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What is this ???

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Old Jul 22, 2014 | 01:42 AM
  #1  
claus290373's Avatar
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From: Danmark
Car: Trans Am gta 5.7 1989
Engine: 350 tpi
Transmission: th700r4
Axle/Gears: BG 9 bolt
What is this ???

Hello have changed my Stock manifolds to headers but there is a plug right
Under the passengerside header and the cable is broke what is that for ??
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Old Jul 22, 2014 | 01:47 AM
  #2  
mmadden55's Avatar
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Joined: Nov 2008
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From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: What is this ???

You need a Haynes manual. I believe you are referring to the O2 sensor.
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Old Jul 22, 2014 | 05:27 AM
  #3  
sofakingdom's Avatar
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: What is this ???

O2 sensor is in the driver's side manifold. Probably not that.

The fan switch is in the pass side, between the back 2 spark plugs; and the knock sensor is at the bottom of the block on that side, right above the oil pan.
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Old Jul 22, 2014 | 06:41 AM
  #4  
claus290373's Avatar
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Joined: Apr 2014
Posts: 57
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From: Danmark
Car: Trans Am gta 5.7 1989
Engine: 350 tpi
Transmission: th700r4
Axle/Gears: BG 9 bolt
Re: What is this ???

Oki must be the fan switch

Had to remove the oli dipstick when
I changed the headers but now i Can find
The hole again you know where it is and
Whats the east Way to put it Down again??
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Old Jul 22, 2014 | 09:57 AM
  #5  
hilltop530's Avatar
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Joined: Feb 2012
Posts: 75
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From: Northern California
Car: 1987 Iroc Z28 Camaro
Engine: 5.7 TPI
Transmission: 700R4
Re: What is this ???


Last edited by hilltop530; Jul 22, 2014 at 10:02 AM. Reason: reposted better info.
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Old Jul 22, 2014 | 10:02 AM
  #6  
hilltop530's Avatar
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Joined: Feb 2012
Posts: 75
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From: Northern California
Car: 1987 Iroc Z28 Camaro
Engine: 5.7 TPI
Transmission: 700R4
Re: What is this ???

Didn't look like my first response posted. So, here it is again if it didn't.
The dipstick slides down between two of the header tubes at an odd angle. It ends up closer to the AC/blower motor than you would think. easiest if you have an extra set of hand to help hold it from the top. You'll need to be underneath the car to get it back in. Here is an image of the block so you can see the location. Happy hunting.
Attached Thumbnails What is this ???-thrid-gen-help-photo.jpg  
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