2003 eclipse 4cyl engine egr where is it?

Cold start sensor is defective and not enriching the mixture for cold weather start. Its usually in the inlet manifold/water jacket and works the ECU until the air/water temp has reached a pre determined point.

If pumping the accelerator seems to work ( it actually does nothing) then there is an indication of a sensor failure either in the accelerator position sensor or accelerator motor. run the fault codes and replace any faulty sensors.

It's a valve that is on a pipe from the exhaust to the inlet side, egr means exhaust gas recirculation and it to aid in cold starts and also emissions, it's usually at the rear of the engine to one side, hope this helps, it will possibly have a switch or plug coming from it

Change the ignition coil

no back-firing or anything like that. Double check firing order and how about your plugs/in good shape? How old is the plug wiring? Does the Eclipse have cam senors? If so, I would check them.

Check the air inlet boot going from the air filter to the intake for rips or holes. If rips exist, this would allow air to bypass the filter and mass air flow sensor and will lead to a check engine light appearing. The code would read "too lean, bank 1." If this problem is allowed to continue for long periods of time, the EGR ports will have to be cleaned out and maybe even the intake.

P1494 code can cause by EGR lift sensor.

When the engine is cold,disconnect the EGR sensor connector and clean the contacts.

Reconnect the EGR connector and reset code.

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If the code does come back then I will clean the carbon under the EGR valve (or replace it)/
the EGR air passage MUST be clean also.

Please order a EGR base gasket before you start this job.

It's very time consuming but it preventive you must do.

This should free up the movement on the EGR.


I will ran a FULL TANK of Chevron gas to clean out the injector also.


Reset the code and you should be fine.


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Throttle body, IAC or EGR valve.

could be a cold start issue. there is a water temp sensor near the thermostat. when you start your engine first for the day it will show the engine to be cold and therefore the computer will do a 'cold start', meaning using more fuel. but this should throw a computer code. if you are not getting any codes from the computer then check for a vacuum leak. like the EGR vacuum line for starters. the egr should be closed when the engine is cold and open as the engine warms up.

has a vaccume leak check your lines to the egr valve