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Subject:
Re: EGR Valve on L98

From: Joe <Joe(at)yahoo.com>

Subject: Re: EGR Valve on L98

Date: Sat, 08 Sep 2007 19:45:56 -0700

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gjt wrote:

> Thanks guys......

>

>

> "Dad" <knockers(at)fisher.net> wrote in message

> news:hpCdnZUoR-6Cu37bnZ2dnUVZ_r2nnZ2d(at)bright.net...

>> "Bob I" <birelan1(at)yahoo.com> wrote in message

>> news:x2EEi.567$ZU7.7(at)newsfe04.lga...

>>> Dunno about space issues on a `90, but I did the one on our `95 in about

>>> a half hour and that included waiting for the flat black paint to dry,

>>> because the replacement was cadmium plated and the original was flat

>>> black. I believe I gave about $65 for the valve at NAPA, so $70 is about

>>> right. Firestone will charge you dealer retail for the valve, so figure

>>> they will get what, maybe $140 for the valve, plus all the "nickle and

>>> dime" stuff like handy wipes and environmental disposal, and what ever

>>> other charges they can pad the bottom line with. Just make sure you get a

>>> clean gasket surface before you bolt it up.

>>>

>>> gjt wrote:

>>>> `90 L98 Vert. Service Engine Light would come on after about 15 minutes

>>>> of driving. Any time I would turn off the engine, it would reset.

>>>> Comes right back on when it warms up. Took it to local Firestone. They

>>>> said my EGR valve was badly stuck. Said if I continue to drive as is,

>>>> the Cats would eventually load up with Carbon. They want $450!!! I

>>>> think this is a bit excessive. Is there something about an L98 that

>>>> makes this a difficult job? From doing some searches, looks like the

>>>> going rate for the valve is around $70.

>>>>

>>>> Thanks for your input.

>>>> gjt

>> Bob`s right on the money on this exercise ACDelco is the cheapest valve at

>> $60/$65 and they have 2 numbers 2145535 and 2141429 (plastic vacuum

>> fitting). Airtex is $70 and a metal fitting but shows no gasket with it so

>> check before you get back to work and there is none, FEL-PRO gasket part #

>> 70954, and ACDELCO part # 10077547. Wouldn`t be a bad idea to remove the

>> valve to take it with you, but before you do that clean it and the

>> manifold up and see if the diaphragm will hold a vacuum and work the

>> plunger, if so put it back with the new gasket. The $450 repair just

>> became a $2 job.

>>

>> --

>> Dad

>> 05 C6 Silver/Red 6spd Z51

>> 72 Shark Black/Black/4spd

>> 64 Red/red/white top/4spd

>>

>

>



Take a close look. My `89, and I think all

of `85 - `91 had the EGR under the plenum --

not out in the open as in the LT1.



If this is the case, you`ll need a set of

Torx bits and a flare wrench to remove the

plenun and the vacuum lines. It`s tight but

you can get the EGR out without pulling the

runners.



As Bob says, get the little gasket for the

EGR. Shop around and get a partial intake

gasket kit...one with just the gaskets

between the runners and the plenum. New

throttle body gasket is also a good idea.



If the `90 has a MAF, remove it but leave the

throttle body hanging. Disconnect the vacuum

hoses to the plenum and check for an

electrical lead to a MAT sensor on the bottom

of the plenum ...might not be one on the `90.

Gently tap the plenum to break it loose

from the runners and lift it out, vertically

so as to not scratch the mating surfaces or

drop broken gasket material down the runners.



Should be about two hours coming apart, 30

minutes to swap the EGR and clean up the

intake mating surfaces and a couple of hours

putting stuff together again. If the car has

over 80K miles it might be good to clean the

inside of the plenum



Looks like you`re making about $ 85 an hour

and have some "free" tools for the next job.

Six-pack isn`t included in this pricing. (8-O



Suggestion: Not that I don`t trust the

highly qualified Corvette specialists at

Firestone... however, before you leap into

this, dump the codes and make sure you`re

dealing with an EGR issue.



The Haynes C4 manual has some tests that can

be run on the EGR. Making sure there`s

vacuum to the EGR is a good idea-- a vacuum

leak would prevent the valve from working.



