Idle problem after adjusting fuel pressure

willys1

Active Member

Dec 2, 2003

1,004

1

36

New Jersey

Jun 14, 2004

#1

• Jun 14, 2004

• #1

I went to the track last Friday night,and I adjusted the fuel pressure a few times while I was there.Now it idles like it has a cam.( and it doesnt,its a stock motor )Its real lopy. And when I start it in the morning it stalls out until it is warmed up. I could use some suggestions guys,thanks!!

 

ironmedic

New Member

Mar 18, 2003

1,361

0

0

Puyallup, WA

Jun 14, 2004

#2

• Jun 14, 2004

• #2

would u have to re-adjust your timing if you change the fuel pressure?

 

CRASH7772

Member

Apr 27, 2003

401

1

16

NH

Jun 14, 2004

#3

• Jun 14, 2004

• #3

What is your fuel pressure set at? What mods do you have? How high/low did you adjust your fuel pressure? Maybe you just need to turn you idle up a bit, what's it idle at?

 

ECU5.0

Banned

Jan 10, 2004

1,803

1

0

raleigh, nc

Jun 14, 2004

#4

• Jun 14, 2004

• #4

did you reconnect the vacuum line after you adjusted it? yeah, what did you set it at also

 

willys1

Active Member

Dec 2, 2003

1,004

1

36

New Jersey

Jun 14, 2004

#5

• Jun 14, 2004

• #5

I brought it up to around 45-46 pounds,then back to 39.Timing was only at 12 degrees.It does idle a little low,but when I start it when its cold,it goes up to 1500rpm and goes back down to 0. (stalls) It usaully stops at 1100 rpm,for a minute,then drops to idle.

 

CRASH7772

Member

Apr 27, 2003

401

1

16

NH

Jun 14, 2004

#6

• Jun 14, 2004

• #6

Check your TPS and air bypass valve first. Mabye running that high pressure hurt your cats (if your still running them). Rich running car is the worst things for cats. Do you have a code reader?

 

willys1

Active Member

Dec 2, 2003

1,004

1

36

New Jersey

Jun 14, 2004

#7

• Jun 14, 2004

• #7

Its a stock motor with alot of bolt ons.It ran fine till I f@cked with the pressure!

 

willys1

Active Member

Dec 2, 2003

1,004

1

36

New Jersey

Jun 14, 2004

#8

• Jun 14, 2004

• #8

CRASH7772 said:

Check your TPS and air bypass valve first. Mabye running that high pressure hurt your cats (if your still running them). Rich running car is the worst things for cats. Do you have a code reader?

Click to expand...

I have an off road h-pipe

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

Jun 14, 2004

#9

• Jun 14, 2004

• #9

Dump the codes and see what the computer says is wrong…

Here's the link to dump the computer codes with only a jumper wire or paper clip and the check engine light, or test light or voltmeter. I’ve used it for years, and it works great.

See http://www.troublecodes.net/Ford/
OR
See http://www.dalidesign.com/hbook/eectest.html for more descriptive help
OR
See http://www.mustangworks.com/articles/electronics/eec-iv_codes.html