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I had an interesting time with this one, and thought I would share my story... My 95 Bronco had been posting a 122 for about a month. It also had a high idle and was shifting rough.
122 - Throttle position sensor below minimum voltage.
I tested the TPS with a voltmeter, and deducted that the TPS was faulty. I removed the throttle body, and replaced the sensor. After replacing the TPS I was still getting the 122:banghead , so I looked at what else could be causing the code. After about a week of searching here, reading the Haynes manual, and talking to a mechanically inclined friend of mine, the only thing we could come up with was a faulty TPS. I removed the throttle body (again) and inspected the sensor. I noticed the "spring loaded" piece was not rotating back.:doh0715: I took it back to autozone and got a new one, confirmed it was working properly and installed it.
VIOLA! no more 122! I guess the moral of the story would be to check new parts prior to installation:duh
122 - Throttle position sensor below minimum voltage.
I tested the TPS with a voltmeter, and deducted that the TPS was faulty. I removed the throttle body, and replaced the sensor. After replacing the TPS I was still getting the 122:banghead , so I looked at what else could be causing the code. After about a week of searching here, reading the Haynes manual, and talking to a mechanically inclined friend of mine, the only thing we could come up with was a faulty TPS. I removed the throttle body (again) and inspected the sensor. I noticed the "spring loaded" piece was not rotating back.:doh0715: I took it back to autozone and got a new one, confirmed it was working properly and installed it.
VIOLA! no more 122! I guess the moral of the story would be to check new parts prior to installation:duh