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1991 geo metro 4 door3/25/2023 ![]() High temperature indicated.ģ1 MAP Sensor circuit - Signal Voltage Low Vacuum.ģ2 MAP Sensor circuit - Signal Voltage High Vacuum.Ĥ4 Idle switch open or improper adjustment.Ĥ5 Idle Switch Circuit Grounded or Improper Adjustment.Ģ1 Throttle Switch circuit (Manual Transmission).ġ3 Oxygen Sensor circuit. Low temperature indicated.Ģ5 Intake Air temperature (MAT) Sensor. Low temperature indicated.Ģ1 Throttle Position Sensor Signal Voltage High (Automatic Transmission).Ģ2 Throttle Position Sensor Signal Voltage Low.Ģ3 Intake Air temperature (MAT) Sensor. High temperature indicated.ġ5 Coolant Temperature Sensor circuit. You can find my post on this subjectĨ7-88 Sprint Turbo,89 & later Metro, Tracker, Storm.ġ4 Coolant temperature sensor or circuit (open)ġ5 Coolant temperature sensor or circuit (shorted)Ģ1 Throttle position sensor or circuit (open)Ģ2 Throttle position sensor or circuit (shorted)Ģ3 Intake air temperature sensor or circuit (open)Ģ5 Intake air temperature sensor or circuit (shorted)ģ1 Barometric pressure sensor or circuit (89 -95)ģ2 Barometric pressure sensor or circuit (89 - 95)ģ3 Manifold Absolute Pressure (MAP) sensor (90 - 91)Ĥ2 Camshaft position sensor circuit (94-95)Ĥ4 Oxygen sensor or circuit - lean exhaustĤ5 Oxygen sensor or circuit - rich exhaustġ4 Coolant Temperature Sensor circuit. Their vast archive of Geo Metro information. This project would have been a lot harder without ![]() I would also like to extend my thanks to all the folks at.įor all of their suggestions. Prices and my 120 mile per day commute I couldn't be happier. My new Geo Metro is running great and getting about 50MPG. Hopefully this is of some help to someone. I have probably forgotten some important points as I am writing this in retrospectīut as I remember I will include them. You damage the gasket when you remove the engine coolant sensor housing. You will also want to make sure that you have some gasket paper handy in case The old engine back onto the engine I just installed. This required putting the temperature sensor housing I took out with Sure enough the fan sensor from the ’94 wasĪ different diameter (and probably a different spec) than the ’91 fan Once I got this working theĬar would run but it started overheating because the radiator fan sensor wasn’t I re-installed theĭistributor from the 1994 and it started right up. Somewhere to operate the ignition system in the ’94. The engine changed over it would turn over but it wouldn’t start presumablyīecause the distributor from the ‘91 wasn’t sending the right signal ![]() This will eliminate any electronics incompatibilities notably distributor,Ĭarburetor sensors, intake manifold sensors, engine coolant sensors and other Probably change the block only and leave anything hooked to the wiring harness Note: When switching engines from Metros made in different years you should Here is the obligatory finished engine shot. Is that a guy could do this in a day or two in a decent shop with good jacks Stands, a makeshift engine hoist made from logs, rope, and a 6"圆"īeam, and plenty of empty beer cans lying about. Now understand this was strictly a white trash operation with logs for jack That being said, I, withĪ little help from my friends, was able to accomplish this task on two weekends. This is not an endeavor for the faint of heart. ![]() I did this because I really wanted a 4 door commuting car withĪC. Stereo) into a 1994 Geo Metro 4 door with a worn out automatic transmissionĪnd blown engine (but a great stereo and air conditioning and red instead ofĪqua-baby blue). Install engine and manual transmission from a 1991 Geo Metro 2 door (with crappy Use at your own risk like anything you read online! I have not edited or verified any of the info on this page. The images might show up, they might not. The link is dead, but I thought the info was useful so I found it using the Internet Archive Wayback Machine. Important Note! This page is somebody else's work. Geo Metro automatic to manual transmission switch
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