Messages

1

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 27 2016, 10:30:01 AM »

If this is an original maf you are wasting your time with it. There is a reason just about every turbo Buick you see that is driven has a translator and a newer style maf. The originals have lived their life cycle.

Added: After reading Steve input, I'm also willing to bet this maf doesn't make it to 255 @wot either. The translator is hard to swallow at $200 but you only have to buy it once. Worth it in aggravation. Then you use commonly available mafs you can get at a wrecking yard for a pittance. Or new or rebuilt ones for cheap compared unreliable stock ones.

Hi Texas T.  I hear ya. Cut to the chase and eliminate the MAF given the ~30yrs of experience with them.  Even Steve said right off the lot the MAF was bad.  I've learned something and have the MAF feather in my cap  

2

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 27 2016, 12:32:49 AM »

Make sure it has at least one screen in it and that the maf is not necked down inside.    Also be sure to check those wires in the connector to make sure they are firmly attached to the pins as Larry mentioned

I'm still wondering why my PL showed the maf readings in the 20's instead of 4-6 at idle.

there will be two screens coming with this particular MAF.  Not sure what you mean by "necked down inside".  do you mean nicked? Like if the screen has nicks?  I need to figure out how to confirm fi the wires in the connector are firmly attached to the pins.  Thats still outstanding to confirm. 


The PL readings spike to the 20's but when its not spiking its around 7.  higher than 4-6 but as you mention on vortexbuicks, it could be idling at around 7 if the rpms are higher.  Thing is, i see rpms around 650-700 at idle.  not 800-850.


I posted updated PL files on the turbobuick thread.  The MAF tap (with screwdriver handle) created spikes.

3

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 27 2016, 12:28:01 AM »

When I looked at Mikes PL files a couple of weeks ago, what stood out was the 'spikey' MAF readings. A lot of times I compare my own files to others to get an answer as to what's going on. My best guess is his MAF is crapping out.

"Spikey Mikey"... i'm sure i was called that as a kid growing up.  The MAF tap created spikes.  I uploaded the PL file to the turbobuick thread.

4

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 27 2016, 12:23:41 AM »

Good evening. I was able to get out of work early and do the "MAF Tap" test.  I also did a few more runs with PowerLogger.  http://turbobuick.com/threads/hesitation-stumble-at-various-throttle-positions.443100/page-2



You can see my updates on the other thread.  Not sure if you guys want me to be posting here or turbobuicks.co m.  Let me know.  I thought I'd continue the thread there but I can transition here.  Good either way.

5

IHADAV8 Playground / Re: Drive Your "Collector Car" / "Investment"

« on: August 26 2016, 12:44:06 PM »

Haha. great articles.  Totally agree. Love the end of Clarkson's article "He’d still be on his way to a useless garden centre, in his crummy Citroën with his ugly wife and his two gormless children.".  He has such a way with words. 
[/size][/color]
[/size]Pebble Beach article... same context.  "[/color][/size]Cars need context. Otherwise, they’re vaguely mechanical-inspired sculptures. Pebble Beach is a very nice sculpture garden".  [/color]


I'm not much of a gardener.  I do mow my lawn though, at least the front lawn

Somewhat related, bit of a stretch...


started listening to the School of Hot Rod Radio Show.  Latest episode is about appraisals and insurance.  Guest was [/size]OSCA Champion Driver, Bill Lutz.  They talked about Turbos a lot... even though it was a show about appraisals and insurance.  Right at the begging Bill talkd about his dad selling #418 GNX.


http://ernlive.com/show/school-of-hot-rod-radio/113/episodes/insurance-appraisals-full-show-73

6

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 26 2016, 10:58:30 AM »

MAF is on the way from TurboKeith (turbobuicks forum). Another MAF and ECM are also on the way. I will head to Wicked Garage with my laptop and powerlogger and tap  the MAF a bit.  See if we get any strange readings.  Will post once I get them.  Might be later today if I can get out of work early.  Otherwise early next week.

7

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 25 2016, 04:39:32 PM »

Hey Michael - its great to meet you.  Glad that you're local.  Currently the GN is at Wicked Garage out in Greely.  They've been doing the work.  I don't think its driveable though. 


Anyways, i'll call you either later today or tomorrow to discuss further. 



Cheers,
Mike

8

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 25 2016, 12:09:44 AM »

Factory MAF. I've heard of the LT1 MAF and translator.  I'll likely evolve to that in the future once this is resolved.  I have two Known Good MAFs ordered from some good guys on tubobuicks.  Coming from the US. I also have a Known Good ECM coming soon.


The chip is old.  Kenne-Bell KB9007PR chip.


As you say in your vortexbuick site, "what changed" before the issue happened.  I took the car to a garage to have an exhaust leak inspected.  The exhaust leak was sealed at the manifold and turbo.  The turbo was removed to fix the seal. Then the hesitation started.  So... something may have been knocked or broken during that work.  Since it looks like something electrical, I asked the garage to look at the grounds as well (as pointed out on vortexbuicks site).  Update on that is pending.


The garage removed the MAF but the symptoms persisted. 


I also asked them to perform the Trouble Code 45 procedure to see if it leads to a bad ECM.


We are ordering the Denso O2 as well.  We recently installed the NGK O2 but everyone says Denso is the way to go.


The only other thing that I can think of is I replaced the fuel tank and pump last year.  Its a Holley 12-900.  After it was installed in 2015 I had some fuel leaks but they were fixed.  Too much pressure on the old lines.  Then this year when we started investigating the hesitation, the garage checked the fuel pressure and it was at 80 psi. A new fuel pressure regulator was installed and that resolved that problem... <edit> resolved the problem related to the high fuel pressure.

9

New Member Introductions and Welcomes! / Re: Newbie

« on: August 24 2016, 11:38:27 PM »

Welcome Rizzo.  I joined today as well.  Cheers. 

10

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 24 2016, 11:35:05 PM »

Hey Steve - the thread referred to is here: http://turbobuick.com/threads/hesitation-stumble-at-various-throttle-positions.443100/


let me know if you'd like me to post files here as well.

11

New Member Introductions and Welcomes! / Re: Welcome Darkryd

« on: August 24 2016, 11:03:04 PM »

Hi everyone.  As Scooby (can I call you Brad?) said, I'm from Ottawa (Barrhaven). Scooby thanks for inviting me to the club. My 87 GN, the "darkryd" has been in the family since it was bought in 87.  Never seen the winter. I took it over from my brother in 2011 who took it over from my Dad in 2001. 


I've been exercising a hesitation demon. Scooby Doo has been generous to provide advice/direction.  Where I'm at now is swapping in known good parts.  Starting with MAF and ECM.  Also replacing the O2 with a Denso.  Powerlogger files are posted on turbobuick.com .  parts are being shipped from a few members of turbobuick from the US. [size=78%]http://turbobuick.com/threads/hesitation-stumble-at-various-throttle-positions.443100/page-2#post-3690547[/size]


Looking forward to learning and contribute where I can.


Cheers,
Mike