QuestionHi i been have this thing going with my car,The car was runing good and one day it started stalling and idle fast and stalling,The check engine light came on and the check vehicle light came on to. So was told i need iac,so put a new IAC,new egr,new map sensor,new servo,spark plugs cap,oil change,coolant sensor,air temp sensor and gas cleaner,and clean the throttle body,I started the car and it run real good for about 20 min. now i getting these codes E14 E22 E31 E52 E71 E74 and the sound like it did when the car first started acting up,The good thing is the car not over heating no more and the check vehicle light not coming on.I have not change the gas filter i will, Can you tell me what may be wrong and what to look for?
AnswerI found the following explanations for the codes you listed:
E14--Shorted Coolant Sensor
E22--Open Throttle Position Sensor
E31--Shorted MAP Sensor Signal
E52--PCM/ECM Memory Reset
E71--Intermittent MAP
E74--Intermittent MAT Sensor Signal
I would disconnect the negative battery cable. This will zero out the codes. At this point I would rescan for codes. Unfortunately, the caddy's produce in the 1990z have electrical problems. I ran across this at one shop I worked at. We did Cadillac almost exclusively. After you get the codes rescanned, email me: marvin.saunders69@yahoo.com
