1996 Chevy Blazer code P0440

TKATT

MEMBER
1996 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
111,000 MILES

My wife took our 96 blazer a few days ago filled it up with gas. A few miles down the road it died. After towing it home and squirting a little starting fluid into the intake it started and seemed to run ok. I drove it a few days and worked ok. Today I took it and after driving the service engine light came on with a code P0440 Evap emission system. Any help please

Tuesday, March 10th, 2009 AT 7:51 PM

9 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Thanks for using 2CarPros.com!

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Tuesday, March 10th, 2009 AT 7:59 PM

TKATT

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5 POSTS

Thanks for the response, where on the engine are the vent and purge solenoid and fuel tank pressure sensor. Also could a leaking intake manifold gasket cause this.

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Tuesday, March 10th, 2009 AT 8:55 PM

BLUELIGHTNIN6

MECHANIC
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Only 2.2L have both the vent and purge solenoid. The 6cylinder has the purge solenoid and it is located on top right rear of engine, pictured below..

The fuel tank vapor pressure sensor is located on top of the fuel tank.
Yes it is possible that a faulty intake gasket will cause this code to appear and symptoms to occur.

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Tuesday, March 10th, 2009 AT 9:04 PM

TKATT

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5 POSTS

How tough of a job is replacing the intake gasket can someone with a medium amount of mechanical ability do this or is it a job for the pros

thanks again

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Tuesday, March 10th, 2009 AT 9:24 PM

BLUELIGHTNIN6

MECHANIC
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It will take a reputable repair shop 3 - 4 labor hours to do this job, depending on if it is upper or lower gasket being replaced.

I don't really like to tell people if I think they can handle a job or not so what I am going to do is post the procedures. You can read over them carefully and decide for yourself if you think you can make this repair safely and correctly. We will be here every step of the way if you do decide to take the project on yourself so don't be afraid to ask questions until you finish the job if you need to ;)

First I will need to know if this is the upper or lower manifold that needs the gasket?

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Tuesday, March 10th, 2009 AT 9:37 PM

TKATT

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I think it would be the lower, when you say the upper are you talking about the one below the air intake plenum? The only reason I mentioned the intake is it has been seeping antifreeze for awhile now and I just wonder if it has gotten worse and this is the result. If you could post the procedure that would be great

Thanks for all your help

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Tuesday, March 10th, 2009 AT 9:51 PM

BLUELIGHTNIN6