HTH

--

pj

`89 auto / `02 6-spd




Next Topic
From: Eugene Blanchard <blanchae(at)telus.net>

Subject: Re: EGR Valve on L98

Lines: 45

Date: Sun, 09 Sep 2007 05:13:20 GMT

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My answer is a little bit off topic but it concerns the egr valve. Don`t

know where you live but if you don`t have yearly smog tests to pass. I

suggest you block off the egr valve.



Now I don`t have a 90s Vette but bear with me. On my 92 Ford Ranger, the

computer controls the EGR valve position using vacuum, then there`s an EGR

position sensor to verify that its working. So disconnecting anything

brings up the Check Engine light and a trouble code.



To get around the computer, I made a metal plate which matched the outline

of the EGR valve gasket and installed it with the gasket. The EGR position

sensor reports that the EGR is working and no error codes!



Why block off the EGR? It recirculates the exhaust gas back into the intake

manifold to reduce NOx emissions. Ideally, you want the coolest air in the

intake, the EGR adds extremely HOT exhaust gas in. And it screws up your

fuel/air mixture - rather than clean outside air, you have hot CO gas

coming back in. The result is less power and poorer gas mileage.



Blocking off my EGR valve increased my overall hp (every little bit counts

on a 2.3l ford) and increased my gas mileage by 20% around town.



http://www.cadvision.com/blanchas/Ranger/egr.html



Comments?



gjt wrote:



> `90 L98 Vert. Service Engine Light would come on after about 15 minutes of

> driving. Any time I would turn off the engine, it would reset. Comes

> right

> back on when it warms up. Took it to local Firestone. They said my EGR

> valve was badly stuck. Said if I continue to drive as is, the Cats would

> eventually load up with Carbon. They want $450!!! I think this is a bit

> excessive. Is there something about an L98 that makes this a difficult

> job? From doing some searches, looks like the going rate for the valve is

> around $70.

>

> Thanks for your input.

> gjt



--

Eugene Blanchard

http://www.cadvision.com/blanchas

Home of the DIY Hot Rod Kustom website






Next Topic
From: "gjt" <gjtooley(at)bellsouth.net>

Subject: Re: EGR Valve on L98

Lines: 95

Date: Sun, 9 Sep 2007 07:15:30 -0500

Bytes: 5571

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Excellent info. Thank you!!!!!!!!!





"Joe" <Joe(at)yahoo.com> wrote in message news:fbvmp6$nij$1(at)aioe.org...

> gjt wrote:

>> Thanks guys......

>>

>>

>> "Dad" <knockers(at)fisher.net> wrote in message

>> news:hpCdnZUoR-6Cu37bnZ2dnUVZ_r2nnZ2d(at)bright.net...

>>> "Bob I" <birelan1(at)yahoo.com> wrote in message

>>> news:x2EEi.567$ZU7.7(at)newsfe04.lga...

>>>> Dunno about space issues on a `90, but I did the one on our `95 in

>>>> about a half hour and that included waiting for the flat black paint to

>>>> dry, because the replacement was cadmium plated and the original was

>>>> flat black. I believe I gave about $65 for the valve at NAPA, so $70 is

>>>> about right. Firestone will charge you dealer retail for the valve, so

>>>> figure they will get what, maybe $140 for the valve, plus all the

>>>> "nickle and dime" stuff like handy wipes and environmental disposal,

>>>> and what ever other charges they can pad the bottom line with. Just

>>>> make sure you get a clean gasket surface before you bolt it up.

>>>>

>>>> gjt wrote:

>>>>> `90 L98 Vert. Service Engine Light would come on after about 15

>>>>> minutes of driving. Any time I would turn off the engine, it would

>>>>> reset. Comes right back on when it warms up. Took it to local

>>>>> Firestone. They said my EGR valve was badly stuck. Said if I continue

>>>>> to drive as is, the Cats would eventually load up with Carbon. They

>>>>> want $450!!! I think this is a bit excessive. Is there something

>>>>> about an L98 that makes this a difficult job? From doing some

>>>>> searches, looks like the going rate for the valve is around $70.

>>>>>

>>>>> Thanks for your input.

