Idle problem after adjusting fuel pressure

[willys1]

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]

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

 

[CRASH7772]

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]

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

 

[willys1]

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]

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]

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

 

[willys1]

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?

I have an off road h-pipe

 

[jrichker]

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