This shouldnt happen on an EFI car

Busted07

I need my gorilla to be about an inch longer.

Nov 15, 2005

0

3

0

Aug 6, 2007

#1

• Aug 6, 2007

• #1

I was driving a buddies 93 lx this weekend, and since my car isnt running, im not used to driving a fox. This happened twice... i went to leave an intersection, and stalled it. I tried to crank the car over, and it would crank for days, but not fire up...

The only way i got it to fire was holding the gas pedal to the floor (carb style), turning the key for about 5 seconds, and it would start huffing, i pumped the gas, and the thing fired up.

This happened twice... it shouldnt happen or be possible with an EFI car i thought, but it worked.

Anyone ever have this happen or know what could be causing it?

 

S

stock90GT

New Member

Oct 13, 2006

12

1

0

Aug 6, 2007

#2

• Aug 6, 2007

• #2

it happened to me once or twice on the same day on a car i used to own, did the same thing to me, didn't figure out why though

 

B

Boss 351

Here sthhhhhhhheeeve take a picthh of my man flowe

Jul 13, 2003

2,433

23

48

Canada

Aug 6, 2007

#3

• Aug 6, 2007

• #3

IAC stuck closed?

 

R

rigamaroles

New Member

Jun 27, 2005

0

0

0

British Columbia

Aug 6, 2007

#4

• Aug 6, 2007

• #4

Fuel filter?

 

mustangjoe87

Member

Jul 23, 2004

364

0

16

Harrison Twp., Michigan

Aug 6, 2007

#5

• Aug 6, 2007

• #5

by putting the pedal to the floor you put the computer in flood mode and it clears it out

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,231

17,916

224

Massachusetts

Aug 6, 2007

#6

• Aug 6, 2007

• #6

flooring it turns the injectors off.

You flooded the motor somehow

 

RsStanG1987

I shaved all my pubes playing this game.

10 Year Member

Mar 13, 2004

569

9

79

Dupont PA

Aug 6, 2007

#7

• Aug 6, 2007

• #7

Your fuel pump is o its way out.. My old car did the same ting a couple of times.. Then bam it left me stranded at work..

 

Kumm3

Founding Member

Jul 30, 2002

527

33

69

East Hartford, CT

Aug 6, 2007

#8

• Aug 6, 2007

• #8

If the injectors are too big, it will do the same thing. The computer still has the injectors running at the same duty cycle on startup, think about it, lets just say, they run at 50% on startup, well, 50% of a 19lb/hr injector puts out far less fuel than 50% of, say a 30lb/hr, or 36lbers.

I had this same problem, and it went away when i had an SCT burned for me at the dyno, there is a duty cycle you can change at startup, i think i had mine reduced by 50% over stock, but since the injectors are larger, its putting out the same volume of fuel.

Hope this helps you understand.

 

ryan218

In just 10 years, I'll be old enough to drive!!!!

Dec 28, 2005

0

1

38

columbus ohio

Aug 6, 2007

#9

• Aug 6, 2007

• #9

RsStanG1987 said:

Your fuel pump is o its way out.. My old car did the same ting a couple of times.. Then bam it left me stranded at work..

Click to expand...

thats what i was about to day!

check the fuel pressure at the fuel rail with the key on, then with it running...(if you can get it started)

 

ryan218

In just 10 years, I'll be old enough to drive!!!!

Dec 28, 2005

0

1

38

columbus ohio

Aug 6, 2007

#10

• Aug 6, 2007

• #10

ryan218 said:

thats what i was about to say!

check the fuel pressure at the fuel rail with the key on, then with it running...(if you can get it started)

Click to expand...

 

fiveohwblow

Official Member

15 Year Member

Jul 21, 2005

2,169

145

155

Aug 6, 2007

#11

• Aug 6, 2007

• #11

Kumm3 said:

If the injectors are too big, it will do the same thing. The computer still has the injectors running at the same duty cycle on startup, think about it, lets just say, they run at 50% on startup, well, 50% of a 19lb/hr injector puts out far less fuel than 50% of, say a 30lb/hr, or 36lbers.

I had this same problem, and it went away when i had an SCT burned for me at the dyno, there is a duty cycle you can change at startup, i think i had mine reduced by 50% over stock, but since the injectors are larger, its putting out the same volume of fuel.

Hope this helps you understand.

Click to expand...

I agree with this explanation. This is what I have experienced in the past. No doubt you have flooded the engine, but I am assuming this is why.

BTW, shouldnt this maybe ne in tech?

 

foxmustangman

Member

Jun 20, 2007

196

1

16

Idaho

Aug 6, 2007

#12

• Aug 6, 2007

• #12

Clean the fuel injectors, or better yet, get new ones.

 

Busted07

I need my gorilla to be about an inch longer.

Nov 15, 2005

0

3

0

Aug 9, 2007

#13

• Aug 9, 2007

• #13

I totally forgot i posted this, i havent heard from my buddy since that weekend, as he is military and working 12 hour shifts, but im going to see him this weekend and ask him if he figured it out.. thanks for the responses!