>>>>> gjt

>>> Bob`s right on the money on this exercise ACDelco is the cheapest valve

>>> at $60/$65 and they have 2 numbers 2145535 and 2141429 (plastic vacuum

>>> fitting). Airtex is $70 and a metal fitting but shows no gasket with it

>>> so check before you get back to work and there is none, FEL-PRO gasket

>>> part # 70954, and ACDELCO part # 10077547. Wouldn`t be a bad idea to

>>> remove the valve to take it with you, but before you do that clean it

>>> and the manifold up and see if the diaphragm will hold a vacuum and work

>>> the plunger, if so put it back with the new gasket. The $450 repair just

>>> became a $2 job.

>>>

>>> --

>>> Dad

>>> 05 C6 Silver/Red 6spd Z51

>>> 72 Shark Black/Black/4spd

>>> 64 Red/red/white top/4spd

>>>

>>

>>

>

> Take a close look. My `89, and I think all of `85 - `91 had the EGR under

> the plenum --

> not out in the open as in the LT1.

>

> If this is the case, you`ll need a set of Torx bits and a flare wrench to

> remove the plenun and the vacuum lines. It`s tight but you can get the

> EGR out without pulling the runners.

>

> As Bob says, get the little gasket for the EGR. Shop around and get a

> partial intake gasket kit...one with just the gaskets between the runners

> and the plenum. New throttle body gasket is also a good idea.

>

> If the `90 has a MAF, remove it but leave the throttle body hanging.

> Disconnect the vacuum hoses to the plenum and check for an electrical lead

> to a MAT sensor on the bottom of the plenum ...might not be one on the

> `90. Gently tap the plenum to break it loose from the runners and lift it

> out, vertically so as to not scratch the mating surfaces or drop broken

> gasket material down the runners.

>

> Should be about two hours coming apart, 30 minutes to swap the EGR and

> clean up the intake mating surfaces and a couple of hours putting stuff

> together again. If the car has over 80K miles it might be good to clean

> the inside of the plenum

>

> Looks like you`re making about $ 85 an hour and have some "free" tools for

> the next job.

> Six-pack isn`t included in this pricing. (8-O

>

> Suggestion: Not that I don`t trust the highly qualified Corvette

> specialists at Firestone... however, before you leap into this, dump the

> codes and make sure you`re dealing with an EGR issue.

>

> The Haynes C4 manual has some tests that can be run on the EGR. Making

> sure there`s vacuum to the EGR is a good idea-- a vacuum leak would

> prevent the valve from working.

>

> HTH

> --

> pj

> `89 auto / `02 6-spd












Last "Cars" Post on Wordpress:


Title: I am not a fan of BMW month
Date: Thu, 24 Sep 2009 14:40:06 +0000
Author: whoisfelix

I pretty much visit the Speedhunters website daily for my car fix. I actually need quite a few of those thoughout any given day. Every month lately, they’ve been sticking to a theme. I was fully on board for speed month, as they covered salt flat racing, wangan cars, and did some pretty awesome retrospective coverage of the old Avus and Autobahn circuits. This month, they are doing BMW month. I don’t hate BMW’s. In fact, I like them quite a lot. BMW’s don’t vary that much and I feel like I’ve seen it all. I guess I’m just waiting for the October theme to be announced so I can get back on board. Not hating, just waiting…

Here’s a couple of shots that I actually REALLY liked from last month. Some just look cool, others show another side of speed. I had no idea that Top Secret built a pikes peak car. I am late to the Pentroof party. At any rate, here are my favorites for Speed Month in August on Speedhunters;

smokeypikespeak

Ludvigsen

ford tr 20090730 9526

lambosatpa

lsr 01


More on: http://whoisfelix.com/2009/09/24/i-am-not-a-fan-of-bmw-month/



____________________________________________

Title: Model A's come to the Lakes Region of NH
Date: Thu, 24 Sep 2009 17:42:49 +0000
Author: Doug

Beginning September 24th approximately 225 Model A’s will come to the Lakes Region for a gathering and road trip.  On Saturday the 26th they will tour around Lake Winnipesaukee.  Many of these cars and their owners are staying in local lodging properties like the Margate and the Landmark Inn.

Here is a preview of the event as some of the cars have begun arriving in the Lakes Region earlier this week.


More on: http://lakesregionchamber.wordpress.com/2009/09/24/model-as-come-to-the-lakes-region-of-nh/