Misterious Sensor near the Temp Sensor?
05-09-2016, 09:45 AM
#1
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Misterious Sensor near the Temp Sensor?
Hi guys, I' m wondering what is that sensor, near the temp one. It can't be the gauge sensor, since on the 3.1 V& LH0 (mine engine) it' s on the drivers' side.
Someone can help me to figure out this?
Someone can help me to figure out this?
05-17-2016, 05:47 PM
#2
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Re: Misterious Sensor near the Temp Sensor?
Possibly a temp sensor for the ECU, however the guys who frequent the V6 board will be able to tell you for sure.
05-18-2016, 06:47 PM
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Car: 1991 Camaro RS
Engine: 4.8l LS
Transmission: TH350
Axle/Gears: 3.23
Re: Misterious Sensor near the Temp Sensor?
That is some sort of aftermarket sensor, as in my car there is a bung plugging that hole.
05-19-2016, 10:08 AM
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Car: check
Engine: check
Transmission: check
Re: Misterious Sensor near the Temp Sensor?
It is the cold start switch that is used on the prior 2.8l engines. Likely the lower intake is left over stock from '89 and used in the '90 MY vehicle.
RBob.
RBob.
05-19-2016, 11:46 AM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Misterious Sensor near the Temp Sensor?
not possible to use the lower from a 2.8 on the 3.1 due to the vacum passages in the lower intake , 2.8 feeds aic air into air passages in the lower intake to carry fuel from the cold start injector directly into each port
the pcv valve si also plumbed into theese passages
the 3.1 intake has no air/vacum passages in the lower intake because it does not use a cold start injector and the iac directly sends air behind the throttle body
so the factory would not use the 2.8 lower on a 3.1 , however they do interchange with a few vacum line changes
05-20-2016, 08:12 AM
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Car: check
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Transmission: check
Re: Misterious Sensor near the Temp Sensor?
Interesting information about the 2.8l lower intake. So in this case it appears that a fan switch (or similar) was used to plug the hole where the cold start switch resided in the 2.8l engines.
RBob.
RBob.
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05-20-2016, 09:06 AM
#8
Re: Misterious Sensor near the Temp Sensor?
Originally Posted by RBob
So in this case it appears that a fan switch (or similar) was used to plug the hole where the cold start switch resided in the 2.8l engines.
RBob.
RBob.
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