Threw timing belt?
#31
07-31-2012 | 01:01 AM
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From: The 'Burbs of Chicago
...As far as vacuum hoses, i found one that has a screw stuck in it to seal it off near the drivers side of the intake manifold, and what i believe to be the other end of it just hanging there coming out of the wire wrap that i believe to be fuel lines(sticker says warning fuel lines).
Has the EGR valve been removed/blocked off? A picture or three sure could help to make sure we're talking about the same thing.
#33
07-31-2012 | 06:33 AM
3rd Gear Member
Joined: May 2012
Posts: 885
Jkeaton, im not sure what connection you mean. I dont have a service manual, and i have no idea where the PCM is...
The connector I'm talking about is the other wire attached to the opti. The coil wire (which you found) comes out the drivers side, the PCM connector comes out the passenger side top of the opti and runs along the top left (passenger) side of the intake manifold. If you follow it to about halfway along the engine, the connector is right on the side of the manifold here: http://shbox.com/1/evap_sol.jpg
If you keep following the wire bundle, it goes right to the PCM, which is on the back left of the engine compartment.
Go here and click #1, then click C1, that is the PCM. http://shbox.com/1/component_location_views.html
This is a great site and you can learn a lot there.
As far as the wiring around the engine, it looks pretty much like a bowl of spaghetti to me. Theres wires everywhere and i couldnt tell you what more than maybe five of them do. The only opti related wire i (possibly) found was a little short spark plug wire that went to what i believe to be the ignition coil. I pulled it off the coil and reseated it, along with all the stuff i had to unplug to get my intake off (maf sensor, some long hose that sticks in the side of the intake, and some little plug for something on the plenum. As far as vacuum hoses, i found one that has a screw stuck in it to seal it off near the drivers side of the intake manifold, and what i believe to be the other end of it just hanging there coming out of the wire wrap that i believe to be fuel lines(sticker says warning fuel lines).
This, I believe is part of the evap system, look here: http://shbox.com/1/1995_evap.jpg
#2 is the line coming out of the fuel line bundle, and it should be hooked to the other line. I would fix that.
I know i sound like a complete idiot, but i really have no clue whats going on under there. The engine compartment of this car reminds me of that old saying "shoving 10 pounds of crap in a 5 pound sack..." Couple that with the short temper and lack of attention span brought on by 110 degree weather, and im about to push this mother effer off my cliff and into the lake...
Get yourself to a library or somewhere where you can use a computer to get on the internet and go to this site and poke around: http://shbox.com/1/4th_gen_tech1.html
To answer another question, as far as i know, the opti hasnt gotten wet. Ive never sprayed anything under the hood. Anything ive ever cleaned under there has been just by wiping it down. The last time it was washed was like a week before it broke down, and i just used my hose at home. It ran fine after that.
The connector I'm talking about is the other wire attached to the opti. The coil wire (which you found) comes out the drivers side, the PCM connector comes out the passenger side top of the opti and runs along the top left (passenger) side of the intake manifold. If you follow it to about halfway along the engine, the connector is right on the side of the manifold here: http://shbox.com/1/evap_sol.jpg
If you keep following the wire bundle, it goes right to the PCM, which is on the back left of the engine compartment.
Go here and click #1, then click C1, that is the PCM. http://shbox.com/1/component_location_views.html
This is a great site and you can learn a lot there.
As far as the wiring around the engine, it looks pretty much like a bowl of spaghetti to me. Theres wires everywhere and i couldnt tell you what more than maybe five of them do. The only opti related wire i (possibly) found was a little short spark plug wire that went to what i believe to be the ignition coil. I pulled it off the coil and reseated it, along with all the stuff i had to unplug to get my intake off (maf sensor, some long hose that sticks in the side of the intake, and some little plug for something on the plenum. As far as vacuum hoses, i found one that has a screw stuck in it to seal it off near the drivers side of the intake manifold, and what i believe to be the other end of it just hanging there coming out of the wire wrap that i believe to be fuel lines(sticker says warning fuel lines).
This, I believe is part of the evap system, look here: http://shbox.com/1/1995_evap.jpg
#2 is the line coming out of the fuel line bundle, and it should be hooked to the other line. I would fix that.
I know i sound like a complete idiot, but i really have no clue whats going on under there. The engine compartment of this car reminds me of that old saying "shoving 10 pounds of crap in a 5 pound sack..." Couple that with the short temper and lack of attention span brought on by 110 degree weather, and im about to push this mother effer off my cliff and into the lake...
Get yourself to a library or somewhere where you can use a computer to get on the internet and go to this site and poke around: http://shbox.com/1/4th_gen_tech1.html
To answer another question, as far as i know, the opti hasnt gotten wet. Ive never sprayed anything under the hood. Anything ive ever cleaned under there has been just by wiping it down. The last time it was washed was like a week before it broke down, and i just used my hose at home. It ran fine after that.
