Hello all,
I just bought a 97 Z28 with 34K miles on it and the service engine light came on as I was driving to work.

I went to a local Autzone and they pulled a P1441 trouble code.

The problem description for the is " Evaporative Emission (EVAP) system flow during non-purge Chevrolet only"

Can anyone decipher what the blank this means?

Is this a serious issue?

I would really like to try and avoid a dealer visit if possible.

Otherwise the car seems to be running very well (except for the &$%%$#%*! skip shift but that is something else....).

Any and all assistance would be appreciated.

Thanks

Rick S

 

There may be a leak in the EVAP plumbing, or the EVAP valve is stuck.

 

Thanks for the direction, I just looked up the diagram on shbox and I will start looking there.

Is this valve something I can clean or will it need to be replaced?

I am thinking that because the car sat quite alot in a garage the valve may be dirty or rusted.

Thanks again.

 

The valve would have to be replaced, carbon build up and oxidation prolly took it's toll on the selinoid. It pretty much is a T fitting that allows it to circulate or be vented into the intake. It is not a life and death situation for a motor. You might lose 1 or 2 MPG.

 

You can fix the skip shift by unpluging it, but if your getting in it you don't have to wory about it. It is an inconvinenice when your trying to keep it quit.

 

Is disconnecting the skip shift covered in another post?

Thanx

 

Well the service engine soon light cam back on again...P1441 code again.

Replaced the purge valve & solenoid and verified the hoses running to the manifold & the short hose leading to the other valve looking item with an vent tube (yellow shaded items in diagram).

Any other ideas would be appreciated!

Thanks again.



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Try replacing your gas cap, no kidding.

 

The funny thing is I have heard that gas caps can cause trouble on GM cars but I thought it could not be something that simple.

I'm heading for Autozone right now.

Thanks AGAIN and AGAIN.

 

I replaced the fuel cap and everything was OK for 3 days then the service light came back on again and it was the same code (1441).

After beating my head against the wall I pulled the new gas cap off and found dirt and corrosion around the end of the filler neck where the cap is supposed to seal.

I took some very fine scotch brite pad and cleaned the surface up and put the cap back on.

It now has been 5 days with no light so I think I finally nailed it!

Thanks for the great suggestions!