Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too...}

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Postby psguardian » Tue Jun 28, 2011 3:13 pm

95Rodeo4x4 wrote:
johnnyquattlebaum wrote:BTW what's a TB?


I am going to assume he meant Timing Belt :D
Tsk Tsk... When intake system is the topic TB normally means Throttle Body.

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Postby johnnyquattlebaum » Tue Jun 28, 2011 3:25 pm

oh duh!!! well im definitely not messing with that!!
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Postby psguardian » Tue Jun 28, 2011 3:29 pm

It's not so bad, if you clean the mounting surfaces & mark/picture where things go, it's easy.

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Postby FNFAL308 » Tue Jun 28, 2011 4:18 pm

pbrooke wrote:You have officially earned "Sticky Status." 8)


Yea Man, that's pretty cool I think..
Thank you for your vote/suggestion BTW, that was nice of you.. :occasion5:

johnnyquattlebaum wrote:I am no mechanic, but thanks to your pics I will attempt at taking a crack at this operation...BTW what's a TB?


It's a piece of cake Mang, don't be in a big hurry and you'll be just fine..

BTW, TB= Throttle Body.. No need to be skeered, aint nuthin but a thang..

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Postby 94Rodayo4x4 » Tue Jun 28, 2011 10:49 pm

psguardian wrote:
95Rodeo4x4 wrote:
johnnyquattlebaum wrote:BTW what's a TB?


I am going to assume he meant Timing Belt :D
Tsk Tsk... When intake system is the topic TB normally means Throttle Body.

~psguardian


the only reason I said timing belt was because in one of the pictures I saw bare pulley's :bootyshake:

:lol: :lol:
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Postby zoosrcool » Sun Jul 03, 2011 4:12 am

Awesome write-up and great pictures. I was taking the whole manifold off and cleaning the whole thing (it was a complete mess) and because I had a good possibility of an upper manifold leak due to warping/loosening. But, don't wait to do the EGR cleaning (clean the throttle body, EGR tube, EGR valve pintle, and replace the EGR valve gasket when you do that). Power, stability, and gas mileage may all improve. I just finished today, but already after driving for about 90 minutes, the power and stability (my engine stalled a lot before) have really improved.

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby Bucket65 » Mon Sep 12, 2011 1:12 am

Done - thanks FNFAL308. no more CEL...
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby FNFAL308 » Fri Jun 08, 2012 12:12 am

HELLO EVERYONE!!!

I'm sorry for missing these recent posts but I haven't been on here in months..
My "INTENTION" was to add even more info but I started a NEW job in OCT of last year and it's kept me pretty busy..

If my thread has been useful to anyone I'm very pleased and it was my sincere pleasure to post it up here..

All the best, MIKE
AKA FNFAL308

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby flamshmizer » Mon Jun 11, 2012 11:04 pm

Went to look at my 3.2 to see if the EGR needed a bit of cleaning and... It's not there! My mates ute doesn't have one either. It seems the 3.2's didn't come with EGR's in Australia. Does anyone know if this is in fact the case?

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby anthonytrooper2012 » Sun Jun 17, 2012 4:11 pm

just did this took me maybe 45 mins, awesome write up i have had a insufficient egr air flow code for ever but never could get the valve fully clean.

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby dfoland93 » Thu Mar 21, 2013 3:44 am

Did this today! Ran into some problems, like you said the connectors are a PITA!!! Awesome right up, thank you!
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby Yokomo » Sun Jan 26, 2014 10:39 am

Checked mine out and I could barely stick a clothes hanger into the opening inside the engine. I didn't remove the throttle body. I parked my Amigo so the rear of the vehicle was higher than the front. I removed the egr valve and it was heavily soiled as well. Sprayed seafoam into the egr side and let it run downhill. Did this for quite awhile to let it soak. Cleaned the egr and let it soak as well. Did this over 3 hours or so, ran to the store to get a new gasket. Ran the coat hanger in every so often. Then put some small kinks in the hanger to grab more. Making progress. Later on, after more soaking, put a small hook on the end of the hanger to pull the crud out. Going by the feel of it, the whole tube wasn't that plugged up, most of it was just the very end of the tube. It's one of those easy jobs as long as you're in the right frame of mind.

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby kericf » Sun Feb 23, 2014 5:20 pm

I was getting the low flow EGR code. Checked this and my EGR tube was completely clogged. Took a small screwdriver to poke a hole in the crud in the end just so I could get the cleaning brush in the end. Didn't pull the coolant hoses but had enough slack to do the job. Sprayed a lot of deep creep into the tube from the valve and brushed it good. Sucked it out with a shop vac. Hooked everything back up and so far no code. Thanks to this post I didn't waste money on a new EGR valve.

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby pworm14 » Sat May 31, 2014 6:53 pm

Well, my "02 180k mile trooper threw this code a couple of days ago. If you look at the attached pics it's pretty clear why (guess which is before and which is after). So, I pulled the throttle body and EGR and got busy. 40 minutes later the tube was all cleaned and everything was back together and no more code.

