Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

HER GTS stalls, runs rough

Thread Tools
 
Search this Thread
 
Old 02-21-2010, 10:18 AM
  #31  
Angela R
Addict
Lifetime Rennlist
Member
 
Angela R's Avatar
 
Join Date: Aug 2007
Location: WOR Miss September '08 Miss February '09
Posts: 986
Likes: 0
Received 0 Likes on 0 Posts
Default

Randy.............. get that car up here!
Old 02-21-2010, 12:26 PM
  #32  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default

Posted by Angela R
Randy.............. get that car up here!
Why should I fair lady? The last time I made that arduous journey you were no where to be found. With the exception of Lady Zane and Lady Laura I was left to deal with the hairy bohemians.

Besides, it's kind of hard to push a car that far at my age.

Funny that you should suggest that I come to Dallas; Cheryl and I were talking about making a fun trip and came up with the idea of a small weekend gathering with the Dallas area crowd. Maybe we could plan a get together in your area in the next month or two. Could be fun.
Old 02-22-2010, 03:25 PM
  #33  
Angela R
Addict
Lifetime Rennlist
Member
 
Angela R's Avatar
 
Join Date: Aug 2007
Location: WOR Miss September '08 Miss February '09
Posts: 986
Likes: 0
Received 0 Likes on 0 Posts
Default

Now, now....I was there on Friday Just had to fly out Saturday morning to go pick up my kiddo!

Y'all should come on up, you know it will be a good time Or I can send the boys down to you - help you with your car and do a little pig huntin'
Old 02-22-2010, 04:07 PM
  #34  
Cosmo Kramer
Race Car
 
Cosmo Kramer's Avatar
 
Join Date: Jan 2009
Posts: 4,659
Received 182 Likes on 87 Posts
Default

Could be a fuel damper and/or FPR messing up, causing the car to run with either too much fuel or not enough.
Old 02-22-2010, 10:04 PM
  #35  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default

The MAF had come loose and was loose again when they restarted the car. Checked a couple of spark plugs, completely black and wet with fuel. We're going to clean the plugs and try again now that the MAF is resecured.

Will update Wednesday, tomorrow is booked.

Thanks, all.
Randy
Old 02-22-2010, 11:19 PM
  #36  
pcar928fan
Nordschleife Master
 
pcar928fan's Avatar
 
Join Date: Apr 2008
Location: Austin, TX
Posts: 9,337
Likes: 0
Received 4 Likes on 4 Posts
Default

Fingers crossed for you Randy!
Old 02-23-2010, 09:54 PM
  #37  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default

Posted by Donald
If you want to trade, I'll give ya my '95 Tahoe, throw in a Benjamin and arrange for Dan to give you Moonflowers.
I do have a couple of spare LH units if you need them, and if you are in BFE-says Sean-, I'm right on the edge!

__________________
'90GT
You have a really cute wife. Let me talk to Cheryl about polygamy. If you don't hear back from me contact at: Beeville Cheap Funerals www.shudayomouth
Old 02-23-2010, 10:07 PM
  #38  
SeanR
Rennlist Member
 
SeanR's Avatar
 
Join Date: Apr 2006
Posts: 35,700
Received 501 Likes on 267 Posts
Default

How'd it go this morning?
Old 02-24-2010, 11:21 AM
  #39  
Donald
Three Wheelin'
 
Donald's Avatar
 
Join Date: Jun 2001
Location: Texas
Posts: 1,451
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Randy Carter
You have a really cute wife. Let me talk to Cheryl about polygamy. If you don't hear back from me contact at: Beeville Cheap Funerals www.shudayomouth
Originally Posted by SeanR
How'd it go this morning?
Well, we haven't heard back...
Old 02-24-2010, 09:13 PM
  #40  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default

Finally found time to make it by the mechanic's shop this afternoon. All of the plugs were clean and the MAF was reattached. It seemed to be running normally so I took it for a road test. At low speeds everything was fine. Once out of town I hammered it and it ran pretty good but was significantly lower in power than when running right. Definitely running on 8 cylinders.

I think the first time I floored it the MAF came unseated again. Limped back to the shop and verified that the MAF had come loose again.

