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1994 Concourse
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7 Posts
Re: 95 sts acceleration problem

For a while now my car has been hesitating, just not accelerating smoothly and running rough in the 55-65 mph range. Cleaned out the EGR and she runs much better. One of the easiest fixes I've ever done on this car. The images sure helped.
 

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1994 Cadillac Deville Concours
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22 Posts
Re: How To Clean The EGR Valve

Such great info here. I've done the RPM/ Coolant Temp/Volts mod on my 94 Concours as well as cleaning the Throttle Body. Today we were out running errands and the car started running very rough. The cat was also getting hot. Stopped by the parts store and picked up an EGR Valve gasket and a can of Brake Cleaner. Pulled off the EGR, cleaned it and re-installed. Car is running smoother and has better throttle response than it ever had.
A big "Thanks" to this forum and the people that contribute to it.
A new EGR was $177-275 depending on the manufacturer. $7.49 for a can of cleaner and gasket worked out much better for my budget this week.
 

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1995 Cadillac Seville SLS
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87 Posts
i cut that metal bracket for ss lines off with a dremel and replaced the wierd bolts with real bolts into the egr mount.
 

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2009 DTS-L
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57 Posts
Re: How To Clean The EGR Valve

Pictures are great but is the cleaner being sprayed into the openings???? just want to be sure . dont want to do anything stupid that 'll lead
more $$$$.

thanks.
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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71,053 Posts
Re: How To Clean The EGR Valve

EDIT: Referenced original Post 66 deleted. See new post 68.


Post #66 is incorrect information. That valve is not the EGR - it is A.I.R. check valve #1, part of the blower/piping/valve system that supplies fresh air to the exhaust manifolds for a period of time at startup in order to quickly light off the catalytic converter. (A.I.R. valve #2 is next to the lower radiator hose and the blower is inside the LF fenderwell plastic liner, in front of the drive axle on the frame mounting.)

In the Engine in #66 the EGR is electrical and is located on the right (rear) side of the water crossover casting.

See Post #3 and ............

Here's the 2000 - 2005 EGR location. #6. You remove it and clean the pintle and gas port.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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2010 DTS
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87,557 Posts
Re: How To Clean The EGR Valve

Post #66 deleted so as not to create any future confusion since this thread is about EGR valves.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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71,053 Posts
Re: How To Clean The EGR Valve

Why not undelete it and move it to its own thread (AIR check valve cleaning: 2000 - 2005 Northstar) in Tech Tips ?

It was nicely done with good pictures.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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71,053 Posts
Re: How To Clean The EGR Valve

If it's OK with you I'll mess with it later today. (Honey do............ currently in progress ..............)

.............. Post cleaned up and moved to Tech Tips. (the Honey do !!!! is too loud to ignore ............... outta here.

2001 Seville A.I.R. valve cleaning
 

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4 Posts
Re: How To Clean The EGR Valve

Great Tip! The same process works on '96 and newer obd-II cars, you just have to move the fuel lines out of the way to get the EGR out. And the code on my '96 SLS was P1406. Thanks for the tips! Oh, its also a good idea to clean the carbon deposit out of the EGR supply and outlet tubes on the engine.
I can't move the fuel rail due to the hold down tab is over the nut. A bracket that is part of the throttle cable assembly that surrounds 75% of the 2 stainless lines, so I can't move it sideways or backwards. Anyone have a hack to get around it?

Dr X
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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71,053 Posts
What make, model, year car ?

Welcome to CF !!!
 

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4 Posts
What make, model, year car ?

Welcome to CF !!!

Well, I have a 1988 Fiero with a 1995 Northstar engine with 17k miles on it when dropped in, sat in storage the past few years, no past info on did the swap. I read this thread and hopefully cleaning the EGR takes care of hard starting/running until warm . Since the engine bay is small, its a PITA to get around the fuel rails.
 

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4 Posts
Finally got the EGR valve off. Had to use 10mm crows foot to remove bolt under fuel rail tab, then pry up tab to get out of the way to remove valve. When I reinstalled it, I bent the rail tab up from the down position so I could bolt tab directly to top of EGR valve. Took some prying and had to elongate one hole on valve to get the bolt in, but if it has to come out again it will be much easier.

Valve was not stuck so it didn't solve my cold start problem.

Dr Xtreme
 
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