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Discussion Starter · #1 ·
Well after a week of vacation,Im getting very close I think,
No more code 32,Still seems to be lacking power,Builds boost,Wont spin a tire though,pulls ok on the highway,Seems to max out at about 12 Lbs on the factory gauge,Im hoping one of you turbo buick experts can pointme in the rigth direction,Gotta be some common issues to look at,
Thks Steve
 

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turbo in good condition?

Wastegate plumbing is correct and fully functional?

What device is controlling the boost?

factory boost gauge still reads correctly?

Intercooler full of oil?

Engine is mechanically sound?

Car has a catylitic converter? Is it plugged up?

What is the stall of the torque converter when foot braking?

What are the blms, O2s, etc at launch?

Any leaks in the intake system between the maf and the throttlebody?

How much, if any, timing retard is occuring? What chip are you running?
 

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I don't think the factory boost gauge is very accurate.
If you power brake, does it burn the tires?
What RPM does the convertor stall at?
Some common problems with no power on take off would be running to rich and you might have the incorrect convertor.
 

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Discussion Starter · #4 ·
turbo in good condition?
Seems to be in good condition

Wastegate plumbing is correct and fully functional?
Plumbing is all there correct and functional not sure.....?

What device is controlling the boost?

factory boost gauge still reads correctly?
Looks to be reading correct,

Intercooler full of oil?
Unsure is there a way to check it ?


Engine is mechanically sound?
Compression is all good,New plugs,Wires,Manifolds,New tranny built to factory specs with stock convertor,

Car has a catylitic converter? Is it plugged up?
Brand New

What is the stall of the torque converter when foot braking?


What are the blms, O2s, etc at launch?

Any leaks in the intake system between the maf and the throttlebody?
No seems air tight

How much, if any, timing retard is occuring? What chip are you running
Brand New GM Ecm and factory GM chip

Wow,You know the spots....Thks
 

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to check the IC for oil in it- remove the hose couplers and peek inside- there might be a little oil film- but shouldnt be much

and for the chip id move to a turbotweak- GM chips dont like modern day fuel
 

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Discussion Starter · #6 ·
ajt86 said:
to check the IC for oil in it- remove the hose couplers and peek inside- there might be a little oil film- but shouldnt be much

and for the chip id move to a turbotweak- GM chips dont like modern day fuel

Is it common to get oil inside it ?
Would this effect performance ?

Thks Steve
 

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its common for a turbo seal to be leaking to get oil in there- if its just a small amount i wouldnt pin the problem on it- but if its got a good amount in it it would effect the efficiency of the intercooler- and you would also be injecting oil into the engine wich isnt good but you would notice that- it would look like a misquito smoker coming down the road if it was really bad
 

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fsmotorsports said:
turbo in good condition?
Seems to be in good condition
So there is barely any in and out movement of the shaft on the compressor wheel and it does not move enuf sideways to hit the housing?

Is there oil in the up pipe to the throttlebody? Or in the turbo outlet? Does the car still have the factory vent from the passenger side valve cover to the turbo inlet? If so, it should replaced with a breather and the inlet to the turbo plugged.

Wastegate plumbing is correct and fully functional?
Plumbing is all there correct and functional not sure.....?
The factory Y is installed in the correct orientation?

What device is controlling the boost?
Are you using the factory wastegate solenoid for boost control? If you pull the hose off it, does the boost shoot up? Be careful and don't allow it to go past 15#!!!!!!!!!!!!!!!!! In other words, get your foot off the gas if it goes higher than it currently does :)


factory boost gauge still reads correctly?
Looks to be reading correct,
both the tach and boost gauge are notoriously inaccurate as they get older.

Intercooler full of oil?
Unsure is there a way to check it ?
Take it off and flush it out with gasoline, or something similar.



What is the stall of the torque converter when foot braking?
You need to get a scantool, or an accurate tach and determine the rpm of the engine when the rear wheels begin to turn when the car is in drive, your foot on the brake, and you begin to feed the gas to it.


What are the blms, O2s, etc at launch?
Do you have a scantool?

How much, if any, timing retard is occuring? What chip are you running
Brand New GM Ecm and factory GM chip

Wow,You know the spots....Thks
At a minimum, you need a scantool and a fuel pressure gauge to keep one of these things running without blowing it up.

You need a modern chip, a clean set, and preferably a new set of injectors matched to the chip.

If they replaced the torque converter when the tranny was redone, and it was not a Buick specialty place, then I would guess the torque converter is a generic replacement which does not have enuf stall to launch the car. Proper converter should brake stall to at least 2200 rpm or the car will not come off the line.

As far as the boost goes, there is a chance that, if the plumbing is correctly oriented, the wasegate solenoid is not working. Probably for the best as you don't really want any more boost until you have a better chip, decent fuel pump and hot wire, plus a scantool to let you know if you have timing retard due to detonation.

Have you been reading the articles over on gnttype.org in the technical resource section? very good place to learn the basics. :)
 

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Steve I called and left you a message,

I see you have a fresh rebuild on the tranny, what convertor did they use?

is it the same convertor from your car? I just had one from a shop that had no idea what they were doing and the put a D4 convertor that would be stock in your montecarslow, performance suffered greatly wouldn't even spin the tires, check your convertor and make sure it has 5s stamped in it all around it. also check stall speed make sure it's over 2000 rpm brakes on and foot into the throttle
good luck,

PM me again or call if you still need assistance

Bill
 
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