I watched my mechanic reseat the MAF the day before and he tightened the band so tight he was almost afraid it would cut the rubber boot the MAF seats in.

Have any of you had problems with the MAF not staying seated? Remember, this is a super charged car. Is there another attachment mechanism we're missing in addition to what I will call the hose clamp?

Any suggestions would be appreciated. Thanks.

Uh Donald, after much groveling and cleaning the house for her she decided to let me live.
Old 02-24-2010, 10:52 PM
  #41  
Jim R.
Addict
Rennlist Member

 
Jim R.'s Avatar
 
Join Date: Mar 2004
Location: Long Island and Lake George, NY
Posts: 917
Received 10 Likes on 4 Posts
Default

I have replaced the stock clamp with a stainless steel T-bolt clamp, has about 3 times the width of the factory clamp...in theory 3 times the clamping force. So far, no MAF "creep" with probably twice the PSI you are running. I don't remember clamp size, just went to a local speed shop and matched it up to the boot.

Make sure the MAF flange and the rubber boot are really clean and grease free as well. You can also run a couple of long zip ties from the lower MAF clamp to the "ears" on the MAF. That method held very well until I upgraded the clamp.

Jim

Last edited by Jim R.; 02-24-2010 at 11:53 PM.
Old 02-25-2010, 12:27 AM
  #42  
Tom. M
Deleted
Rennlist Member
 
Tom. M's Avatar
 
Join Date: May 2001
Posts: 5,472
Received 201 Likes on 121 Posts
Default

I had that issue with my rear turbo setup. I ended up using JB Weld to make a lip around the lower part of the MAF and it worked great.
Old 02-25-2010, 09:17 AM
  #43  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally posted by
Tom. M I had that issue with my rear turbo setup. I ended up using JB Weld to make a lip around the lower part of the MAF and it worked great.
Originally posted by Jim R.
I have replaced the stock clamp with a stainless steel T-bolt clamp, has about 3 times the width of the factory clamp...in theory 3 times the clamping force. So far, no MAF "creep" with probably twice the PSI you are running. I don't remember clamp size, just went to a local speed shop and matched it up to the boot.

Make sure the MAF flange and the rubber boot are really clean and grease free as well. You can also run a couple of long zip ties from the lower MAF clamp to the "ears" on the MAF. That method held very well until I upgraded the clamp.

Jim
Thanks gentlemen. I think we'll try cleaning first and then move on to your other two suggestions. It's obvious the MAF won't stay in place as is. I'll let you know what works.
Randy
Old 03-04-2010, 08:22 PM
  #44  
Randy Carter
Rennlist Member
 
Randy Carter's Avatar
 
Join Date: Nov 2006
Location: South Texas
Posts: 3,254
Likes: 0
Received 0 Likes on 0 Posts
Default Update/Closure

Originally posted by JimR
I have replaced the stock clamp with a stainless steel T-bolt clamp, has about 3 times the width of the factory clamp...in theory 3 times the clamping force. So far, no MAF "creep" with probably twice the PSI you are running. I don't remember clamp size, just went to a local speed shop and matched it up to the boot.

Make sure the MAF flange and the rubber boot are really clean and grease free as well. You can also run a couple of long zip ties from the lower MAF clamp to the "ears" on the MAF. That method held very well until I upgraded the clamp.

Jim
You were spot on Jim, thank you. I had it cleaned and strapped down and the car is running as it should.

I believe the car had two problems, one related to the internal fuel pump and one definitely related to the MAF blowing out of it's boot.

The first time the car stalled was more severe than occurred after the fuel pumps/filters were replaced. If you look at the pics on page one posted by Jim M his bottom photo is identical to the condition of our internal fuel pump. I think this contributed to the problem of the MAF blowing out of it's boot.

I'll get the wider straps as you recommended and hopefully this will be the end of the story.

Thanks to all for your suggestions.
Randy
Old 03-04-2010, 08:40 PM
  #45  
SeanR
Rennlist Member
 
SeanR's Avatar
 
Join Date: Apr 2006
Posts: 35,700
Received 501 Likes on 267 Posts
Default

Glad to hear it wasn't anything else. Congrats.


Quick Reply: HER GTS stalls, runs rough



All times are GMT -3. The time now is 11:30 PM.