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  • SN95 4.6L Mustang Tech

Hesitation under Boost - Help

  • Thread starter Thread starter 01KBGT
  • Start date Start date Apr 10, 2008

01KBGT

New Member
Jun 13, 2005
14
0
2
Long Island
Apr 10, 2008
#1
  • Apr 10, 2008
  • #1
Here's the story. I have an 01 GT with a Kenne Bell 1.7. About 2 weeks ago one of the hoses connecting from the back of the upper intake to the firewall, I'm guessing going to the heater coil, blew and leaked coolant all over the motor, and I had to drive a couple of miles to get the car home pissing coolant.
The hose has been replaced and the coolant system filled and bled. The issue now is that under any boost, the car hesitates and breaks up. I changed out the plugs which were in bad shape. It has gotten a little better, but still hesitates under any load. Idles fine, drives fine outside of boost, no check engine light. Any ideas? Thanks.
 
S

SilverBullet00

New Member
Jul 5, 2004
1,150
0
0
Wichita, KS
Apr 11, 2008
#2
  • Apr 11, 2008
  • #2
Are you getting coolant in your cylinder causing you to miss?
 

01KBGT

New Member
Jun 13, 2005
14
0
2
Long Island
Apr 11, 2008
#3
  • Apr 11, 2008
  • #3
SilverBullet00 said:
Are you getting coolant in your cylinder causing you to miss?
Click to expand...

Doesn't look like it. I would assume I'd see smoke if coolant was getting into the cylinders.
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
Apr 12, 2008
#4
  • Apr 12, 2008
  • #4
Could be a vacuum leak. Do you have a vac/boost gauge? Is there any way you can data log?
 

01KBGT

New Member
Jun 13, 2005
14
0
2
Long Island
Apr 13, 2008
#5
  • Apr 13, 2008
  • #5
the98stang said:
Could be a vacuum leak. Do you have a vac/boost gauge? Is there any way you can data log?
Click to expand...

Yes I have a gauge. Vac and Boost read normal.
 

Gearbanger 101

Straight Outta Locash
20+ Year Stangneter
Aug 10, 2002
9,457
1,377
234
Ontario, Canada
Apr 13, 2008
#6
  • Apr 13, 2008
  • #6
Similar story.....

I popped one of my heater hoses during a hard run when I first got my set up done and soaked my TPS (throttle position sensor), which resulted in all kinds of erratic activity under all levels of throttle. Getting it wet with strait water is one thing, because once it dries out it's usually fine, but soak it with antifreeze and you might as well pitch it and buy a new one.

So....did your TPS get doused in antifreeze when you blew your hose off?
 

blkhorse

Founding Member
Oct 30, 1999
345
1
18
Apr 13, 2008
#7
  • Apr 13, 2008
  • #7
^^ along those same lines, check all coil's and injector harness connections
 
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