I just got an 89 transam (5.7) litre for FREE. I got it run and did a tune up on it, plugs, wires, cap, rotor, fuel filter, oil, tranny fluid, pcv valves, and cleaned the K&N filter on it. I was wondering what else you guys would reccomend. I was thinkking that i would do the timing on it (what are the specs)? I also want to check the tps (How)? Please shed some light on this subject, because i am not used to fuel injected cars i usually play with carburated cars so any help would be appreciated, i want to get this car running good in stock form so that the BUILD UP CAN BEGIN!!!

 

Should be just one.My van had two,one in each valve cover,when I bought it.
Took me a while to figure out what looked so wrong.

 

Which side is it supposed to be on? and what goes in the hole on the valve cover? Mine has 2. And there are lines to hook them both up and holes on both valve covers.

 

Any side will do,the line with the valve is connected to to manifold vacuum and the other side goes to the air cleaner (in my case to the spacer ring between the tb and the aircleaner).
I simply gutted one of the PCV valves and used it to connect the breather hose to the valve cover,guess that works until the motor develops more blowby.

 

but my car has tpi.

 

Never fiddled with a tpi motor,but the hose without a valve should be taking in air through the air filter,or vent gases that way when vacuum is low and crankcase pressure is high.
That hose should be plugged in somewhere between the air filter and the throttle blades if the principle is the same as on my tbi motor.

 

alright i am thinking it is the one the goes to the throttlebody then.