 EGR - Worth cleaning? |
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 May 27, 2013 - 9:12 AM
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Enthusiast  Joined Mar 29, '11 From Bloomington, IN Currently Offline Reputation: 0 (0%)  |
I'm just looking to do some routine maintenance on the car before I hand it over to my little bro. I'm thinking about taking off the EGR valve and soaking it in carb cleaner, but I'm wondering if it's worth the trouble. It's a '95 7a with about 180k mi on it, and it's never been cleaned before. There's no CEL on though, so I'm not sure if it's even dirty to the point where it would make a difference.
Thoughts? |
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May 28, 2013 - 9:56 AM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
i would just leave it alone. as long at its working dont mess with it.
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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May 28, 2013 - 1:06 PM
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 Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
You can clean out the tube and be ok. I learned don't blow out the modulator with carb cleaner though, I killed mine doing that.
-------------------- 2001 Miata LS 5-speed
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May 29, 2013 - 10:00 AM
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 Enthusiast Joined May 31, '11 From Rochester, NY Currently Offline Reputation: 5 (100%) |
Most of the time the EGR tube gets clogged, as well as the inlet to the intake. Both should be cleaned.
-------------------- 1994 Toyota Celica GT-S 5S-FE 190k Miles. Project car 1992 Toyota Celica GT 5S-FE 170k Miles. Daily driver/beater 1999 Toyota Camry LE 5S-FE 216K Miles. RIP You will be missed.  *ASE Certified General Manager |
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May 29, 2013 - 10:21 AM
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Enthusiast Joined Mar 29, '11 From Bloomington, IN Currently Offline Reputation: 0 (0%) |
I see, good info, thanks. So what's the best thing to clean the tube with? And I won't mess with the modulator, thanks for the heads up.
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May 29, 2013 - 10:38 PM
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 Enthusiast Joined Jun 5, '07 From Santa Maria Currently Offline Reputation: 1 (100%) |
I cleaned mine when the motor was out of the car. I couldn't imagine trying to take it off with the engine in the bay. Not saying it can't be done, just seems like it would be more work than its worth if everything is working fine. Mine was also a 5s, dunno what the 7a looks like...
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May 29, 2013 - 10:44 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
With the 7A it's not too terribly hard to remove.
-------------------- 2001 Miata LS 5-speed
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May 29, 2013 - 11:27 PM
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 Enthusiast Joined May 25, '13 From Charlotte, NC Currently Offline Reputation: 0 (0%) |
Got this from a manual a downloaded a while ago:
"1989-95 ENGINE PERFORMANCE Toyota EGR Function Testing All Models EGR VALVE 1) Disconnect vacuum hose to EGR valve. Using a hand-held vacuum pump, apply vacuum to EGR valve with engine at idle. Engine should run rough or stall. If engine does not run rough or stall, check EGR valve passages for blockage or faulty EGR valve. Clean passages as necessary. If passages are clear, replace EGR valve. 2) Install vacuum gauge to ported vacuum port to EGR. Raise engine RPM. Vacuum should be present. If vacuum is not present, clear vacuum port of blockage." Best to find out whether it needs a cleaning before you even pull it out. But Box is right, easy on the A |
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May 30, 2013 - 12:26 AM
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Enthusiast Joined May 31, '11 From Rochester, NY Currently Offline Reputation: 5 (100%) |
I used
 But be careful. Don't get it on plastic parts or on your shoes. It ate the suede right off my DVS's lol. -------------------- 1994 Toyota Celica GT-S 5S-FE 190k Miles. Project car 1992 Toyota Celica GT 5S-FE 170k Miles. Daily driver/beater 1999 Toyota Camry LE 5S-FE 216K Miles. RIP You will be missed. *ASE Certified General Manager |
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