New Scanmaster Numbers

[blipmode188]

I figured I better start a new thread
Mine was so deep Im not sure anyone would pay attention.
Sorry but I really need some help with this.


I took the advice from almost everyone on the board and have some new scanmaster numbers

First the original ones about a week ago.

AF = 05-06
L8 = 45
BAT = 13.9
INT = RANGED FROM 123 TO AROUND 133
BL = 146
MPH = 0.0
CLT = 170
ATS=57
r = 625 to 725 (all over the place)
TPS = .40 WOT = 4.38
IAC = 23 THRU 25
CC = would start around 08 and increment up to 255 and start over ?
MAL 0 0

TODAY I blocked off the vacuum block and its hoses and have these new numbers

AF=05
LB=41
BAT=13.9
INT=123
BL=134 (REV IT JUST SLIGHTLY DROPS TO 128 THEN BACK TO AROUND 133 TO 134)
MPH=0.0
CLT=167
ATS=58
R=AROUND 650
TPS=.48
IAC=28
CC=START AROUND 02 UP TO 255

FUEL PRESS WITH LINE ON AT IDLE = 40 TO 41

ANY CLUES OF WHAT THE NEW NUMBERS MEAN BESIDES VAC LEAK SOMEWHERE ?

ALSO STILL SMELLS LIKE IT IS RUNNING A LITTLE RICH

IM GUESSING THE TPS IS A LITTLE HIGH

ALSO THERE IS INSTUCTIONS ON GNTYPE.ORG THAT SHOWS HOW TO ADJUST TPS AND IAC BUT EVERYTIME I GO THERE I JUST GET A BLANK SCREEN AND CANT GET TO THEM
CAN SOMEONE POST THEM HERE PLEASE ?

ALSO DOES THE REVING UP SLIGHTLY AND THE BLS DROP TO 128 THEN GO RIGHT BACK TO AROUND 133 OR 134 INDICATE A HEADER LEAK ?

WHENEVER I DRIVE THE CAR AND PUSH IT TO KICK THE TURBO ON JUST A LITTLE BIT WHEN I LET OFF THE GAS I HEAR A BUBBLING OR SORRY FARTING SOUND COMING FROM THE RIGHT FRONT OF THE CAR ABOUT WHERE THE HEADER IS IM GUESSING ?

THANKS FOR ANY HELP STEVE

I THINK I AM ZEROING IN ON SOME OF THE ISSUES WITH THIS CAR

MAYBE ?

 

[blipmode188]

Can someone look these numbers over and give some constructive advice ?
I have been fighting this car for over a year and think I am making some
headway, just not exactly sure of what the numbers are really telling me.
Thanks
Steve

 

[mikestertwo]

Look here.
General Maintenance and Up Keep

 

[GNVYUS 1]

You don't need to mess with the TPS or the Throttle Position Screw so put the TPS back to .42 and leave it alone.

IAC is good, it moved up because you found a leak and it needed more IAC to stabilize.

You are probably hearing the turbo sneeze or surge when you are in it a little bit.

If you have 41psi line on, you are way too high line off. Most chips run around a 42psi line off pressure.

You still have vacuum leaks aside from the vacuum block, probably a big one, if BLM's are still around 134 with a fuel pressure around 47psi line off.

Try Buick GN's boost leak tester, it will find everyone, especially at 20psi.

 

[scot w.]

As "DR Booster" stated above, Adjust your TPS back to .42 while at an idle.

As far as the IAC goes, Normally It should be real close to 128 at idle and it sounds like when you rev it up, the car is overcoming the leak thats why it goes to 128. You do need to find the leak and double and triple check everything on the car!! ALL vacume-lines, Gaskets, EVERYTHING!

And as dr-booster mentioned Your fuel pressure is Too High! At idle pull the V-line off and adjust the screw out to .42 then tighten the lock nut and put the V-line back on..

The best thing you can do for yourself is read as much information about these cars as possible. You will need it sooner or later. Is there anyone in your area who knows alot about the TR's to take it to? We will help the best we can but it only helps so far not being able to be right there by the car.

Scot W.

