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Old 12-12-2003, 12:59 AM   #1
lowespitt
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Dizzy Take a look at my EGR code P1404

Well the car is 3 days old to me and the SES light came on and went off 3 or 4 times already. Last time it came on I stopped at Autozone and they pulled P1404 which is

"An exhaust gas recirculation (EGR) system is used in order to lower oxides of nitrogen (NOx) emission levels caused by high combustion temperatures. The EGR accomplishes this by feeding small amounts of exhaust gases back into the combustion chamber. When the air/fuel mixture is diluted with the exhaust gases, combustion temperatures are reduced.

A linear EGR valve is used on this system. The linear EGR valve is designed in order to accurately supply exhaust gases to the engine without the use of intake manifold vacuum. The valve controls exhaust flow going into the intake manifold from the exhaust manifold through an orifice with a control module controlled pintle valve. The control module commands the EGR by applying a 12 volt duty cycle to the EGR valve. This can be monitored on a scan tool as desired EGR position.

The control module can monitor the pintle position with the EGR pintle position signal. This sensor uses a variable resistor with a 5 volt reference, a signal circuit, and a ground. The signal circuit monitors changes in voltage on the variable resistor as the pintle moves.

This diagnostic will detect the EGR pintle position not returning to the learned closed position due to foreign material lodged in the pintle seating area, or due to a defective EGR valve. The VCM will command the EGR valve fully open to attempt to clear the valve of any foreign material, although the vehicle must be at cruising speed for this to occur. If the third attempt to clear the valve is unsuccessful, the code P1404 will set."

I pulled the EGR off and this is what I see:




Now I assume the pintle is that thing in the middle. It is spring loaded, has some carbon build up on it. And sticks alil to open. Do you think cleaner will take car of that carbon or should I get a new egr valve. Anyone know how much that is as I have a 100 deductible on the warrenty. It probably wont make sense to take it back to the dealer. Any clues.

Thanks,

Ryan

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Old 12-12-2003, 01:57 AM   #2
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The pintle usually sticks in the open position due to carbon. Often cleaning it while working the pintle in and out gets rids of the egr code.

If you have had the car for only 3 days, take it back to where you bought it and scream. you may well get the valve replaced without having to pay the deductible. If not, I would try cleaning it. Good luck.

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Old 12-12-2003, 02:03 AM   #3
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I will only add, DO NOT just chunk the valve in a bucket of solvent! Clean the pintle seat and shaft CAREFULLY with an old toothbrush and some carb/throttle body cleaner. (If you are carefull, you can use Varsol, kerosine, charcoal starter fluid, or even gasoline)

...
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Old 12-12-2003, 11:38 AM   #4
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If it uses the same EGR valve as mine the part was gonna be around a $100 from saturn plus labor. You already know how to do the work so I'd just buy the part from Saturn if the cleaning doesn't suffice. I too have a $100 deductible so I did it myself on my 95 SC2.
BTW welcome to the board.

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Old 12-13-2003, 04:23 PM   #5
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Follow-Up

Been 50 miles since the cleaning and still no light. The cleaner definitly made the pintle easier to move. Appears this will become a 3000 mile ritual since its so quick and easy. Also I think a seafoam cleaning and some fuel injector cleaner is in order. Thanks for the input. I had used car dealers.

-Ryan

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Old 12-13-2003, 07:16 PM   #6
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What state are you in? Many have a smog warranty or "passes state inspection" warranty the used car dealers have to follow.

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Old 12-14-2003, 11:47 AM   #7
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Well I'm in Pittsburgh PA which does have emission testing. Whenever we picked up the car it had a new emission sticker good til 12/04 along with the regular inspection. This was a used car dealer who when we called about the EGR being under warrenty asked if Autozone had the part we needed. I prefer to keep the car out of anyones hands but my own. Hopefully the cleaning will take care of it. Dealers are a PITA!! Thanks for your help guys.

-Ryan

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Old 12-15-2003, 02:28 PM   #8
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While you are in a cleaning mood I would give the throttle body a good bath those two parts seem to be what need regular cleaning that is often overlook in maintenance

...
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Old 04-08-2005, 02:19 AM   #9
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Default Re: Take a look at my EGR code P1404

My EGR was a sticky one... and I would clean it and every couple thousand miles I would have to clean it again. The little piston would get stuck in the closed position.... I went to a pick and pull and found one that worked so much better and got it for $15. No problems since.
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Cheap way of doing it :P
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