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#1
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EGR question (1991 350SD)
Do I really need it? If not, how can it be disconnected (i.e. can I just pull the line from the vacuum pump, thus disabling any vacuum to the EGR). Then remove the solenoids and replace the EGR with an aluminum plate.
If I do need it, how do I make sure it works well (at what vacuum should it open? Should it be cleaned? Should the solenoids be tested? etc.) Thank you, Vlad |
#2
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It reduces NOx emissions. I think the computer can tell when it isn't working, and will set a fault code... but it doesn't affect driving at all.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#3
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In my 1991 350SDL I removed the valve and installed a copper disc on the exhaust side. I capped the vaccum line. This is for "testing purposes" only. I am conducting a very long test.
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#4
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I'm conducting my own very long test. Disconnected the EGR @ vacuum pump (removed the 'Y'). No check engine light, the car still runs just as well (or better) then before ... this might turn into a very long test.
The way I see it, any simplification to a 20 year old engine is progress. Removal of vacuum lines, EGR solenoid, EGR valve, etc. makes for fewer places for something to fail, and cleans up the engine bay. |
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