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High speed hesitation

Started by Twintrbskies, June 01, 2018, 02:50:47 AM

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Twintrbskies

June 01, 2018, 02:50:47 AM
Anyone ever had their SHO "fall on its face" when doing 80-100 under heavy throttle? As I was getting into it, then it almost felt like the power cut completely for a second, then got back on it and cut again. There was some slight hesitation prior to that so I thought it was plugs but the more I read steers me to think PCM.

After a minute it drove fine. Had a few moments where I nailed it and she drove like a champ. Did the same 80-100 again and nothing but smooth sailing. Any ideas?
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2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)

StealBlueSho

#1
June 01, 2018, 06:11:40 AM
Tuned?


Sent from my iPhone using Tapatalk

ZSHO

#2
June 01, 2018, 07:03:13 AM Last Edit: June 01, 2018, 07:05:11 AM by ZSHO
Check for any codes set!  I'm hoping its something simple as a loose waste-gate hose loose!  Z


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

Twintrbskies

#3
June 01, 2018, 08:34:47 AM
Quote from: StealBlueSho on June 01, 2018, 06:11:40 AM
Tuned?

Yessir. LMS 4X

Quote from: ZSHO on June 01, 2018, 07:03:13 AM
Check for any codes set!  I'm hoping its something simple as a loose waste-gate hose loose!  Z

No codes, and only did it that one time. Felt like when traction control cuts on at low speed. Tks Z, Ill check that here soon!
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2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)

Livernois Motorsports

#4
June 01, 2018, 09:54:12 AM
Quote from: Twintrbskies on June 01, 2018, 08:34:47 AM
Quote from: StealBlueSho on June 01, 2018, 06:11:40 AM
Tuned?

Yessir. LMS 4X
What year is your SHO maybe we can offer some assistance in this
Quote from: ZSHO on June 01, 2018, 07:03:13 AM
Check for any codes set!  I'm hoping its something simple as a loose waste-gate hose loose!  Z

No codes, and only did it that one time. Felt like when traction control cuts on at low speed. Tks Z, Ill check that here soon!

Twintrbskies

#5
June 01, 2018, 10:47:41 AM
2010

Would definitely appreciate it.

______________________________________________________________________________________________________


2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)

Livernois Motorsports

#6
June 01, 2018, 11:44:26 AM
Quote from: Twintrbskies on June 01, 2018, 10:47:41 AM
2010

Would definitely appreciate it.


Shoot us a PM with your first and last name, phone number, and also the serial number on your device

Vortech347

#7
June 03, 2018, 12:57:05 AM
Does it feel like 3rd gear is just pulling forever and it's accelerating so slowly you don't even think it's gonna shift?  Mine occasionally does this.  Usually when it's above 90* outside.
Matt H.
2013 SHO Performance Pack, Daily, AJPTurbo tuned
2003 SVT Cobra 497rwhp/491rwtq, Self tuned, Cruiser
1990 Mustang GT 570rwhp/530twtq, Self tuned, Open Track
2017 F150 XLT 5.0

Twintrbskies

#8
June 03, 2018, 02:37:52 AM
Nah mine was like an abrupt cut in power. She downshifted and started to go, then suddenly cut power and came back on. Weird
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2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)

SHOdded

#9
June 03, 2018, 06:47:28 AM
Been known to happen if the knock sensor wiring issue kicks in, tho you might notice more of a stutter first.  Worth a check.  Do you monitor your SHO regularly with Torque Pro or similar tool?
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

ZSHO

#10
June 03, 2018, 06:51:38 AM Last Edit: June 03, 2018, 07:26:32 AM by ZSHO
Brakes changed recently!
Speed sensors!!!  Z


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

TASK_FORCE187

#11
June 03, 2018, 08:52:54 AM
I had that happen to me recently. I was pretty shock!

Twintrbskies

#12
June 03, 2018, 03:52:16 PM Last Edit: June 03, 2018, 03:53:52 PM by Twintrbskies
Quote from: SHOdded on June 03, 2018, 06:47:28 AM
Been known to happen if the knock sensor wiring issue kicks in, tho you might notice more of a stutter first.  Worth a check.  Do you monitor your SHO regularly with Torque Pro or similar tool?

Interesting, it did have a slight stutter under medium accelerating about 20 minutes prior. I do monitor using DashCommand but that night i did not. Coming home late from an Astros game so I didn't think about it. Although today I noticed KR was higher than I have ever seen it. 

Quote from: ZSHO on June 03, 2018, 06:51:38 AM
Brakes changed recently!
Speed sensors!!!  Z

And yes I just changed the pads and had the rotors turned.




On both those ideas, how do I check to either rule them out or correct the issue?
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2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)

StealBlueSho

#13
June 03, 2018, 03:53:44 PM
What kind of KR are you seeing?


Sent from my iPhone using Tapatalk

Twintrbskies

#14
June 03, 2018, 03:54:56 PM
It hit 5.5-6.0 today while in 6th gear cruising about 60 mph. Eased into the gas and watched the needle climb then let out of it.
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2010 SHO non-PP, pearl white, Alky Controls Methanol kit-100% meth, tuned with Ortiz Performance, XDI-35, DW300C LPFP, E85, 3-Bar, K&N Drop-In, 160 T-stat, JLT Catch can, Stainless works Catless downpipes, Rear muffler delete with Borla Tips. (not currently using the methanol)
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