Question about 1994 Geo Prizm
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
New spark wires. old wires hate, cold damp weather.
spark plugs, cap,rotor wires, try the 60k mile tuneup. per the opr.guide.
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.
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
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Posted on Jan 02, 2017
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
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
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