i went and got the 02 sensor hookedup to my headers and my check engine is still on. on the back of my tbi unit theres a vacuum connection i put a bypass cap on it i dont know where its suppose to connect please help me on this trouble.


thanx

 

I caped the one in front of the tbi. I don't think you should cap the one in the back of the TBI

 

what error code are you getting?

-=-Mike

 

okay i put the hoses on the front of the tbi but the back is where i dont know what to do.

does anyone know where the vacuum hose connects to, that is on the center of the tbi unit.



also when i hook my map up it starts crappin out on me.

does the map sensor hookup to the egr valve?

what does the egr hookup to.


man this is getting on my nerves.
please help me on all these questions that boggle my mind!!!

thanx

 

the hose on the front of the TBI goes to the stock air cleaner. I have an open element so I stuck a bolt in the tube to cap it. Maybe the thing you have in front should be in back?

 

THe vacum hose in the back of the throttle body is for the MAP sensor. THat is why it is running like crap too. Hook it up and it should be ok. THe map sensor is located on the passenger side hanging down off the cowl. there should be a vacum hose coming out of it as well.

 

Yup, vacuum port on rear of TB is for MAP. Actually it COULD connect to the front port but that would look sloppy. MAP sensor doesn't care as long as it has vacuum. It could even connect to the intake manifold.

How can you guys work on your cars without a Chilton's or a service manual? The vacuum and wiring diagrams alone are worth the expense. BTW there should be a sticker under the hood with a vacuum diagram printed on it too.