Scanmaster questions -newbie

[juan_valdez_zz4]

I have an 87 Turbo-T Limited that is pretty much stock except for a CAI and a Hooker exhaust with no cat. I am slowly going to start adding some performance parts and I what to make sure I have the stock set-up tuned right and then I can go from there. Here are my readouts with the engine warmed up, idle and in gear
O2 - up and down .1-.8
AF-04
L8-32
BAT-13.2
INT-145
BL-160
CLT-170
ATS-126
R-675-700
TPS-.42
IAC-32
CC-138
All these number look ok, except for my BL which are high which would be lean. What range should I be shooting for? I was reading the "crazy 02s" thread and they were saying that this number is high because of a vacuum leak or exhaust leak pre-turbo. But I went for a drive and the BL go down to 128-130 cruising around and WOT. Also my O2s at WOT are .800-.820 with 2.0 deg knock on the shift and the cc is locked. This makes me believe that it is running a little rich. I just installed a new IAC and O2 sensor becasue the car was idling badly. It has improved now but I think it could be smoother. I am also going to be adding new plugs and wires soon. Are there any things that I need to check, change, etc to get the BL's down? Is it running rich or lean? I just want to make sure I don't go lean and hurt this low mileage motor. Thanks in advance !!!!!!!

Kyle

 

[suicide six]

Blms range 118 to 138. Your wot #s are alittle high.You are lean down low and rich up top.What chip are you using.Has fuel system been upgraded?How old is o2?Injectors stock?How old is fuel filter?

 

[suicide six]

Maf could be going also,cracked header or vac leaks.

 

[suicide six]

AC# CV893C correct pcv?

 

[TurboDave]

If memory serves (doubtfull)
I believe the correct PCV is the CV892 or AC892

 

[juan_valdez_zz4]

Here are some answers to the questions posted....

Has fuel system been upgraded?
As far as I know it is all stock. I know I need to get a new pump and the hotwire kit. Where and what type should I get it? Reds, Walbro (what part #?)

How old is o2?
Just replaced it and the numbers from the scanmaster are with the new AC-Delco sensor.

Injectors stock?
Yes

How old is fuel filter?
Don't know... need to change...will change with new AC filter

How would I check to see if the stock Maf is going? I have bought a 3" Impala MAF and translator plus from a friend but it is not on yet.

PCV valve?.... I will replace it with a new one

Vac leaks?... I sprayed carb cleaner at the vac block (stock) to see if the rpms would jump but they didn't. What other problem areas should I check and how?

Cracked stock header?... When I bought the car the previous owner said it was welded and then he got them coated. I will have to investigate some more.

If there are any other things I need to check tell me and I will try it out. (if I can find the time.... work, work, work, ha ha!)
Thanks again for the help suicide six and TurboDave

Kyle

 

[juan_valdez_zz4]

I forgot to say I believe the chip is stock will need to check....