Sensors on the front of the intake manifold
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Member
Joined: May 2015
Posts: 495
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From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Sensors on the front of the intake manifold
Hi guys,
I am re-installing the TPI onto my car cuz the guy I bought it from put a carb on it. Anyway, there are two plug in sensors on the front of the intake manifold. One must be the coolant temperature sender, what is the other one?
Anyone know where I can find an exploded view of all the components?
Thanks!
I am re-installing the TPI onto my car cuz the guy I bought it from put a carb on it. Anyway, there are two plug in sensors on the front of the intake manifold. One must be the coolant temperature sender, what is the other one?
Anyone know where I can find an exploded view of all the components?
Thanks!
Joined: Nov 2008
Posts: 2,097
Likes: 177
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Sensors on the front of the intake manifold
One is the cold start injector switch. the other is coolant temp. http://chevythunder.com/fuel%20injec....%20pg%20B.htm
Thread Starter
Member
Joined: May 2015
Posts: 495
Likes: 3
From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Re: Sensors on the front of the intake manifold
Thanks! I can only find one plug that fits those fittings. According to the color codes on the wires I have the coolant temp plug but I can't find the other. I don't think the guy I bought the car from cut or removed any of the plugs. I figured it would be in the same mass if wires and plugs on the passenger side.????
Junior Member
Joined: Feb 2014
Posts: 27
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From: H2O town WI
Car: 1987Iroc
Engine: 5.7
Transmission: 700R4
Axle/Gears: 3.73
Re: Sensors on the front of the intake manifold
Cold start injector temp switch if older, not sure when they did away with 9th injector what year is the car?
Thread Starter
Member
Joined: May 2015
Posts: 495
Likes: 3
From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Thread Starter
Member
Joined: May 2015
Posts: 495
Likes: 3
From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Re: Sensors on the front of the intake manifold
One is the cold start injector switch. the other is coolant temp. http://chevythunder.com/fuel%20injec....%20pg%20B.htm
OK, I've got it and according to the color of the wires in the wiring diagram I found the wires that plug into it. Only problem is the connector does not match. The wires which match the colors in the wiring diagrams, and are in the perfect location for the cold start injection switch, have what appears to be a fuel injector type connector, not a match for the switch?? The connector looks stock and original. Could it have the wrong sender/switch installed on the manifold????
Joined: Nov 2008
Posts: 2,097
Likes: 177
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Sensors on the front of the intake manifold
Those are your connections? I think you have it right, are you sure they don't connect?
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Thread Starter
Member
Joined: May 2015
Posts: 495
Likes: 3
From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Re: Sensors on the front of the intake manifold
Joined: Nov 2008
Posts: 2,097
Likes: 177
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Sensors on the front of the intake manifold
Rock Auto shows it....EGT4 and Napa.....TS7001
Thread Starter
Member
Joined: May 2015
Posts: 495
Likes: 3
From: Washington State
Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Re: Sensors on the front of the intake manifold
[QUOTE=aliceempire;5925084]Rock Auto shows it....EGT4 and Napa.....TS7001[/QUOTE
Sweet! I have a NAPA just up the road....Thanks
Sweet! I have a NAPA just up the road....Thanks
Junior Member
Joined: Jul 2010
Posts: 85
Likes: 5
From: Minnesota
Re: Sensors on the front of the intake manifold
Can anyone enlighten me?
Mike
I just saw one on eBay that has the sensors as pictured above....I don't have a factory manual to see what it shows, so will wait for guidance!!!!
Last edited by mcb55-210; Sep 3, 2018 at 01:47 PM. Reason: addition
Joined: Nov 2008
Posts: 2,097
Likes: 177
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Sensors on the front of the intake manifold
Sorry for high jacking this post, but I am in the process of rewiring my '85 TPI after a long delay of 15 years. My Cold Start Switch and Coolant Temp Sensor are located as in the picture above, but in the wiring diagram it shows them as reversed in location. Unfortunately I didn't take any pictures before disassembly, and now all these years later I want to make sure I have it right. Even Chevythunder.com has them the opposite of mine and the above picture.
Can anyone enlighten me?
Mike
I just saw one on eBay that has the sensors as pictured above....I don't have a factory manual to see what it shows, so will wait for guidance!!!!
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