Mechanics

MITSUBISHI ECLIPSE SENSOR PROBLEM

2000 Mitsubishi Eclipse • 150,000 miles

Happy Holidays
My wifes eclipse has code P1400 reoccurring even after replacing pres differential sensor (from auto zone). I also checked EGR and vacuum lines, all good. My scanner shows engine load data which fluctuates normally I would say, though not positive about that. I don't see any other data stream to watch operation of pressure sensor or circuit. Can you help? All equipment is standard except for Injen air intake which it has had for several years.
Thanks, Joe
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Joecilmi
December 19, 2012.



Is the engine temp up to normal? If the temp is below 160 the egr system will not work correctly. I got caught in this situation a while ago and took me a while to figure it out

Roy


ASEMaster6371
Dec 19, 2012.
The temp gauge is reading half way like it usually does and my scan tool says 80 centigrade so its good. Anything else?
Thanks


Tiny
Joecilmi
Dec 20, 2012.
The temp came up to 96 centigrade fully warmed up


Tiny
Joecilmi
Dec 20, 2012.
Ok. Is there vacuum at the transducer?

Roy


ASEMaster6371
Dec 20, 2012.
Thanks Roy,
There is full vacuum at the transducer


Tiny
Joecilmi
Dec 20, 2012.
Ok, go to the erg solenoid and see if one side has vacuum as well.

Check for 12 volts to the solenoid with key on

Roy


ASEMaster6371
Dec 20, 2012.
Just getting back to it after a great holiday, hope yours was too. There is 12volts at the egr solenoid and vacuum in the hose. I took off the egr to examine it. It was clean and moved easily when I put vacuum to it. BTW, There is no egr sensor on the valve or anywhere near it. There is a round plastic vacuum delay valve. What else could be causing code P1400? The computer goes into closed loop and the car runs perfectly.
Thanks again for helping, Joe
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Tiny
Joecilmi
Jan 6, 2013.

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