the idling kinda sucks

1BADSTANG · October 9th, 2007, 09:25 PM

my 1988 mustang gt with a computer from 1989, c&L maf conversion idles like poo until fully warmed up. It will stall at first turn of the key, and i literally have to be gassing it (i keep it at like 1400 rpm) for 20 seconds and then until 3-4 minutes later its barely keeping itself alive. Then it idles fine once it warms up. Can i clean something? Do i have a serious problem? IMO i think for ME its a serious problem, i want to be able to turn that damn key and ITS EFI!!! it should keep itself going! thanks alLl!

1BADSTANG · October 9th, 2007, 10:06 PM

poo

TENGRAM · October 10th, 2007, 12:00 AM

Originally Posted by 1BADSTANG

my 1988 mustang gt with a computer from 1989, c&L maf conversion idles like poo until fully warmed up. It will stall at first turn of the key, and i literally have to be gassing it (i keep it at like 1400 rpm) for 20 seconds and then until 3-4 minutes later its barely keeping itself alive. Then it idles fine once it warms up. Can i clean something? Do i have a serious problem? IMO i think for ME its a serious problem, i want to be able to turn that damn key and ITS EFI!!! it should keep itself going! thanks alLl!

here's what i would do if i were you. i would go back over every detail of the mass air conversion and make sure i did everything right. if the problem persists then i would clean the IAC and make sure it is working properly and i would Check for Codes including the cylinder balance test. then i would post my results on here and see if TENGRAM can help diagnose the problem

good luck

Tony_90fox · October 10th, 2007, 12:06 AM

Originally Posted by TENGRAM

Originally Posted by 1BADSTANG

my 1988 mustang gt with a computer from 1989, c&L maf conversion idles like poo until fully warmed up. It will stall at first turn of the key, and i literally have to be gassing it (i keep it at like 1400 rpm) for 20 seconds and then until 3-4 minutes later its barely keeping itself alive. Then it idles fine once it warms up. Can i clean something? Do i have a serious problem? IMO i think for ME its a serious problem, i want to be able to turn that damn key and ITS EFI!!! it should keep itself going! thanks alLl!

here's what i would do if i were you. i would go back over every detail of the mass air conversion and make sure i did everything right. if the problem persists then i would clean the IAC and make sure it is working properly and i would Check for Codes including the cylinder balance test. then i would post my results on here and see if TENGRAM can help diagnose the problem

good luck

yeah, what he said!

I would personally do the easy stuff first...Clean the IAC, and clean the MAF. If that doesnt solve it, go back through the conversion. lol

331LX89 · October 10th, 2007, 12:14 AM

had similar problems with different cars slim chance but check temperature sensor for computer(two wire sensor) if its unpluged or bad the it will read somewhere around -40 or so below and dump fuel therefore having to gas it,but when it warms up the temperature in the cylinder helps burn off the extra fuel

Iwannagofast · October 10th, 2007, 02:24 AM

its probly not as simple as this but my car was doing about that exact same thing and all my problem was a vacum hose that had broke from dry rot.....i fixed it and it immediately fixed the idleing

ryans88gt · October 10th, 2007, 03:18 PM

What injectors and fuel pressure are you using.

2 things I would try,

1) try rotating the C&L mass air. My car idles best with the MAF at about 2 o'clock, instead of 12 o'clock. By rotating the MAF it picks up a different air signal which can greatly affect the idle quality.

2) try lowering your fuel pressure by 5 PSI if you have an adjustable fuel pressure regulator.

C&Ls are known for poor idle quality, welcome to the club.

Speedstang302 · October 10th, 2007, 04:57 PM

+1

TENGRAM · October 10th, 2007, 06:37 PM

it sounds like he's still got 19 lb injectors and the right C&L for them, so that should not be causing his idle issue. mine idles perfectly and i hve seen many many others with C&Ls have no idles problems.

Speedstang302 · October 10th, 2007, 07:41 PM

yeah alot of people for some reason have problems with there C&L MAF sensors, i have an C&L 76mm MAF and have had no problems with it..

i say maybe the IAC is bad

JBIGBOOTSY · October 10th, 2007, 08:24 PM

Originally Posted by ryans88gt

What injectors and fuel pressure are you using.

2 things I would try,

1) try rotating the C&L mass air. My car idles best with the MAF at about 2 o'clock, instead of 12 o'clock. By rotating the MAF it picks up a different air signal which can greatly affect the idle quality.

