27, 2008

  • 9 Answers

SOURCE: unlocking radio for 94 geo prizm

If the radio is displaying LOC then head on over to http://www.delcolockcodes.com and they can unlock it for you. I hope this helps!!!

Posted on Dec 05, 2008

  • 142 Answers

SOURCE: 1994 GEO Prizm Fuel Guage

You need to replace your fuel sending unit. It is located inside of the gas tank.
Please remember to rate this solution.

Posted on Feb 12, 2009

Molson02536
  • 3854 Answers

SOURCE: geo prizm stereo radio wiring diagram

1994 Geo Car Stereo Wiring Schematic
Car Radio Battery Constant 12v+ Wire: White
Car Radio Accessory Switched 12v+ Wire: White/Black
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Yellow
Car Stereo Dimmer Wire: Red/Green
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White
Left Front Speaker Negative Wire (-): Black/Blue
Right Front Speaker Positive Wire (+): Blue
Right Front Speaker Negative Wire (-): White/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Light Green
Left Rear Speaker Negative Wire (-): Light Green/Black
Right Rear Speaker Positive Wire (+): Gray
Right Rear Speaker Negative Wire (-): Gray/Black

Posted on Dec 23, 2009

  • 2926 Answers

SOURCE: 1994 geo prizm serpentine belt

ledsled378_55.jpg
1.8 L with AC

Posted on Jan 22, 2011

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1 Answer

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Jan 19, 2013 | 1994 Geo Prizm

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Hi i have a 1994 geo prizm i have this problem; when the car is running or moving, suddenly the check engine light goes on, when that happens the car starts to fail then i have to put the car in neutral...


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On the 94 geo prizm the back seats fold down, They are a split back seat so there is a button on either side on top of the upper seat.

Nov 11, 2010 | 1994 Geo Prizm

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My 94 geo prizm sputters and jerks during accleration. I have replaced the fuel filter and pump, distributor cap and rotor and plugs and wires and still have the problem. Any ideas?


for that cost you could have taken it to a mechanic and had the compretion tested, that is what needs to be done. at least 90psi and all cyliders sould be within 15% to that.

Mar 16, 2010 | 1994 Geo Prizm

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I have a 94 Geo Prizm LSI 1.8L. I have a real odd hesitation, sputter. Before the car shut down, it drove fine, except that it you maintained a steady speed the car would sputter - but not when...


Try exchanging the MAP sensor from the other "good running" car. What I think you are experiencing is a flat MAP which fails to read more than the minimum. A MAP sensor out on these cars will make it run absolutely terrible and die as you have indicated.

By unplugging the TPS sensor you are effectively putting the car in "limp" mode. In this mode it ignores a potentially bad TPS, O2, and MAP sensors and or circuits.

Jan 19, 2010 | 1994 Geo Prizm

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1994 Geo Prizm LSI running one day won't crank next day


turns over and crank are the same thing,
so you are saying it does crank over but no start,right?
you need to determine if you have at least 50psi of fuel pressure in fuel rail at reed valve.

Dec 22, 2009 | 1994 Geo Prizm

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