EGR Error code

I've got '95 Tercel (w/Auto). Check Engine light came on that EGR wasn't
working (P0401). Autozone doesn't carry that year's EGR vavle, so had to
order from dealership. Replaced the EGR valve, and cleared the code. 2
days later code came right back. Tried clearing it a couple times, keeps
coming back (P0401). What's the trick to really clearing this out ? Other
than the light car is running fine (and getting 35mpg). Thanks.

On Sun, 26 Jun 2005 20:35:25 -0400, Gary Hayek wrote:
[color=blue]
> I've got '95 Tercel (w/Auto). Check Engine light came on that EGR wasn't
> working (P0401). Autozone doesn't carry that year's EGR vavle, so had to
> order from dealership. Replaced the EGR valve, and cleared the code. 2
> days later code came right back. Tried clearing it a couple times, keeps
> coming back (P0401). What's the trick to really clearing this out ? Other
> than the light car is running fine (and getting 35mpg). Thanks.[/color]

Holy Crap!!! You took AutoZone's advice and shelled out for an EGR???!!!!!

P401 is also Low Vacuum!!! I drove my '95 for 3 years with this code, had
the EGR tested at a Toyota dealer and it was fully operational. Also
replaced both O2 sensors (since I got them at cost +10%...). Checked the
vacuum sensor, etc, etc, etc.

Here's what I was experiencing: Sluggish performance and poor gas mileage.

Here's what I did: The ECU is located behind the glove box, with JUST
enough room to squeeze your hand in there. There are two plugs; the upper
one clears the memory. Pull it for ~30 seconds (with the key OFF!!!), plug
it back in and drive for about 3 days with full performance and 45MPG. The
light will come on again.

What I was GOING to do before I sold the car was to find the wire that
provides +12V constant, and wire it into the wire that only comes on with
the key (all the MDT's here, feel free to lambaste me now!!!) This means
the computer will ONLY be powered on when the key is in the ON position,
and you'll NEVER have a check engine light again! You'll also never be
able to read codes again...

Then I got smart before I did that. One by one I removed the Vacuum lines
and sprayed them with I Wish I Could Remember What cleaner, and then
replaced them. I sold the car about 2 weeks after that, but the light
never came on again!

Make sure you use a cleaner that is rubber-hose friendly...

"Gary Hayek" <gjrhayek@optonline.net> wrote in message
news:BEE4C20D.24B5%gjrhayek@optonline.net...[color=blue]
> I've got '95 Tercel (w/Auto). Check Engine light came on that EGR wasn't
> working (P0401). Autozone doesn't carry that year's EGR vavle, so had to
> order from dealership. Replaced the EGR valve, and cleared the code. 2
> days later code came right back. Tried clearing it a couple times, keeps
> coming back (P0401). What's the trick to really clearing this out ?
> Other
> than the light car is running fine (and getting 35mpg). Thanks.
>[/color]
Check for a vacuum leak to the EGR valve, check the EGR position sensor.
--
Ray O
correct the return address punctuation to reply