so my savings will now go to fixing my car... have a feeling its the iacv/sensor or FPR. - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
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Old 08-26-2014, 01:38 AM   #1
nboyles85737
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so my savings will now go to fixing my car... have a feeling its the iacv/sensor or FPR.

Car only starts if i hold the gas pedal down and it doesnt matter if its cold or hot. if it was off overnight or just for a second it requires me to hold the gas pedal down to get the thing started. when it is running it runs rich, you can smell it just a little, and i just got a cel for the system being too rich. also crappy mpgs...

the other cel's is for a cylinder 2 misfire and evap emissions control. gross air flow.

i have a feeling the misfire is because the spark plugs are fouled and the emissions one is because the car is rich AF and is spitting unburned fuel into the air. this is just speculation.

now i have it narrowed down to the IACV or FPR because i tested for air leaks using starting fluid and sprayed just after the MAF and all around the TB. no rise in rpm at all.

i dont think its the fuel pump because its too rich and if it was i would have shitty acceleration all the time. but i don't, only when the car starts and it only seems to run a little rich. so i assume its only the FPR...? if its a fuel problem...

now i am leaning against the IACV because i THINK i unplugged it while running and the car dropped rpm and wanted to die. plugged back in and rpms were dandy. now ill describe what i unplugged to make sure it was the IACV. between the firewall and intake mani just below the TB there is a little plug with two tabs on them. press those and pull and it comes out and sucks a bunch of air in.

im sorry if i seem cranky, just mad that this started happening....


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Old 08-26-2014, 01:42 AM   #2
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Forget IAC, FPR is where I'd guess first.

Pull it's vacuum hose to look for fuel there.

(Hose connection pulled off wouldn't be IAC BTW)

EVAP would be next to start checking out.

(Moved to general Tech Chat for more looks)
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Old 08-26-2014, 01:45 AM   #3
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silver thing pull one end off and if fuel leaks out that's it? anything special about pulling out or putting back in?

and i did pull the IACV right? and according to what happened its fine?
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Old 08-26-2014, 01:48 AM   #4
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Yeah, thing on fuel rail. Should have elec. connector & vacuum hose.

Doesn't sound like you pulled IAC, sounds like a vacuum hose connection.
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Old 08-26-2014, 01:50 AM   #5
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fuel rail?? i didnt see any obvious FPR.... might it be the saucer thingy in the top right of this pic? http://i.ytimg.com/vi/v8fZBc3Vqm0/0.jpg
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Old 08-26-2014, 02:26 AM   #6
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So I pulled a hose, pretty sure just a normal fuel line, off of the fuel rail. Assuming fuel rain is the long silver thing just above the intake mani. It had a C shaped thing that you pressed together and it popped right out. 1-3 drops came out while the car was off. Couldn't tell how many since it happened faster than I had expected.

Did I pull the right hose?
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Old 08-26-2014, 02:38 AM   #7
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I've been looking for zetec pictures/listings for the pressure sensor. It's right in the center of the rail on the duratecs, easy to find. It's there somewhere, PCM needs to know the pressure to regulate it!

Found a picture of the location, it's at the timing belt end of the fuel rail.

Has to have wires attached, can't prove from the pics if there is a vacuum line to it (one looks like it, another pic doesn't).
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Old 08-26-2014, 03:30 AM   #8
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Anything that looks like this at that end of the rail?

http://www.autozone.com/autozone/par...7956_682215_0_

AZ describes it as a fuel tank pressure sensor, but the appearance looks right from one picture I saw.
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Old 08-26-2014, 03:57 AM   #9
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Yeah, looks like the catalog wins the day once again, that part is NOT the tank sensor which simply screws in place by hand. That looks like the rail sensor, or the part shown here.........

http://www.justanswer.com/ford/6eb1k...ec-engine.html

The item in the line art pic marked #1. Yours may be different shape but that is it at the end of the rail. More than one type used, you'll want a match for yours if you can get it. I found one like in sailor's link and another smaller box-shaped one, they may interchange. If you have vacuum hose on yours the replacement must as well.

Like he said, not the IAC, which is under the top of the intake and why you ain't finding it. Problem could be a leaking injector too.
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Old 08-26-2014, 04:02 AM   #10
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Quote:
Originally Posted by amc49 View Post
the part shown here.........

Where?


Okay I see, you posted a link after.
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