TPI EGR solenoid question??
Thread Starter
Senior Member
Joined: Mar 2007
Posts: 576
Likes: 0
From: Norway
Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
TPI EGR solenoid question??
Hi there...
I need some help on my 87 305 TPI engine..It is a Chevrolet Camaro...
I need to replace my EGR vacuum solenoid, but that is impossible since that part is no longer available any place.
I was thinking of something like this:
Change wiring connector to EGR wiring connector for Camaro 91-96models.
From this:
To this:

The second connector (blue) is for 87 to 92 camaro TPI systems.
I have the green one like the first picture.
My question is: If i replace the pigtail connector and buy a new solenoid like this:

Will that work on my TPI system?...I can modify that bracket to fit.
But I was just curious if the EGR system will work with this, because personally myself I think it is just basically a simple vacuum switch that get's "ground" signals from the ECM that turns the switch ON and OFF with correct pulses. But that is controlled by the ECM.
Would this work out for me???
I need some help on my 87 305 TPI engine..It is a Chevrolet Camaro...
I need to replace my EGR vacuum solenoid, but that is impossible since that part is no longer available any place.
I was thinking of something like this:
Change wiring connector to EGR wiring connector for Camaro 91-96models.
From this:
To this:

The second connector (blue) is for 87 to 92 camaro TPI systems.
I have the green one like the first picture.
My question is: If i replace the pigtail connector and buy a new solenoid like this:

Will that work on my TPI system?...I can modify that bracket to fit.
But I was just curious if the EGR system will work with this, because personally myself I think it is just basically a simple vacuum switch that get's "ground" signals from the ECM that turns the switch ON and OFF with correct pulses. But that is controlled by the ECM.
Would this work out for me???
Member
Joined: Sep 2004
Posts: 439
Likes: 0
Car: 1986 Camaro Z28
Engine: 305 TPI
Transmission: Who orders an auto in a Camaro??
Axle/Gears: Economy gears..once again, WHY?!?
Re: TPI EGR solenoid question??
Check out tpiparts.net they have wiring pigtails and may have the one you need. I have got alot of stuff through them. Even sent my wiring harness to them to repair a broken wire and replace several bad connectors.
Thread Starter
Senior Member
Joined: Mar 2007
Posts: 576
Likes: 0
From: Norway
Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
Re: TPI EGR solenoid question??
They have the pigtail connector yes...But I think you misunderstood me a little. I need the EGR vacuum switch..EGR solenoid as it is called...And that parts is no longer available any place...So I need to modify something.
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From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: TPI EGR solenoid question??
I know this is 16 months old, but did you ever get any resolution on it?
Joined: Apr 2005
Posts: 7,736
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: TPI EGR solenoid question??
Thread Starter
Senior Member
Joined: Mar 2007
Posts: 576
Likes: 0
From: Norway
Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
Re: TPI EGR solenoid question??
A thread is newer to old if you ask me. I am sorry I didn't write what I went up with. I bought the pigtail connector and a newer solenoid like mentioned on the thread earlier and the EGR system worked OK on my Camaro if I am not wrong. I went with code 32 a couple of times but not every time I took the car for a spin. Now I have rebuilt the engine and done some street performance to the engine so I no longer have EGR and AIR system..
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From: Naples, FL
Car: 1991 Firebird
Engine: 383 stroker
Transmission: T-56
Re: TPI EGR solenoid question??
A thread is newer to old if you ask me. I am sorry I didn't write what I went up with. I bought the pigtail connector and a newer solenoid like mentioned on the thread earlier and the EGR system worked OK on my Camaro if I am not wrong. I went with code 32 a couple of times but not every time I took the car for a spin. Now I have rebuilt the engine and done some street performance to the engine so I no longer have EGR and AIR system..

I'm pretty much looking to do the same thing. Mine is a 92 but has a connector like the first one you posted (green silicone boot). Seems a little odd cause from my research, it should have the other one (grey silicone boot). I'm not sure why that is, but I'm thinking if I switch to the newer one, that will make the car more orginal and that's what I'm looking to do. You mentioned that you got a newer solenoid. What did you get it? Did you buy it new?
Thread Starter
Senior Member
Joined: Mar 2007
Posts: 576
Likes: 0
From: Norway
Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
Re: TPI EGR solenoid question??
I'm pretty much looking to do the same thing. Mine is a 92 but has a connector like the first one you posted (green silicone boot). Seems a little odd cause from my research, it should have the other one (grey silicone boot). I'm not sure why that is, but I'm thinking if I switch to the newer one, that will make the car more orginal and that's what I'm looking to do. You mentioned that you got a newer solenoid. What did you get it? Did you buy it new?
Another option is to search on ebay but try out rockauto first.
Joined: Mar 2000
Posts: 5,711
Likes: 133
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: TPI EGR solenoid question??
That looks like the wrong solenoid, TPI has to be N/O that one is normally closed.
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iTrader: (1)
Joined: Jan 2010
Posts: 478
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From: Los Angeles
Car: 1991 RS/B4C clone
Engine: 355 TPI
Transmission: Probuilt Street/Strip 700r4
Axle/Gears: 7.625 axle with 3.23 gears/TrueTrac
Re: TPI EGR solenoid question??
If you want a good source of hard to find TPI parts, check out http://www.ecklerscorvette.com/engin...emissions.html
To be honest, we're going to have to let the Vette guys do the heavy lifting because lord knows how cheap the third gen community is.
To be honest, we're going to have to let the Vette guys do the heavy lifting because lord knows how cheap the third gen community is.
Re: TPI EGR solenoid question??
Hi there...
I need some help on my 87 305 TPI engine..It is a Chevrolet Camaro...
I need to replace my EGR vacuum solenoid, but that is impossible since that part is no longer available any place.
I was thinking of something like this:
Change wiring connector to EGR wiring connector for Camaro 91-96models.
From this:
To this:

The second connector (blue) is for 87 to 92 camaro TPI systems.
I have the green one like the first picture.
My question is: If i replace the pigtail connector and buy a new solenoid like this:

Will that work on my TPI system?...I can modify that bracket to fit.
But I was just curious if the EGR system will work with this, because personally myself I think it is just basically a simple vacuum switch that get's "ground" signals from the ECM that turns the switch ON and OFF with correct pulses. But that is controlled by the ECM.
Would this work out for me???
I need some help on my 87 305 TPI engine..It is a Chevrolet Camaro...
I need to replace my EGR vacuum solenoid, but that is impossible since that part is no longer available any place.
I was thinking of something like this:
Change wiring connector to EGR wiring connector for Camaro 91-96models.
From this:
To this:

The second connector (blue) is for 87 to 92 camaro TPI systems.
I have the green one like the first picture.
My question is: If i replace the pigtail connector and buy a new solenoid like this:

Will that work on my TPI system?...I can modify that bracket to fit.
But I was just curious if the EGR system will work with this, because personally myself I think it is just basically a simple vacuum switch that get's "ground" signals from the ECM that turns the switch ON and OFF with correct pulses. But that is controlled by the ECM.
Would this work out for me???
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