Last edited by jkeaton; 07-31-2012 at 08:07 AM.
#34
07-31-2012 | 06:40 AM
There is a Photobucket app for smart phones.
#35
07-31-2012 | 09:57 AM
4th Gear Member
Joined: Nov 2008
Posts: 2,614
From: under the hood
I went through qty 3 "GM" Optisparks to find a good one the last time one went out on me.
Never assume a part is good. You describe an opti failure, troubleshoot that.
The next time one goes on me I'll roll the dice and get a Chinese one from Chandler or other resellers who carry them.
And to the OP-------calm down and catch your breath
you remove the belt
you remove the pulley
you drain the coolant
you buy 2 gallons of WalMart coolant at $9 each and mix it yourself
you get a new waterpump gasket
remove the waterpump
remove opti
reverse process
it's not a big deal, you can do it. Label the plug wires before disconnecting from the opti and it will make you even more confident
and invest in a factory or haynes manual for crying out loud
smartphones are nice but nothing beats having the manual and picture/diagram right in front of you and if it gets greasy or is dropped...........so what
I have a shop and haynes manual for every single vehicle I own and that includes new vehicles.
Never assume a part is good. You describe an opti failure, troubleshoot that.
The next time one goes on me I'll roll the dice and get a Chinese one from Chandler or other resellers who carry them.
And to the OP-------calm down and catch your breath
you remove the belt
you remove the pulley
you drain the coolant
you buy 2 gallons of WalMart coolant at $9 each and mix it yourself
you get a new waterpump gasket
remove the waterpump
remove opti
reverse process
it's not a big deal, you can do it. Label the plug wires before disconnecting from the opti and it will make you even more confident
and invest in a factory or haynes manual for crying out loud
smartphones are nice but nothing beats having the manual and picture/diagram right in front of you and if it gets greasy or is dropped...........so what
I have a shop and haynes manual for every single vehicle I own and that includes new vehicles.
#36
07-31-2012 | 11:37 AM
Thread Starter
|
1st Gear Member
Joined: Jul 2012
Posts: 191
From: Grove, OK
Ok, im gonna give this photo thing a try.
Image 1 is the broke off line thats coming out of the fuel line bundle.
Image 2 is the screw in the line coming ot of the side of the manifold between the two front injectors and the two rear injectors.
Image 3 is a piece of vacuum line that i found just shoved between som stuff and not actuall hooked to anything.
And last, image 4 is a broke off line coming from under the front of the intake where it goes into the manifold, under the throttle body?
Image 1 is the broke off line thats coming out of the fuel line bundle.
Image 2 is the screw in the line coming ot of the side of the manifold between the two front injectors and the two rear injectors.
Image 3 is a piece of vacuum line that i found just shoved between som stuff and not actuall hooked to anything.
And last, image 4 is a broke off line coming from under the front of the intake where it goes into the manifold, under the throttle body?
#37
07-31-2012 | 11:39 AM
Thread Starter
|
1st Gear Member
Joined: Jul 2012
Posts: 191
From: Grove, OK
By my own deduction, i would say that the broken piece of hose i found would attach to the part in pic 4 and would reach the fitting in pic 2. If thats the case then i still dont know what pic 1 is for.
#38
07-31-2012 | 11:50 AM
Official GM Representitive
Joined: Jun 2010
Posts: 179
I'm still looking for one myself. I took it to a shop last weekend to have some AC work done and I was telling the owner about this b@stard OBD system on these 94's and he was like, "nope, it's either OBDI or OBDII , there is nothing else"...so I asked him if he could get the codes for me then, he went out to the car, fiddled around for a little while, came back and said there was something wrong with his reader because it could not get anything. So I said, how about jumping the pins and reading the code from the flashing CEL to which he replied, "no one does that anymore"....needless to say, he could not get the codes for me. I know it has some stored because the CEL will come on every now and then, but the next time I start it, it stays off.
I'm sorry to hear about the issues you are having with your check engine light coming on. I would recommend taking your vehicle to a GM dealership for diagnosis. If you'd like my assistance in locating a dealership please let me know and I'll be happy to assist!
Ashley (assisting Brandon)
Chevrolet Customer Service
#39
07-31-2012 | 12:03 PM
Senior Moderator
January 2010 ROTM Winner
January 2010 ROTM Winner
Joined: Oct 2007
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From: The 'Burbs of Chicago
What you have disconnected is the EGR solenoid vacuum line (the hard line in your hand), which is at the rear drivers side corner of the intake, and your vented optispark vacuum hose.
#40
07-31-2012 | 12:32 PM
Thread Starter
|
1st Gear Member
Joined: Jul 2012
Posts: 191
From: Grove, OK
So the line coming up from under the intake is the vent for the opti? I thought the 94 didnt have a vented opti? Its posdible that my car no longer has the egr hooked up due to having the headers intalled right?