• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

1500 Rpm Engine Surge

  • Thread starter Thread starter shopo27
  • Start date Start date Sep 3, 2012
S

shopo27

New Member
Oct 12, 2011
17
0
2
Sep 3, 2012
#1
  • Sep 3, 2012
  • #1
just upgrade with new 36lb injectors, from 24lb and replaced sample tubes (from blue 102 to red 103). 76mm C&L MAF. Engine wont even stay running with a 1500 rpm surge. Tried clocking MAF, checked for proper installation of sample tube, relocated MAF and even messed with fuel pressure. NO help...

Reinstalled the 24lb injectors and sample tube.. Car runs like a champ. WTF.. Rules out IAC & TPS?

306, 76mm MAF, 70mm t/body, f cam, performer rpm intake and heads, 255lph pump, longtubes 5 speed sn93 s/c 4lbs. boost and 12:1 fmu (want to remove FMU)

Is this the right sample tube? Any suggestions?
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Sep 5, 2012
#2
  • Sep 5, 2012
  • #2
Are you using the stock airbox and flat panel filter or something else? If you read the tech help section of their website, C&L said their setup was only specified to work with the stock airbox and flat panel filter.
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
1,332
204
a van down by the river
Sep 5, 2012
#3
  • Sep 5, 2012
  • #3
And how stupid is that?

Sent from my rooted, rommed Galaxy Nexus....
 
S

shopo27

New Member
Oct 12, 2011
17
0
2
Sep 5, 2012
#4
  • Sep 5, 2012
  • #4
jrichker can you please tell me where you read this. I cannot find this info on the C&L website. I hope this is wrong, due to the point that they sell intake pipes, MAFS ect. With K&N coned air filter. Not being a smart ass but this sounds ridiculous.
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Sep 5, 2012
#5
  • Sep 5, 2012
  • #5
shopo27 said:
jrichker can you please tell me where you read this. I cannot find this info on the C&L website. I hope this is wrong, due to the point that they sell intake pipes, MAFS ect. With K&N coned air filter. Not being a smart ass but this sounds ridiculous.
Click to expand...

See http://www.stangnet.com/mustang-for...roubleshooting-poor-running-condition.855870/. C&L has been busy redesigning their website, so the link to C&L does not work. However, the general discussion sheds some light on problems surrounding C&L MAF's. The conical filter inside the engine compartment of an 86-93 Mustang can be affected by sucking up hot engine air and the turbulence due to the fan.
 
S

shopo27

New Member
Oct 12, 2011
17
0
2
Sep 8, 2012
#6
  • Sep 8, 2012
  • #6
Thanks for the info..
 
You must log in or register to reply here.

Similar threads

SURGING IDLE / NO IDLE CHECKLIST FOR 1996–1998 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
716
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
SURGING IDLE / NO IDLE CHECKLIST FOR 1999–2004 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
872
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
Engine Throwing codes 94, 33, 34, 44, and sporadic engine shutoff.
  • Ryu
  • Oct 9, 2024
  • Fox 5.0 Mustang Tech
Replies
11
Views
957
Fox 5.0 Mustang Tech Oct 16, 2024
89ripper
C
Engine 1989 Fox Gt - C&L 24lb Sample tube causing sporadic idle?
  • cab8183
  • Aug 4, 2018
  • Fox 5.0 Mustang Tech
Replies
11
Views
3K
Fox 5.0 Mustang Tech Aug 5, 2018
Blown88GT
P
Engine Mustang 1995 GT - RPM fluctuating while driving and surging
  • Paulo Fli
  • Nov 7, 2019
  • 1994 - 1995 Specific Tech
  • 2
Replies
20
Views
8K
1994 - 1995 Specific Tech Jan 8, 2020
trebor3170
T
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?