EGR valve on 16V motors -- diagnosis questions? - Off-Road Forums & Discussion Groups
Suzuki GEO All Discussion of all things, Suzuki and GEO

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 11-30-2003, 09:23 PM Thread Starter
 
Join Date: Dec 2001
Posts: 133
Thanks: 0
Thanked 0 Times in 0 Posts
 
EGR valve on 16V motors -- diagnosis questions?

The "check engine light" keeps illuminating on my '96 Tracker. I checked and the motor is still there ... but the code indicates an "error" with the EGR system. I'd like to remove and clean the EGR valve but it's mounted at the rear of the motor next to the firewall. I think I can get wrenches on it and the EGR pipe. A new valve is $200-something !!!

Anyone with experience removing, cleaning or replacing the valve? I've already checked -- the diaphram moves when it's cold. I haven't checked it while it's hot because it get's a little too warm -- it appears to move if I use a long screwdriver as a probe, though. There's one vaccum hose attached to the valve that appears to be intact.

The light comes on when it's colder out (50ish or less) and seems to come on more frequently when it's moist out. I reset the light and everything is fine, then, usually when I let off the gas while travelling, it relights. Any ideas? It codes the same all the time. Last winter, I left it on the whole time and come spring, reset it and it stayed off until the cold weather.

Thanks for any suggestions, advice, pointers .....
panewstoo is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 11-30-2003, 10:39 PM
Keyboard Implanted
 
ackerdackerly's Avatar
 
Join Date: Feb 2001
Location: Kansas City, MO
Posts: 2,075
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: EGR valve on 16V motors -- diagnosis questions?

You may need to use a 10mm socket with a u-joint to get at it. You can also unbolt the fuse box mounted on the passenger strut tower to make some more room.

If it was like my retired 1.3 head and EGR valve, you will discover that carbon has built up in the passage in the head to the EGR valve along with the EGR valve itself. Sort like the carbon version of hardening of the arteries...

Careful cleaning of the unmounted EGR valve (using only solvernts! -- no pokey things!) will help. Careful cleaning of the passage (which starts on the other side of the head where it connects to the exhaust manifold) will also improve things, but requires major disassembly or patience, solvents and some pipe cleaners to be done right.

Hope this helps!
ackerdackerly is offline  
post #3 of (permalink) Old 12-01-2003, 05:53 AM
Veteran
 
TomKat's Avatar
 
Join Date: Mar 2003
Location: York,SC
Posts: 1,226
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: EGR valve on 16V motors -- diagnosis questions?

Be sure your fault isn't for an egr POSITION sensor. They were notorious for failing/ sticking.
TomKat is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 12-01-2003, 04:42 PM Thread Starter
 
Join Date: Dec 2001
Posts: 133
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: EGR valve on 16V motors -- diagnosis questions?

Ack & TomKat:

Some very useful information you guys have provided to me. I'm interested in removing the valve and checking for the carbon buildup and cleaning out whatever I can to see if it doesn't help things out.

TomKat: I'm particularly interested in the EGR position sensor. Can you tell me more about this? Where is it? What can be done to check it? Is there a "resistance check" to make sure it's operating correctly?

Thanks to all for reading and, especially, for the helpful insights you've provided !!!
panewstoo is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome