EGR
 

Is there any other EGR valve that will fit the SVX? The screws in the SVX Egr unit , what screw to it? I have one with 4 broken screws( can not get them out.) if I drill them out and re tap them what screw into it ( looks like 4 ports with screw holes around them ). I can drill them out bigger and retap them SAE 5/16x18 if that will work.

Re: EGR
 

Ummm, Wut?

Re: EGR
 

Ok does any other EGR assembly from any other car or model Subaru fit the SVX? I purchase an EGR assembly and 4screws-are broken in it. How do I remove the screws. I tried an easy out , I soaked it in blaster I drilled them out. Can i re tap them ? What is it attached too? What part of this statement do you not understand DUH!!!

Re: EGR
 

Usually, proper English, grammar and sentence structure are in place to get complete thoughts and ideas across to other people. Typing random thoughts without any punctuation or random punctuation makes it extremely difficult for anyone to understand your full inquiry. Hence my response.

You first asked if any other vehicle's EGR will work but after that went into a bunch of gobbledygook.

Yes, you can drill them out and retap it with any thread you like. Use whatever bolts you want that work.
I don't believe any other Subaru EGR valve will work, though I haven't looked into it much.

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So something screws into this? All I have is the unit sitting on my work bench. I have no knowledge of how it attaches to the motor or what? I was trying to explain what screws are broken. They are the 4 screws on either side of the ports. I didnt know if they were threaded or not. The holes are filled with rusted steel. THANKS

Re: EGR
 

The valve assembly bolts to the tubes on either end. One side comes from the exh manifold and the other side attaches to the intake manifold. Those tubes have a flange on the end that the bolt goes through and threads into the valve assembly. (Stock is a 10mm bolt IIRC, possibly 8mm)

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This what I have. I have a CEL on ,and the code reads EGR problem. Car is a 1994. Converted to 5 speed. Hoping someday to clear this code.
This is the part with broken screws. [IMG]http://i18.photobucket.com/albums/b1...2F95ED34F6.jpg[/IMG]

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Get a 92 Federal ECU....;)

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Where do I get such a thing? Can I add my 1.5 v chip to it? Also , is that the only cure?

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You can buy one from someone parting out a 92. The chip ought to work fine.

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Yep, Ecutune software is based off 92 coding.

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Um... I have a 92.. With a 92 ECU.. With a 1.5 Chip... and I still get EGR code 34 and 56.
I also have a spare ECU, and that also gives me the same codes...
So... any other suggestions?
Is it because my car is originally from Cali??

I seriously just want to remove the entire EGR assembly, block the damn thing off, and have a resistor put in line that matches the "all ok" signal to the ECU.
Is something like this possible?

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Yes, it's because you have a Cali car. Those do throw codes for both the solenoid and temp sensor.

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Looking4SVX is running an automatic. When it was new it had no CEL ,why does it now? I have one more emmision test to pass. My repair / emmision test garage says it will pass.After that test, can I do what Looking4SVX is suggesting?
Anyone have a picture of the EGR on the motor?

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Surely, this can't be a serious question...:bash:

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My CEL was on for both EGR codes last time I had to go to emissions.
I found a garage with only a 2 wheel dyno so they would have to do the idle test only, I reset the ECU in the parking lot of test garage, and they ran the car. I passed.

So, my conclusion is that this part is meant to just waste space under my hood and make light on my dash come on. I just want the whole damn thing removed I think.

My CEL is still on for EGR.. My emissions was due in march. Just got my letter saying I cannot renew without passing emissions.. I should go do that someday.

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If we do nothing to our card ( yes serious question ) now it has a CEL
This light is on because something is wrong why can't I just fix it with out resorting to changing my ECU? The 5 speed is not causing it I have a 94

Re: EGR
 

It's a 20 year old car. Things fail and break. If you truly want it fixed, you'll want to get a new (not used, go bend over at the subaru parts counter) EGR valve/solenoid assembly. It's a diaphragm that over time wears out and fails. This isn't rocket science...

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Not rocket science, but how can we tell the ecu that its all good in the egr system w/out bending over at the dealer, we are SVX ouners and that means we r really smart, correct? Lets find a way!! Will be watching and waiting and wondering and experimenting? Good day all.........G

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THANK YOU ! I have friends with cars 25 years older than these that have fixed problems worse than this. The car can pass emissions with the dreaded CEL.
All I want is it to go off .

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you can try cleaning the carbon out, but as I said, exhaust heat and gases for 20 years take their toll on the diaphragm. There is no "putting a resistor in" to fool the ECU.

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There are tons of ways to do that. One of those ways is to switch to a 92 ECU. One way is to have a working solenoid plugged in and blocked off, so it can't ever get dirty/stuck again, and block off all the rest of the EGR. I have already explained to ConnSVX several times how to get it actually fixed.

I am not sure whether putting in a resistor would work, since I'm not sure how exactly the ECU gets information about whether the solenoid is working.

Here's what I would do if my 97 were having this problem:

Nothing. Because in FL we don't do emissions testing and I don't mind having the CEL on.

If I did have to worry about testing, I'd try cleaning out the solenoid with probably some seafoam or pb blaster. Then if that didn't work I'd try swapping the solenoid with one from my parts. And if that didn't work I'd buy a new solenoid and replace it. Because sometimes that's what you have to do.

Re: EGR
 

Could you explain to me how the EGR sensors tells the ECU something is wrong?
I figured it was a matter of ohms on the line, like most other sensors.
So I was thinking just replace the line from the sensor with a hot wire of how ever many ohms is the normal reading.

There is no sarcasm in that question. I honestly want to know why it is not possible.

Re: EGR
 

It might very well be possible, if you could figure out the right resistance. But I, for one, wouldn't want to be the one to try it first. Definitely not to fix something as useless as the EGR.

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Next question...

How do I know that an ECU is a 92 ECU?

I have 3 ECU here. 1 came in the car a 92, cali car, gives me code 56 (cali ecu).
I have one from a white 92, I don't know what state it originated, but it has a 1.5ecu chip in it, and I still get the EGR codes.
I have a misc one that came with a TCU I got from a pile of parts from a guy stripping a couple svx.. he didn't know which it came from.

Is there some way to tell by the numbers on it?

Its not big deal to me, the CEL being on doesn't bother me as long as it aint flashing.
I just clear the codes then do an idle test, I don't have that OBD-II to worry about "not ready" whatever crap. :P
But since I got 3 ecu here.. and a 1.5 chip.. and im still getting codes for EGR.. I would swap it if it would fix it.. But I tried 2 and both give the CEL.
For all i know all ECU that came with the car, and came out of the white one, could all be replacments and not actual 92 ecu..
But I do have a 1.5 ecu chip installed.. and your saying that should override the EGR codes, and it doesn't in my 92.

Re: EGR
 

ecu tune does not "override" any codes that I am aware of, the ecutune just changes fuel and timing maps.
I would suspect if you get the numbers off the ecu, I think its a white sticker that will tell you what year and where it was specified to be sold, ie if its a cali car or a federal, meaning all other states.

One thing to note, I have read several accounts of people that have changed ecu, the intake wiring has to match the 92 ecu I guess because the 92 does not have the temp sensor wiring.

Re: EGR
 

Not sure how to tell the difference, sorry. Maybe nate knows.

But it's more likely that they're 92 ECUs, just because there are more 92s, and the 92s are older, and therefore more likely to be parted. When you tried the other ECU, did you get both code 34 and 56 or just 34?

Re: EGR
 

You've got that backwards, a 92 ECU can go into a 92 Cali/94+federal car without a problem. It will never look for the temp sensor. If you put a 92 cali or 94+federal ECU into a Federal 92 car, it will throw a code because there is no EGR temp sensor or wiring. IIRC, the 92 Cali/94+Fed ECU's only need to see the temp sensor is plugged in and existent. It doesn't actually readily monitor the temps. (This may be different for OBD2 versions)

I'll have to take a look at some of my ECU's. I'm sure it can be figured out easy enough. The 92 Fed eliminates the EGR temp sensor check, but still retains the general EGR system code #56. I believe the only way for this to be thrown is a stuck/failed solenoid. There really isn't any clear info. YT would know the most on this subject I believe, possibly OT as they have more hands on experience of this nature. It is not something that LAN or any others who have looked at the programming/software side of things would know.

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Now that you ask me that, I'm not sure if it was both or just 1.
I know the CEL came on, so I said screw it and put the ecu with the 1.5 chip back in. ;)

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Ahhhhh ok i knew it was one of those

Re: EGR
 

The EGR solenoid is operated by a duty cycle signal. The ECU will detect an open or shorted wiring, and a armature that is not responding to the ECUs signal (stuck or jammed.).

The EGR temp sensor is mounted on the passage that carries the exhaust gas from the exhaust manifold to the inlet manifold. When the ECU signals that the EGR opens, it looks for the rise in temp at that sensor, that confirms that gas is passing to the inlet.
The problem is when the passages in the EGR pipe, and the inlet manifold passages, get blocked with carbon, no gas passes, no rise in temp, gives a code.
So to fix the 56 problem, fit a new solenoid. To fix the 34 problem, clean all the inlet manifold passages of carbon.

Harvey.

Re: EGR
 

Bump.

I am getting my car inspected this week. I don't need emissions testing, though. Will I still pass even though I'm throwing a CEL for the EGR? The CEL will not come on unless the engine is warm. It's a '92. The last time I got it inspected, it passed, but I'm 2 hours away from that garage... If it won't, to my knowledge the 92's only throw a code for a dirty sensor, not the temp. sensor (correct me if I'm wrong), so I was wondering what the easiest way to clean it would be. I have a can of seafoam in my trunk, ready for business.

Re: EGR
 

There are two 1/8" ID vac lines on top of the throttle bodies - the one on the driver's side goes through the EGR solenoid. If you disconnect the hose from the nipple (and cover the nipple with something) and put it in the seafoam can, then run the engine, I think it would flow through the solenoid. Or it might only flow through when the solenoid opens and I'm not sure when it does so. Give it a try and see if it pulls anything out of the can. Actually better to try it with only a little bit of fluid first, in case more goes through than expected, don't want to flood the engine or anything. If it doesn't pull any fluid through, post back up and I'll figure out a way to make the solenoid open (the circuit is pretty simple).

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I'll probably just fill a shot glass with the seafoam in order to not overfill it. Do you have a picture of exactly which hose that is? And are you saying that if the solenoid doesn't open it won't create any vacuum pressure at all? I've had people tell me that they did this procedure and it cleaned all that carbon buildup that's throwing that damn code.

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I don't know if there will be enough vacuum without the solenoid, gotta try it and find out. I don't have a picture, but there are only 2 of the small vac lines on top of the throttle body (have to remove the engine cover to get to them of course), and it's the one on the driver's side. Should be easy enough to find.

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http://i532.photobucket.com/albums/e.../DSC_0008b.png

Is this the right one?

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yep. ..........

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Remove the hose from the nipple . You say cover it with something? The something like a hose or a plug. Put it in the can? Do you mean the hose you took off or the thing you put over the nipple
.?

Re: EGR
 

Cover it meaning the nipple, so there's no vac leak. You put the hose in the can. I'm going to try this later on my car to make sure it's safe before I recommend you try it.

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Thanks. I am Willing to try it. May clear my code.