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1st Generation (1995-1999) Specific discussion of the first generation Toyota Avalon

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Old 05-07-2008, 01:12 AM   #1 (permalink)
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Help SES on, code was scanned.

I took my 1997 Avalon xls to autozone and had it scanned and it came up PO443, Guy said it kinda sucks for me cause that could be lots of things to do with the EVAP system and it being an import he really couldn't help much. Any of you know of anything going on with our cars that throw this code? Thanks for any help.
Thanks,
Matt

Last edited by Matt1997; 05-07-2008 at 01:14 AM.
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Old 05-09-2008, 04:08 PM   #2 (permalink)
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Anyone?
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Old 05-11-2008, 04:14 PM   #3 (permalink)
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P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction

All the codes pulled from an OBDII car should have the same meaning behind the number, most of the time anyway.

When did the check engine light come on? A lot of EVAP related codes are because the fuel cap was not tightly screwed on. Check that and if it is, then the code should go away on its on in a day or two

Last edited by aigochamaloh; 05-11-2008 at 04:15 PM.
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Old 05-11-2008, 05:47 PM   #4 (permalink)
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Quote:
Originally Posted by aigochamaloh View Post
P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction

All the codes pulled from an OBDII car should have the same meaning behind the number, most of the time anyway.

When did the check engine light come on? A lot of EVAP related codes are because the fuel cap was not tightly screwed on. Check that and if it is, then the code should go away on its on in a day or two
It's been on for a few months. It has gone off a couple of times for a few days at a time thou. I did try changing the gas cap and it still does it.
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Old 05-11-2008, 06:24 PM   #5 (permalink)
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Quote:
Originally Posted by Matt1997 View Post
It's been on for a few months. It has gone off a couple of times for a few days at a time thou. I did try changing the gas cap and it still does it.
Hmm, well, then the first place to look is the control valve. You can either tell your mechanic that, or do you do all work yourself?
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Old 05-11-2008, 06:40 PM   #6 (permalink)
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Quote:
Originally Posted by aigochamaloh View Post
Hmm, well, then the first place to look is the control valve. You can either tell your mechanic that, or do you do all work yourself?
Both I do the easy stuff and let him do anything that I can screw up. I'm more of a mechanic on LS1 f-body cars
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Old 05-11-2008, 11:05 PM   #7 (permalink)
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EGR Vacuum Modulator Valve
Where's it located, still getting used to where things are on the engine. Is it a pricey fix?
Thanks
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Old 05-12-2008, 02:52 PM   #8 (permalink)
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Where's it located, still getting used to where things are on the engine. Is it a pricey fix?
Thanks
Circled in red. Mind you, yours should be right next to the EGR valve, not against the firewall like mine. Should have 3 vacuum lines up top, 2 on one side, one on the other, and also one big vacuum line on the bottom going to the EGR valve.

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Old 05-12-2008, 11:41 PM   #9 (permalink)
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Not sure where it located on my Avalon. On my Camaro it's under the Intake manifold, requiring it to be removed.


The EGR and it's modulator valve are both quite expensive, so I would have someone give you a positive diagnosis before attempting it. You might end up spending a lot of time and money for nothing.

Sorry
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Old 05-13-2008, 12:25 AM   #10 (permalink)
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Originally Posted by ringo234 View Post
Not sure where it located on my Avalon. On my Camaro it's under the Intake manifold, requiring it to be removed.


The EGR and it's modulator valve are both quite expensive, so I would have someone give you a positive diagnosis before attempting it. You might end up spending a lot of time and money for nothing.

Sorry
Thanks bro I'll get him to check things out and hopefully find the cause. Btw what year camaro do you have? I have a 2001 SS convertible that's my 3rd child lol.
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Old 05-15-2008, 01:47 AM   #11 (permalink)
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Quote:
Originally Posted by aigochamaloh View Post
Circled in red. Mind you, yours should be right next to the EGR valve, not against the firewall like mine. Should have 3 vacuum lines up top, 2 on one side, one on the other, and also one big vacuum line on the bottom going to the EGR valve.

Mmmm... positive displacement supercharger! Very nice!

Must be a bear to change the spark plugs.
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Old 05-15-2008, 06:01 AM   #12 (permalink)
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FYI - continuously overfilling the gas tank (keeping on clicking the dispenser handle past initial full cut-off) can and will lead to probs in the evap sys.
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Old 05-15-2008, 06:05 AM   #13 (permalink)
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Originally Posted by modain View Post
Mmmm... positive displacement supercharger! Very nice!

Must be a bear to change the spark plugs.
YES, very nice! How did you do that? I mean, did the factory install it or was it DIY? If DIY, Was the part purchased O-T-C or did you find it at the breaker yard?

(LOL with fuel approaching $4.00 just for regular - what am I thinking?)
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Old 05-15-2008, 09:08 AM   #14 (permalink)
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89 Iroc
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Old 07-03-2008, 12:14 AM   #15 (permalink)
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Damn I think it's gotta be something with my wife filling it up past the cut off. I know I've done it a few times. So what's the fix on it if it has something to do with fueling the car?
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