 

[BW Jones]

i believe 'scot w' meant to say the BLM and/or INT should be real close to 128 at idle. obviously, if you have an IAC count of 128, there's something wrong.

also, a good base fuel pressure setting is 43 lbs with the vacuum line removed from the fuel pressure regulator. thereafter, you can make minor adjustments as needed to optimize your tune.

if no other changes are made, how does your TPS voltage change by nearly a tenth of a volt by blocking off the the vacuum block? could there be a problem with the TPS?
try adjusting your TPS to approximately 4.8V at WOT (4.38 is quite a bit on the low side for WOT). if you can't get more than 4.38V at WOT and if the voltage did change at idle without making adjustments, replace the TPS ..... it is defective.

bw jones

 

[scot w.]

i believe 'scot w' meant to say the BLM and/or INT should be real close to 128 at idle. obviously, if you have an IAC count of 128, there's something wrong.

also, a good base fuel pressure setting is 43 lbs with the vacuum line removed from the fuel pressure regulator. thereafter, you can make minor adjustments as needed to optimize your tune.

if no other changes are made, how does your TPS voltage change by nearly a tenth of a volt by blocking off the the vacuum block? could there be a problem with the TPS?
try adjusting your TPS to approximately 4.8V at WOT (4.38 is quite a bit on the low side for WOT). if you can't get more than 4.38V at WOT and if the voltage did change at idle without making adjustments, replace the TPS ..... it is defective.

bw jones

Thanks! Yeah I meant the Block Learns (BLM's) 128 @ idle

 

[BW Jones]

i just read the thread 'blipmode' previously posted regarding his ScanMaster readings. if he hasn't yet replaced the leaking MAF duct (tube between the MAF sensor and turbo inlet), he really needs to. tuning will never be good with all the unmetered air entering the engine.

blipmode ....... if you don't have another MAF duct to replace the leaking one, pull off the leaking one and wrap the entire duct with black electrical tape (making sure there are no leaks). put it back on at look for changes in your SM readings.

bw jones

 

[blipmode188]

Im gonna get one of the pressure leak testers
On a stocker is 2O LBS ok or is it too high
I ll start around 15 and see what it turns up.
Does anyone know, I have seen the leak detectors,
but some on here have said to put it on the turbo inlet
and others said the IC inlet ?
Thanks Steve

 

[blipmode188]

Stupid me
The line was on the fuel pump, but I have the vacuum block
BLOCKED OFF totally.
Thats why at idle line off (but no vac) it was around 40 or 41

 

[blipmode188]

Im wondering if i moved it when try to pull the hoses off of the vac block ?
Bad idea anyway.
Should have just cut them off
Broke the plastic vac block and now had to order a aluminum one

 

[blipmode188]

I rechecked the air inlet duct
A couple of wires broke thru the outside but there
dont appear to be any leaking
That is a multy layer hose with the wire encassed between them
I took it off filled it with water, no leaks
No as good as air but I think its not leaking

 

[blipmode188]

Yeah I know
I have been reading all sorts of posts here, I have the shop manuals I go to
also. There are so many things to know about these cars I really had no idea
of what I was getting myself into.
I opted for somewhat of a lower mileage car, when in fact a higher mileage
better maintained car would have been much wiser.
This car has done a lot of sitting but that isnt maintenance.Things age and go bad and this one seems to be full of them.
Should have waited until this year to by one
There appears to be so many better cars for less money than I paid for mine
Thanks for the help though
Steve

 

[Junior Samples]

its easy to get disenchanted real quick but hang in there, keep picking away at the bugs.

I started up mine after work and took it out and it ran like hell, the other day i was having this weird hiccup at idle in park that i tried for days to pinpoint by adjusting this and that, replacing this and removing that and never got it figured out...but today it ran great, idled smooth etc

So your not alone out there

Mike

 

[blipmode188]

I was reading other post about leaks and they said when they
blocked off their vac block they also plugged the pcv valve
What I did was install a solid gasket under the vac block
removed all vac lines including pcv line and left them open.
Was I supposed to also plug up the the pcv hole or hose ?
There is currently no check valve in that pcv line yet either but I ordered one
Incidentally I am getting a leak detector to connect to the turbo and run a little pressure detection.
This is gonna be good !
Steve

 

[GNVYUS 1]

I don't see the need to plug the PCV after you block off the TB block, it's acting like a valve cover breather at that point and not recirculating the fumes from the crankcase back into the intake.

Makes sense why your fuel pressure what like that, it's already line off.
You have a few leaks but also try raising the pressure to 42 or 43 as that is generally how chip makers set up the chips as injectors are generally flowed at those pressures. 1 psi will help the idle BLM even with the leak.