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Progress Thread 12th Owner: My '93 Notchback Restoration & Performance Build

  • Thread starter Thread starter Habu135
  • Start date Start date Jul 7, 2019
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Habu135

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#541
  • Nov 25, 2020
  • #541
Cheapskate207 said:
Was it doing this before you got the tune this summer? I went back to read about it a noticed you had a coolant leak. What ever came of that?

Drew
Click to expand...
Yes, it did it prior to the most recent tune and the other two before that. The coolant leak was due to a blown head gasket. That's been resolved. I think I have an extra set of spark plug wires. I'll try swapping those.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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#542
  • Nov 25, 2020
  • #542
Could it be tune related?
 
Reactions: Cheapskate207

Habu135

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#543
  • Nov 25, 2020
  • #543
Mustang5L5 said:
Could it be tune related?
Click to expand...
I don't think it is.

So to complete a basic diagnosis we focus on Air, fuel or ignition. It's not related to the body meaning something rubbing. The car is getting air and fuel. It has no problems consuming large quantities of gas and the problem comes and goes. I think it's spark related.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
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Nov 25, 2020
#544
  • Nov 25, 2020
  • #544
Coil, wires, plugs, cap, rotor, distributor electronics...

last one is also a big potential, especially the pip
 

Habu135

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#545
  • Nov 25, 2020
  • #545
I'm not sure what the "pip" is.

I just called BBK as they're relatively close to me. They don't offer any ability to test the MAF meter and can't suggest anyone to me.

I'm going to run my codes again here shortly, but no Check Engine light is triggered when this issue pops up.
Mustang5L5 said:
Coil, wires, plugs, cap, rotor, distributor electronics...

last one is also a big potential, especially the pip
Click to expand...
Not
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
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Massachusetts
Nov 25, 2020
#546
  • Nov 25, 2020
  • #546
Pip sensor is inside the distributor.

Question On Systoms Of A Bad Pip Sensor

i have a 86 with the sefi 5.0 liter and i have test almost everything i can think of and it is pointing to me at a bad pip sensor inside the distributor. i have a intermittent problem when it acts up i have no spark and no signal to the injectors. but when this happens i also appear to have low...
www.stangnet.com

See post 3 for troubleshooting
 

Habu135

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#547
  • Nov 25, 2020
  • #547
Ran the codes. Same as back in Jul except for one.

KOEO: 85 can purge solenoid circuit failure
87: fuel pump primary circuit fault

KOER: 13 RPM at idle out of range/low
Code 41 popped up which was different from July. HEGO sensor voltage low/system lean.

Other than the dipstick housing is there any other items within the engine bay that would cause arcing or a misfire? My plug wires are running/organized to not touch anything. Hmm. It feels like a misfire or arcing under power.
 
Last edited: Nov 26, 2020

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
224
Massachusetts
Nov 25, 2020
#548
  • Nov 25, 2020
  • #548
You may want to explore that code 41
 

Habu135

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#549
  • Nov 25, 2020
  • #549
Mustang5L5 said:
You may want to explore that code 41
Click to expand...
The O2 sensors are all new
 

General karthief

wonder how much it would cost to ship you a pair
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#550
  • Nov 25, 2020
  • #550
Reset the computer, drive it around, run the codes.
Another thing you can do to test the wires and cap, using a spray bottle of water, mist the plug wires while the engine is running to see if it drops a cylinder.
The code 41 does not mean the 02's are bad,
A miss is usually a cap or wires arcing.
 

Habu135

5 Year Member
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#551
  • Nov 25, 2020
  • #551
General karthief said:
Reset the computer, drive it around, run the codes.
Another thing you can do to test the wires and cap, using a spray bottle of water, mist the plug wires while the engine is running to see if it drops a cylinder.
The code 41 does not mean the 02's are bad,
A miss is usually a cap or wires arcing.
Click to expand...
Can you dive deeper into the misting of the plug wires?
 

Habu135

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#552
  • Nov 25, 2020
  • #552
It has a similar feel as to if the #7 or #8 wire was touching the steel dip stick housing, but I've fixed that by positioning the wires differently.
 

Habu135

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#553
  • Nov 25, 2020
  • #553
Inside of distributor mechanically looks good except I found this little round thing. Very odd.
 

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General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,945
10,584
203
polk county florida
Nov 25, 2020
#554
  • Nov 25, 2020
  • #554
Habu135 said:
Inside of distributor mechanically looks good except I found this little round thing. Very odd.
Click to expand...
Vent, ignore it.
With the engine running at temp spray a mist of water on the cap and wires covering a small area at a time all the way to the plugs.
You say there was an issue with the plug wires at the dipstick tube?
 

Habu135

5 Year Member
Jan 10, 2019
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Nov 25, 2020
#555
  • Nov 25, 2020
  • #555
General karthief said:
Vent, ignore it.
With the engine running at temp spray a mist of water on the cap and wires covering a small area at a time all the way to the plugs.
You say there was an issue with the plug wires at the dipstick tube?
Click to expand...
It's possible for the #7 wire to arc against the dip stick housing. I've corrected that, but it's a similar feel just not as strong.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,945
10,584
203
polk county florida
Nov 25, 2020
#556
  • Nov 25, 2020
  • #556
New wire or just moved it.
 

Habu135

5 Year Member
Jan 10, 2019
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Nov 25, 2020
#557
  • Nov 25, 2020
  • #557
General karthief said:
New wire or just moved it.
Click to expand...
Adjusted/turned the boot so it was farther away from the dipstick base and didn't arc. I could see it arcing while viewing and examing the engine bay in the dark.
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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Nov 25, 2020
#558
  • Nov 25, 2020
  • #558
Code 41 can be a vacuum leak
 

Habu135

5 Year Member
Jan 10, 2019
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Nov 25, 2020
#559
  • Nov 25, 2020
  • #559
Cheapskate207 said:
Code 41 can be a vacuum leak
Click to expand...
Hmm, I could see that, but it wouldn't cause a misfire type sensation while driving.
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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761
541
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Nov 25, 2020
#560
  • Nov 25, 2020
  • #560
You’re probably right about that. I was pointing out the fact that code 41 isn’t always caused by bad o2 sensors.
 
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