I just got my Accel intake and it has 3 large threaded holes on the front of it. I know the 2 toward the center are for the coolant and the temp sensor but what is the 3rd one off toward the passenger side for?????? I don't remember that being there on my stock intake?

Thanks!

 

I have the same intake. For our cars it is not needed, so just plug it.

 

Thanks. Off to the nut and bolt store then...

 

The third one is the cold start injector sensor. Only needed for 85-88 applications. If the temp is under a certain temp (don't remember what it is), then this sensor tells the cold start injector to fire on startup. Not needed on '89-up cars..

 

Sorry, I wasn't talking about the cold start. This was another threaded hole that opened into the coolant passage in the front of the intake...

 

I'm not really sure what they are, but I just checked on mine ('86 TPI) and the top one is coolant hose and the bottom two are both sensors. I bet Clocker is right, you probably just need to plug one if your wiring harness doesn't have a hookup for it.

 

Yup I used a 3/8" hex head stainless plug for it. I used thread lock and threaed in until it was flush. Look great....

 

Exactly.. :lala:

Its the sensor that tells the cold start injector (located on the intake manifold, plugged into the fuel rail and the wiring harness) to fire for a maximum of 8 seconds if it detects a coolant temperature of under 100*F (researched it after my first post).

'89-up cars do not have this, nor do they have the CSI on the intake manifold nor the wiring plug or fuel line for it. In the '89-up cars, they use a longer injector PW for cold starts.

 

I feel like a dumbass, I didn't even see the last half of your post mentioning the temp sensor. All I saw was cold start injector

I'm sorry dude...