BAD IDLE after Emissions Test

85VicWagonGuy

LVC Member
Joined
Jan 11, 2005
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Location
Goodlettsville
1998 DEVILLE's idle is loco after Emissions Test
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Immediately after our yearly emissions test (this year they hooked up the scanning computer), idling problems started. Last night it was idling at 2600rpm when I parked in my garage after a 10 mile drive. Sometimes it's idling at 1500-1700rpm at red lights.

And one night the display went nuts as soon as I turned the key to ON. There was a crazy clicking sound in the trunk that I thought might be the fuel pump.

Anyone else have computer issues after an emissions test?
 
Getting these codes:

PCM P0122
Throttle Position Sensor Circuit Low Voltage

IPC B1552
Keep Alive Memory Error

ACM B1983
Device Power Circuit Low
 

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