Question about 2000 Jeep Grand Cherokee
The quick fix is to clean and reconnect all the electrical connector to the engine.
Pay close attention to the EGR lift sensor and the purge valve connector on the driver side fender.
I recommend CRC Mass Air Flow sensor cleaner (at major auto part store) or electrical parts cleaner (at Radio Shack).
After the cleaning then clear the code.
Fill up a full tank of Chevron to clean out the injectors.
If the same code returns then you will spend time on the EGR valve.
Carbon will built up over time and it will block the movement of the EGR valve and the EGR air passage.
Order a EGR base gasket before you start the job.
The easy route is to order a new EGR valve,but it can be clean if you have time. The air tube is a tough on. A vacuum clean can help to speed up the process.
After you put the valve and sensor then do a code reset.
This should fix you P1494 code problem.
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Posted on Aug 31, 2009
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Posted on Jan 02, 2017
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