Question about 1994 Cadillac Seville
Vehicle is vibrating and rough running when accelerating from stop.
The EGR valve is usually on the left side, round and is held on with 2 half inch bolts. Either has a vaccum line or a 2 prong plug going to it.
Posted on Apr 18, 2014
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Posted on Jan 02, 2017
use an OBD II reader, $60 at Walmart.
Also try cleaning out your air intake. Carbon buildup can cause rough idle and hesitation. Run two or three cans of throttle cleaner through it, clean out the pathways from the EGR to the intake, put two shots of the LUCAS brand fuel system cleaner in it or SEAFOAM.
If it improves then there you go. If not, you may have other issue, take it to a mechanic or have a gearhead friend take a look.
The OBD will tell ou if theres any engine codes going off caused by something wrong.
use the Carb cleaner/Intake cleaner by removing the the air intake hose to the air box, use one hand to increas the throttle whiile spraying the cleaner through it. Make sure to rev it enough to keep it from stalling, bu tnot too much.
If you start seeing smoke come out your tailpipe, then you have carbon buildup.
If unsure about any of this. I suggest you make friends with a guy or gal that knows about cars, buy em a six pack and ask them what they think about it, eventually they wont be able to stop themself from helping you.
Posted on Jun 17, 2008
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