Why Does My Car Not Idle Higher When Cold?

5point0stang88

Active Member

Sep 9, 2011

205

15

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Nov 24, 2014

#1

• Nov 24, 2014

• #1

Car immediately dies, have to give it gas for a few seconds, idle really low like 500 RPM.

I have issue bypass, egr made to stay open, idle at 750 when warm mostly. Stalls in shift, and at stop.

Replaced act, and ect sensors. Fill mod list below.

_____________

Crane Cams 1.72 roller rockers
Gt40p heads
Tfs1 cam
Hardened longer length pushrods
Crane beehive springs
Gt40 intake
Mac 1-5/8 long tubes
Mac Prochamber
Spintech Super Pro Streets Race exhaust dumped
Energy suspension tranny and engine mounts
ARP block to mount bolts
Comp cam double chain roller and sprocket
ARP head bolt and stud
Flowkooler water pump and ARP bolts
Ford racing gasket kit
MSD 90 degree spark cable kit J&M upper and lower control arms
Underdrive pulley kit
Bypass smog
Ford idle air bypass plate
Electric fan
3 row all aluminum radiator
Ron Francis fan controller
Sunpro 5in tach w/ shift light
Hotchkis CC plates
BBK Powerplus 70 mm throttle body and egr spacer
70 mm MAF conversion
130 amp alternator
PA Performance alternator wiring
New clutch
New oil pump and shaft
Rebuilt t5
Weld in sub frame connectors
160 degree thermostat
3:73 greats not installed

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Admin Dude

Jan 4, 1985

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Nov 24, 2014

#2

• Nov 24, 2014

• #2

What codes are you getting?

 

5point0stang88

Active Member

Sep 9, 2011

205

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Nov 24, 2014

#3

• Nov 24, 2014

• #3

Noobz347 said:

What codes are you getting?

Click to expand...

3 4
6 7
8 1
8 2
9 5
Koeo codes

4 1
9 1
3 4
9 cyl bal
Running codes

 

mikestang63

SN Certified Technician

Aug 27, 2012

11,606

8,859

214

In the garage

Nov 25, 2014

#4

• Nov 25, 2014

• #4

@jrichker

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,216

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Massachusetts

Nov 25, 2014

#5

• Nov 25, 2014

• #5

You have the EGR permanently open? Why?

Also, you should be able to ditch the idle bypass plate.

Code 95 is related to the MAF conversion. Looks like the wire that taps into the fuel pump relay was not run. That leads me to ask, did you install the wires to tap into the VSS? That could be part of the stalling issue.

COde 67....make sure you hold the clutch down completely though the entire test

Code 34 is a dead EGR

COde 41 and 91 are lean codes in both cylinders. If you have the EGR stuck open, this would be the cause. you need the EGR to be CLOSED.

Fix the code 41/91 , close the EGR and remove the idle plate. Perform the proper idle reset procedure and set base idle and the car should run much better.

 

Reactions: jrichker

5point0stang88

Active Member

Sep 9, 2011

205

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Nov 25, 2014

#6

• Nov 25, 2014

• #6

I didn't do the conversion myself, previous owner did. How can I check?
I plan to close the egr tomorrow. It was open cause it causes me to stall when idle fluctuate. It yo yos killing the air source causing me to stall

 

5point0stang88

Active Member

Sep 9, 2011

205

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Nov 25, 2014

#7

• Nov 25, 2014

• #7

Mustang5L5 said:

You have the EGR permanently open? Why?

Also, you should be able to ditch the idle bypass plate.

Code 95 is related to the MAF conversion. Looks like the wire that taps into the fuel pump relay was not run. That leads me to ask, did you install the wires to tap into the VSS? That could be part of the stalling issue.

COde 67....make sure you hold the clutch down completely though the entire test

Code 34 is a dead EGR

COde 41 and 91 are lean codes in both cylinders. If you have the EGR stuck open, this would be the cause. you need the EGR to be CLOSED.

Fix the code 41/91 , close the EGR and remove the idle plate. Perform the proper idle reset procedure and set base idle and the car should run much better.

Click to expand...

I'll do keo with jumper on clutch switch like I did running codes

 

5point0stang88

Active Member

Sep 9, 2011

205

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Dec 6, 2014

#8

• Dec 6, 2014

• #8

Problem solved by rebuilding 3 burned spark wires (burned off the headers)
And changed fuel filter (clogged)
**And allowing the right amount of air in the throttle body via the IAB bypass plate. I was currently choking it unknowingly compensating for the issues above throwing off the tune.
Now runs powerful, unrestricted, doesn't stall immediately after start up.


Clogged Fuel pump prime: View: http://youtu.be/wpCalTPi5dU



Fuel filter changed: View: http://youtu.be/sxtxB_JiJCc

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Admin Dude

Jan 4, 1985

42,957

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Dec 6, 2014

#9

• Dec 6, 2014

• #9

Damn... No video of it starting and running after repair?

 

5point0stang88

Active Member

Sep 9, 2011

205

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Dec 6, 2014

#10

• Dec 6, 2014

• #10

Oh man hehe that's tomorrow!

 

5point0stang88

Active Member

Sep 9, 2011

205

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Dec 7, 2014

#11

• Dec 7, 2014

• #11

Made a driving sound video and you can tell it's running nice now. If you have speakers that reproduce bass you'll get idea how deep the sound is.

Mustang 5.0 Sound. Spintech, Mac prochamber, Mac Longtubes: View: http://youtu.be/nd6DCRIj0Ug


@Noobz347

 

Reactions: FoxMustangLvr

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Admin Dude

Jan 4, 1985

42,957

21,132

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Box behind Walmart

Dec 9, 2014

#12

• Dec 9, 2014

• #12

Sounds good man. Good to see you got her all ironed out.

 

Reactions: 5point0stang88