2) try lowering your fuel pressure by 5 PSI if you have an adjustable fuel pressure regulator.

C&Ls are known for poor idle quality, welcome to the club.

I was gonna say that someone told me that too, But it was you. Anyway It Idles better with less pressure and clocked at 2:00

ryans88gt · October 11th, 2007, 12:31 PM

Yeah, Rick Anderson is the one that gave me this tip...

he is also the one that told me C&Ls are known for their idle problems

patwrecked · October 11th, 2007, 09:23 PM

check timing]

October 9th, 2007, 09:25 PM	#1
1BADSTANG Hardcore Enthusiast Join Date: Sep 2007 Location: long island Posts: 1,515 iTrader: 0 reviews	the idling kinda sucks my 1988 mustang gt with a computer from 1989, c&L maf conversion idles like poo until fully warmed up. It will stall at first turn of the key, and i literally have to be gassing it (i keep it at like 1400 rpm) for 20 seconds and then until 3-4 minutes later its barely keeping itself alive. Then it idles fine once it warms up. Can i clean something? Do i have a serious problem? IMO i think for ME its a serious problem, i want to be able to turn that damn key and ITS EFI!!! it should keep itself going! thanks alLl!

October 10th, 2007, 12:14 AM	#5
331LX89 Newbie Join Date: Sep 2007 Posts: 13 iTrader: 0 reviews	had similar problems with different cars slim chance but check temperature sensor for computer(two wire sensor) if its unpluged or bad the it will read somewhere around -40 or so below and dump fuel therefore having to gas it,but when it warms up the temperature in the cylinder helps burn off the extra fuel __________________ 89 Mustang LX 331ci 7.88@87.72mph

October 10th, 2007, 03:18 PM	#7
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	What injectors and fuel pressure are you using. 2 things I would try, 1) try rotating the C&L mass air. My car idles best with the MAF at about 2 o'clock, instead of 12 o'clock. By rotating the MAF it picks up a different air signal which can greatly affect the idle quality. 2) try lowering your fuel pressure by 5 PSI if you have an adjustable fuel pressure regulator. C&Ls are known for poor idle quality, welcome to the club. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

October 10th, 2007, 04:57 PM	#8
Speedstang302 I Post Entirely Way Too Much 1996 Mustang GT 13.64@101mph Join Date: Apr 2007 Location: Massachusetss Posts: 5,828 iTrader: 1 reviews	+1 __________________ 1990 GT- GT40p Heads\| Anderson N41 cam\| Crane 1.6 RR's\| Trickflow Intake\|MGW Short Throw\| Aluminum d/s\| 3.73's.....still slow....

October 10th, 2007, 06:37 PM	#9
TENGRAM Hardcore Enthusiast Join Date: Jun 2006 Posts: 1,027 iTrader: 0 reviews	it sounds like he's still got 19 lb injectors and the right C&L for them, so that should not be causing his idle issue. mine idles perfectly and i hve seen many many others with C&Ls have no idles problems. __________________ 89 GT t5 3.73 www.my5oh.com/

the idling kinda sucks

the idling kinda sucks

Re: the idling kinda sucks

Re: the idling kinda sucks

October 9th, 2007, 10:06 PM	#2
1BADSTANG Hardcore Enthusiast Join Date: Sep 2007 Location: long island Posts: 1,515 iTrader: 0 reviews	poo

October 10th, 2007, 07:41 PM	#10
Speedstang302 I Post Entirely Way Too Much 1996 Mustang GT 13.64@101mph Join Date: Apr 2007 Location: Massachusetss Posts: 5,828 iTrader: 1 reviews	yeah alot of people for some reason have problems with there C&L MAF sensors, i have an C&L 76mm MAF and have had no problems with it.. i say maybe the IAC is bad __________________ 1990 GT- GT40p Heads\| Anderson N41 cam\| Crane 1.6 RR's\| Trickflow Intake\|MGW Short Throw\| Aluminum d/s\| 3.73's.....still slow....

October 11th, 2007, 12:31 PM	#12
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	Yeah, Rick Anderson is the one that gave me this tip... he is also the one that told me C&Ls are known for their idle problems __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

October 11th, 2007, 09:23 PM	#13
patwrecked Regular Join Date: Feb 2007 Posts: 339 iTrader: 0 reviews	check timing]

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