Question about 1994 Ford Crown Victoria
At first I had a 172 code on O2 sensor, so I changed it. I was losing power going uphill and it runs/idles bad until it gets warmed up and then it runs better.
TP low (possibly grounded or open circuit) - TPS
that suggested it's not really the sensor itself is bad, but a wiring problem!
gotta trace and make sure the ground circuit and or wiring to that sensor is not broken
as for the other 3 digit code, no idea as well. reset the ecu/ecm and read the flashes again
Ford OBD Trouble Codes
Posted on Apr 05, 2015
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Posted on Jan 02, 2017
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When the service engine soon light (Also called the check engine light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.
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