[elfman101]

OK guys I have a 2003 svf with 105k miles. Mods are intake and ORP. Timing belt never changed. So here is the problem. Car will start fine until it warms up then it will start to miss,but not bad. If you drive the car the missing will go away after awhile but come back. Also car will rev to 2-3k on its own until at a complete stop.but it won't rev all the time. No cel or anything. I pulled the codes and got p173 fixed it and it still says I have it. Also got codes p200 p300 and p400. Could this all be from timing belt? I changed plugs and cleaned throttle body really good no help, so I also cleaned maff.

 

[sailor]

Moved to General Tech Chat

 

[elfman101]

Sorry about that thought I had it in the right spot.

 

[NotReal]

I've heard about the dpfe sensor on the egr. Try and get a ford part if possible. Some say maybe the maf.

 

[elfman101]

So you think that sensor could cause all that? And wants does dpfe stand for?

 

[NotReal]

Delta pressure feedback of egr.

 

[elfman101]

Just did some research on it. Sounds like a possibility but idk with my luck. I will give it a try, how much for the sensor?

 

[NotReal]

80$ or so. But like I mentioned. Try to get a ford part first.

 

[shlbygt]

I've heard about the dpfe sensor on the egr. Try and get a ford part if possible. Some say maybe the maf.

No EGR on a SVT.

 

[NotReal]

I spaced on that one. Codes kinda had me. Then I'd check the maf out.

 

[dirtbrown]

check your wires that comes from the harness to the alternator the "pigtail" wires on FJ someone had the same issue and that was it...i think those are misfire codes im not sure..have u tired to pull your - cable off the - terminal and reset the computer?

 

[NotReal]

And do that timing belt ASAP. It won't fix your prob but you also don't want the prob if it fails.

 

[elfman101]

Yeah I did try resetting the battery. Same codes. Also alternator wire do all that?? And I threw a egr code but I dont have a egr? Lol this car has a mind of its own. So check for what bad connection or wire showing? I feel that is not the problem here.

 

[elfman101]

But I will give it a shot. Could it be an bad coil pack? I replaced it with a stock ford one 2 years ago.

 

[NotReal]

Check the wiring going to the coil. Those wires like to become brittle and break.

 

[elfman101]

I checked wires going to the coil pack. I didn't see anything wrong there.could a bad TPS do all this?

 

[Mandroid]

Its possible that a TPS could do that. I also have to agree with notreal on changing your timing belt. You don't want that to break

 

[elfman101]

Yes I plan on changing it. Also I threw a code p200 I just found out it stands for fuel injection malfunction. Would that be an injecter or rail??

 

[sailor]

You can check codes here:http://www.focusfanatics.com/forum/showthread.php?t=59286

I'd want to recheck the codes, and make sure you get the full 4 digit code number.

I see you had a couple more to mention earlier, I need to look at them now as well.

 

[sailor]

Yeah, don't like those code numbers, they're all generic ones not specific & the last (400) is for a system not on the SVT.

200 is an injector code, but it isn't pointing at a specific problem & 300 is the misfire code that would go with that.

Don't want to trust them as the info. is limited & at least some is wrong.