In fact, today turned out to be a kind of "Trooper love" day. She got an oil change and new air filter, EGR cleaning, AND a set of Monroe OESpectrum shocks (fronts were OEM and TOAST, backs were Rancho 5000's that I had slapped on there 100k ago and weren't much better than the fronts). Next thing will be a timing belt/WP change since I'm living on borrowed time at 180k on the originals.
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby rcamacho » Sat Oct 11, 2014 10:14 pm

I just completed this procedure today, great article and it was 100% the root cause of EGR flow issue.
The EGR pipe outlet behind the TB was 100% blocked.
Note, complete removal of the TB was not required. I was able to rotate it out of the way after unbolting it without having to disconnect the coolant lines. I agree - removal of the TB coolant lines is a PITA.
Also noted, there was a lot of oil in the intake manifold with no obvious oil coming from the valve cover vent through the TB inlet.
It's obvious I need to perform the Intake manifold gasket replacement as well...

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby 1999Amigo4WD » Tue Jan 06, 2015 8:49 am

Looks like I have a new weekend project. Great write up OP!
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby simm55845 » Mon Mar 14, 2016 11:29 pm

hello isuzoo nation,



thanks for all the pics and info on the subject. everything went well.



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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby Positron » Sun Jun 05, 2016 6:54 pm

This reply is many years later but the standard assumption is that 'TB' = Throttle Body...
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby FettAffen » Tue Nov 29, 2016 10:57 pm

Great write up :)

Just did this, found the tube severely coked upped....... Like cement , instead of tons of aerosol carb spray and harsh words, I used a common steel sink drain snake I shortened and duplicated the auger end with a little bending..... It worked great to punch through the cement..... I was tempted to just cut a piece of the snake and hook to the drill.... but took a breath and realized I aint in no hurry, dont wanna tear something up..... so just used the handle set up that came on the snake and hand cranked it...... run it in, pull it out, clean auger end, do it again.... tube was solid clogged a good 6 inches.... when it was through it made it alot easier to clean... Harbor Freight brass pipe brush kit did the trick..... my driveway is sloped so the front of the vehicle is alot higher then the rear, so alot of carb spray, brushing and keyboard duster co2 out the egr port with EGR removed, less garbage and spray in the intake the better :D .... Here is the snake I used, had a pack of 3 the wife had picked up off QVC I presume many years ago stashed under the kitchen sink brand new in the Chinese box...

Image

Also t-body gasket and egr gasket Fel-Pro got for the cheap off ebay.... Fel-Pro 61517 and 70789
ImageImage

And HF brush kit I used....
Image

All my tools and everything I own is in a storage in Arizona,other side of the states for me right now :)so I am glad I could do alot of what I am doing to her trooper with basic tools, no air compressor, cheap tools off ebay and loan a tool from the zone.... oh and no time constraints ! :mrgreen:

Also I left the throttle body off, plugged it in and all the other stuff I unplugged, turned the key on and used a piece of pvc pipe cut length to push against the seat to hold the throttle peddle down to the floor to open the t-body butterfly open.... good cleaning and scrubbing.... all done and removed pcv pipe and shut the key off........

I did not know if you can manually open the butterfly on fly by wire Isuzu stuff....... I did some work on a Nissan years ago with electronic throttle control and cleaning the t-body I manually opened the butterfly with the car off... well I guess you dont do that, I was doing Nissan overflow work and had one of the Nissan Techs plug the Nissan scanner in and relearn the throttle... so I didnt take the chance with the Trooper.....

Again great write up !! Thanks! :D
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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby Rodeo814 » Sat Apr 29, 2017 11:50 am

Man I really wanted to hear that cleaning the egr pipe made a huge difference. My pipe is clogged up big time. I'm still going to clean all that carbon out tomorrow.

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Re: Cleaned EGR pipe yesterday.... {Update, Cleaned EGR too.

Postby FettAffen » Thu May 04, 2017 10:24 pm

Yep, the wifes Trooper looked just like your Pic...... If you have an air compressor and rubber tip blow gun it will make life easier...... I dont know if it will make your engine run any better, but sure will get rid of the EGR code..... Also get a set of new spark plugs to install after you are all done and put a few miles on her to blow all the debris and carb cleaner that ends up in the intake.... Get out as much of the debris you create, chunks are not good being ingested into the engine,also dont flood the intake with carb spray, I stuffed a rag under the tube to soak up and catch stuff as I was cleaning...... dont wanna bend valves or have carbon crushed on top of the piston causing a knock or permanent damage. and excessive carb spray ingested causing hydro lock bending a rod or breaking rings etc..........
2001 Trooper Anniversary Edition
Polar White Pearl and Leather heated power seats and alot of the factory bells and whistles.
3.5L DOHC and 4L30e 2wd 146,000 miles
1 quart of engine oil burned per tank, no smoke.
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1990 Jeep Cherokee Laredo
8 inch Lift on 35's and other mods
Owned 19 years now 98,000 miles
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Full 98 R/t conversion
544,000 miles I drove her, owned 15 years sold 2015
1995 Jeep Grand Cherokee
Bone stock, 285,000 miles I put on her.
Original 4.0 engine, trans, diffs, no major repairs.
owned 12 years Sold 2012

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