1986 TPI front of Intake - sensors, what r they

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Jun 28, 2005 | 07:53 AM

My1986IROC-Z

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Joined: Jan 2005

Posts: 220

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From: Eastern Georgia

Car: 1986 Iroc-Z

Engine: 305 TPI (used to be Carb)

Transmission: 700R4

1986 TPI front of Intake - sensors, what r they

Can you guys please once again identify these so I know what they all are. Thanks - I am new to TPI so please excuse the massive posts and questions.

Jun 28, 2005 | 08:55 AM

dperk

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Joined: Dec 2004

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From: N.E. Ohio

Those are both temperature sensors. One is used for the cold start function that fires your 9th injector. The other is for engine coolant temp. I think the cold start one is #4.

Jun 28, 2005 | 01:40 PM

lesser85

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Joined: May 2005

Posts: 20

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From: VA

Car: 85 Z28

Engine: 305 TPI

Transmission: 700r4

#4 would be the sensor for the cold start valve. #5 is the CTS sensor. This sensor tells your ECM what temp your engine is running at. The cold start sensor is not ECM controlled.