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Running Vacuum Lines and EGR Solenoid

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Old Jun 18, 2012 | 06:55 PM
  #1  
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Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Running Vacuum Lines and EGR Solenoid

Ok guys here is the problem, I'm running new vacuum lines in my 88 Iroc 350 TPI and everything was going well until I realized that there is no EGR Solenoid and according to the diagram underneath the hood you need that. My question is:

Is the EGR Solenoid absolutely needed to run the vacuum lines are is there a way around it?

All input will be greatly appreciated, I'm trying to get this issue fixed asap....
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Old Jun 18, 2012 | 07:02 PM
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Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by dredre08
there is no EGR Solenoid and according to the diagram underneath the hood you need that. ...
Only need the EGR solenoid if you have the EGR valve in place and want to operate it.
Do you?
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Old Jun 18, 2012 | 07:17 PM
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Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by vetteoz
Only need the EGR solenoid if you have the EGR valve in place and want to operate it.
Do you?
The EGR is in place and what not but Im not stuck on using it, I just want these vacuum lines to be sealed so my car can stop idling super crazy.....
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Old Jun 19, 2012 | 07:42 PM
  #4  
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Re: Running Vacuum Lines and EGR Solenoid

You can plug it to stop the vacuum leak for now. But the earlier years of the TPI engine, like yours, the EGR system has a temp sensor screwed into it that gives feedback to the ECM that (hot) exhaust gasses are actually flowing through the EGR valve when it is commaded to open by the ECM. In short, it won't take long for the ECM to figure out the EGR system has been defeated and throw a check engine light.
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Old Jul 8, 2012 | 08:38 PM
  #5  
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From: St. Louis, MO
Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by Damon
You can plug it to stop the vacuum leak for now. But the earlier years of the TPI engine, like yours, the EGR system has a temp sensor screwed into it that gives feedback to the ECM that (hot) exhaust gasses are actually flowing through the EGR valve when it is commaded to open by the ECM. In short, it won't take long for the ECM to figure out the EGR system has been defeated and throw a check engine light.
Well in that case I do want to run it with the egr solenoid, I want these vacuum leaks fixed but I want it done right to the point where Im not getting any check engine lights or anything.... Im just really tryna get this car 100 percent ready to make it my daily driver for about 6 months to a year.... so I dont want to take any shortcuts with these vacuum leaks..... Does anyone know where I can get a new egr solenoid I seem to cant find them at auto zone or other similar parts store.....
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Old Jul 9, 2012 | 08:14 AM
  #6  
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From: SW Ontario
Car: 1988 GTA Trans AM
Engine: 305 TPI
Transmission: 5 speed
Re: Running Vacuum Lines and EGR Solenoid

rockauto has them stocked, just ordered one for my 88 GTA, now the temp sensor for the EGR is hard to find, for a resonable price that is.
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Old Jul 10, 2012 | 10:39 AM
  #7  
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From: St. Louis, MO
Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by lakeport
rockauto has them stocked, just ordered one for my 88 GTA, now the temp sensor for the EGR is hard to find, for a resonable price that is.
May I ask how does the temp sensor for the egr play apart, because I am currently having issues with my temp gauge just flickering non stop and not actually giving me a temperture reading, could the vacuum line leak and missing egr solenoid have something to do with that? Or is that problem unrelated.... I actually have a current thread started in the general tech about the temp gauge in hopes of solving that problem as well!.... Any input will be greatly appreciated!!
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Old Jul 10, 2012 | 02:45 PM
  #8  
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From: SW Ontario
Car: 1988 GTA Trans AM
Engine: 305 TPI
Transmission: 5 speed
Re: Running Vacuum Lines and EGR Solenoid

The EGR temp sensor is not for the temp of the motor or the gauge. The EGR temp sensor feeds data back to the ECM for when the EGR should be turned on/off, please correct me if im wrong with that explanation.

on the drives side, by plug 3 and 5, is where the temp sensor for the dash plugs into
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Old Jul 28, 2012 | 03:31 PM
  #9  
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Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Ok correct me if im wrong because Im not exactly savvy with all this mechanic stuff, but I was looking under the hood and I think I might have the egr solenoid in place after all.... I took a picture of what Im thinking is the egr solenoid..... Please anybody correct me if im wrong!... All input greatly appreciated.....
Attached Thumbnails Running Vacuum Lines and EGR Solenoid-solenoid-1.jpg   Running Vacuum Lines and EGR Solenoid-solenoid-2.jpg  
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Old Jul 28, 2012 | 03:56 PM
  #10  
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Running Vacuum Lines and EGR Solenoid

the egr solenoid is there alright but the lines are snapped off
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Old Jul 28, 2012 | 03:59 PM
  #11  
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From: St. Louis, MO
Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by tunedperformanc
the egr solenoid is there alright but the lines are snapped off
Lol, well problem solved!!, Im finna head up to autozone right now and buy some new lines and just re-run all the vacuum lines, I just printed out a diagram from another thread off the site......
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Old Jul 28, 2012 | 04:07 PM
  #12  
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Re: Running Vacuum Lines and EGR Solenoid

tpi parts.net has the preformed lines.

http://www.ebay.com/itm/89-92-TPI-Ca...ff4251&vxp=mtr
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Old Jul 28, 2012 | 04:21 PM
  #13  
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From: St. Louis, MO
Car: 1986 Trans Am/1988 Camaro Iroc-Z
Engine: 305 TPI/350 TPI
Transmission: 700r4
Re: Running Vacuum Lines and EGR Solenoid

Originally Posted by tunedperformanc
tpi parts.net has the preformed lines.

http://www.ebay.com/itm/89-92-TPI-Ca...ff4251&vxp=mtr
Thanks!!! about to order now.........
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Old Aug 9, 2012 | 05:58 PM
  #14  
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Car: 1988 Camaro Iroc-Z
Engine: 305
Transmission: T-5
Axle/Gears: 3.08
Re: Running Vacuum Lines and EGR Solenoid

Same thing happend to me with one of the lines, but I got the impression that the lines are part of the solenoid, are you telling me you can actually disconnect them at some point from the solenoid and order new line set and connect it??
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